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Thursday, August 1, 2019

Francis Bacon

From Wikipedia, the free encyclopedia


The Viscount St. Alban

Somer Francis Bacon.jpg
Portrait by Pourbus the Younger, 1617

Lord High Chancellor of England
In office
7 March 1617 – 3 May 1621
MonarchJames I
Preceded bySir Thomas Egerton
Succeeded byJohn Williams
Attorney General of England and Wales
In office
26 October 1613 – 7 March 1617
MonarchJames I
Preceded bySir Henry Hobart
Succeeded bySir Henry Yelverton
Personal details
Born22 January 1561
Strand, London, England
Died9 April 1626 (aged 65)
Highgate, Middlesex, England
Buried
MotherLady Anne Bacon
FatherSir Nicholas Bacon
Alma mater
Notable workWorks by Francis Bacon
Signature

Philosophy career

EraRenaissance philosophy
RegionWestern philosophy
SchoolEmpiricism
Main interests

Francis Bacon, 1st Viscount St Alban, PC QC (/ˈbkən/; 22 January 1561 – 9 April 1626) was an English philosopher and statesman who served as Attorney General and as Lord Chancellor of England. His works are credited with developing the scientific method and remained influential through the scientific revolution.

Bacon has been called the father of empiricism. His works argued for the possibility of scientific knowledge based only upon inductive reasoning and careful observation of events in nature. Most importantly, he argued science could be achieved by use of a sceptical and methodical approach whereby scientists aim to avoid misleading themselves. Although his practical ideas about such a method, the Baconian method, did not have a long-lasting influence, the general idea of the importance and possibility of a sceptical methodology makes Bacon the father of the scientific method. This method was a new rhetorical and theoretical framework for science, the practical details of which are still central in debates about science and methodology.

Bacon was a patron of libraries and developed a functional system for the cataloging of books by dividing them into three categories—history, poetry, and philosophy—which could further be divided into more specific subjects and subheadings. Bacon was educated at Trinity College, Cambridge, where he rigorously followed the medieval curriculum, largely in Latin.

Bacon was the first recipient of the Queen's counsel designation, which was conferred in 1597 when Elizabeth I of England reserved Bacon as her legal advisor. After the accession of James VI and I in 1603, Bacon was knighted. He was later created Baron Verulam in 1618 and Viscount St. Alban in 1621.

Because he had no heirs, both titles became extinct upon his death in 1626, at 65 years. Bacon died of pneumonia, with one account by John Aubrey stating that he had contracted the condition while studying the effects of freezing on the preservation of meat. He is buried at St Michael's Church, St Albans, Hertfordshire.

Biography

Early life

The young Francis Bacon. Inscription around his head reads: Si tabula daretur digna animum mallem, Latin for "If one could but paint his mind". National Portrait Gallery, London
 
Francis Bacon was born on 22 January 1561 at York House near the Strand in London, the son of Sir Nicholas Bacon (Lord Keeper of the Great Seal) by his second wife, Anne (Cooke) Bacon, the daughter of the noted humanist Anthony Cooke. His mother's sister was married to William Cecil, 1st Baron Burghley, making Burghley Bacon's uncle.

Biographers believe that Bacon was educated at home in his early years owing to poor health, which would plague him throughout his life. He received tuition from John Walsall, a graduate of Oxford with a strong leaning toward Puritanism. He went up to Trinity College at the University of Cambridge on 5 April 1573 at the age of 12, living for three years there, together with his older brother Anthony Bacon under the personal tutelage of Dr John Whitgift, future Archbishop of Canterbury. Bacon's education was conducted largely in Latin and followed the medieval curriculum. He was also educated at the University of Poitiers. It was also at Cambridge that Bacon first met Queen Elizabeth, who was impressed by his precocious intellect, and was accustomed to calling him "The young lord keeper".

His studies brought him to the belief that the methods and results of science as then practised were erroneous. His reverence for Aristotle conflicted with his rejection of Aristotelian philosophy, which seemed to him barren, disputatious and wrong in its objectives. 

The Italianate York Water Gate – the entry to York House, built about 1626, the year of Bacon's death
 
On 27 June 1576, he and Anthony entered de societate magistrorum at Gray's Inn. A few months later, Francis went abroad with Sir Amias Paulet, the English ambassador at Paris, while Anthony continued his studies at home. The state of government and society in France under Henry III afforded him valuable political instruction. For the next three years he visited Blois, Poitiers, Tours, Italy, and Spain. During his travels, Bacon studied language, statecraft, and civil law while performing routine diplomatic tasks. On at least one occasion he delivered diplomatic letters to England for Walsingham, Burghley, and Leicester, as well as for the queen.

The sudden death of his father in February 1579 prompted Bacon to return to England. Sir Nicholas had laid up a considerable sum of money to purchase an estate for his youngest son, but he died before doing so, and Francis was left with only a fifth of that money. Having borrowed money, Bacon got into debt. To support himself, he took up his residence in law at Gray's Inn in 1579, his income being supplemented by a grant from his mother Lady Anne of the manor of Marks near Romford in Essex, which generated a rent of £46.

Parliamentarian

Francis Bacon's statue at Gray's Inn, South Square, London
 
Bacon stated that he had three goals: to uncover truth, to serve his country, and to serve his church. He sought to further these ends by seeking a prestigious post. In 1580, through his uncle, Lord Burghley, he applied for a post at court that might enable him to pursue a life of learning, but his application failed. For two years he worked quietly at Gray's Inn, until he was admitted as an outer barrister in 1582.

His parliamentary career began when he was elected MP for Bossiney, Cornwall, in a by-election in 1581. In 1584 he took his seat in parliament for Melcombe in Dorset, and in 1586 for Taunton. At this time, he began to write on the condition of parties in the church, as well as on the topic of philosophical reform in the lost tract Temporis Partus Maximus. Yet he failed to gain a position that he thought would lead him to success. He showed signs of sympathy to Puritanism, attending the sermons of the Puritan chaplain of Gray's Inn and accompanying his mother to the Temple Church to hear Walter Travers. This led to the publication of his earliest surviving tract, which criticised the English church's suppression of the Puritan clergy. In the Parliament of 1586, he openly urged execution for the Catholic Mary, Queen of Scots

About this time, he again approached his powerful uncle for help; this move was followed by his rapid progress at the bar. He became a bencher in 1586 and was elected a Reader in 1587, delivering his first set of lectures in Lent the following year. In 1589, he received the valuable appointment of reversion to the Clerkship of the Star Chamber, although he did not formally take office until 1608; the post was worth £1,600 a year.

In 1588 he became MP for Liverpool and then for Middlesex in 1593. He later sat three times for Ipswich (1597, 1601, 1604) and once for Cambridge University (1614).

He became known as a liberal-minded reformer, eager to amend and simplify the law. Though a friend of the crown, he opposed feudal privileges and dictatorial powers. He spoke against religious persecution. He struck at the House of Lords in its usurpation of the Money Bills. He advocated for the union of England and Scotland, which made him a significant influence toward the consolidation of the United Kingdom; and he later would advocate for the integration of Ireland into the Union. Closer constitutional ties, he believed, would bring greater peace and strength to these countries.

Final years of the Queen's reign

Bacon soon became acquainted with Robert Devereux, 2nd Earl of Essex, Queen Elizabeth's favourite. By 1591 he acted as the earl's confidential adviser.

In 1592 he was commissioned to write a tract in response to the Jesuit Robert Parson's anti-government polemic, which he titled Certain observations made upon a libel, identifying England with the ideals of democratic Athens against the belligerence of Spain.

Bacon took his third parliamentary seat for Middlesex when in February 1593 Elizabeth summoned Parliament to investigate a Roman Catholic plot against her. Bacon's opposition to a bill that would levy triple subsidies in half the usual time offended the Queen: opponents accused him of seeking popularity, and for a time the Court excluded him from favour.

Memorial to Francis Bacon, in the chapel of Trinity College, Cambridge
 
When the office of Attorney General fell vacant in 1594, Lord Essex's influence was not enough to secure the position for Bacon and it was given to Sir Edward Coke. Likewise, Bacon failed to secure the lesser office of Solicitor General in 1595, the Queen pointedly snubbing him by appointing Sir Thomas Fleming instead. To console him for these disappointments, Essex presented him with a property at Twickenham, which Bacon subsequently sold for £1,800.

In 1597 Bacon became the first Queen's Counsel designate, when Queen Elizabeth reserved him as her legal counsel. In 1597, he was also given a patent, giving him precedence at the Bar. Despite his designations, he was unable to gain the status and notoriety of others. In a plan to revive his position he unsuccessfully courted the wealthy young widow Lady Elizabeth Hatton. His courtship failed after she broke off their relationship upon accepting marriage to Sir Edward Coke, a further spark of enmity between the men. In 1598 Bacon was arrested for debt. Afterward, however, his standing in the Queen's eyes improved. Gradually, Bacon earned the standing of one of the learned counsels. His relationship with the Queen further improved when he severed ties with Essex—a shrewd move, as Essex would be executed for treason in 1601.

With others, Bacon was appointed to investigate the charges against Essex. A number of Essex's followers confessed that Essex had planned a rebellion against the Queen. Bacon was subsequently a part of the legal team headed by the Attorney General Sir Edward Coke at Essex's treason trial. After the execution, the Queen ordered Bacon to write the official government account of the trial, which was later published as A DECLARATION of the Practices and Treasons attempted and committed by Robert late Earle of Essex and his Complices, against her Majestie and her Kingdoms ... after Bacon's first draft was heavily edited by the Queen and her ministers.

According to his personal secretary and chaplain, William Rawley, as a judge Bacon was always tender-hearted, "looking upon the examples with the eye of severity, but upon the person with the eye of pity and compassion". And also that "he was free from malice", "no revenger of injuries", and "no defamer of any man".

James I comes to the throne

The succession of James I brought Bacon into greater favour. He was knighted in 1603. In another shrewd move, Bacon wrote his Apologies in defence of his proceedings in the case of Essex, as Essex had favoured James to succeed to the throne. 

The following year, during the course of the uneventful first parliament session, Bacon married Alice Barnham. In June 1607 he was at last rewarded with the office of solicitor general. The following year, he began working as the Clerkship of the Star Chamber. Despite a generous income, old debts still could not be paid. He sought further promotion and wealth by supporting King James and his arbitrary policies. 

Portrait of Sir Francis Bacon
Sir Francis Bacon, c. 1618
 
In 1610 the fourth session of James's first parliament met. Despite Bacon's advice to him, James and the Commons found themselves at odds over royal prerogatives and the king's embarrassing extravagance. The House was finally dissolved in February 1611. Throughout this period Bacon managed to stay in the favour of the king while retaining the confidence of the Commons. 

In 1613 Bacon was finally appointed attorney general, after advising the king to shuffle judicial appointments. As attorney general, Bacon, by his zealous efforts—which included torture—to obtain the conviction of Edmund Peacham for treason, raised legal controversies of high constitutional importance; and successfully prosecuted Robert Carr, 1st Earl of Somerset, and his wife, Frances Howard, Countess of Somerset, for murder in 1616. The so-called Prince's Parliament of April 1614 objected to Bacon's presence in the seat for Cambridge and to the various royal plans that Bacon had supported. Although he was allowed to stay, parliament passed a law that forbade the attorney general to sit in parliament. His influence over the king had evidently inspired resentment or apprehension in many of his peers. Bacon, however, continued to receive the King's favour, which led to his appointment in March 1617 as temporary Regent of England (for a period of a month), and in 1618 as Lord Chancellor. On 12 July 1618 the king created Bacon Baron Verulam, of Verulam, in the Peerage of England; he then became known as Francis, Lord Verulam.

Bacon continued to use his influence with the king to mediate between the throne and Parliament, and in this capacity he was further elevated in the same peerage, as Viscount St Alban, on 27 January 1621.

Lord Chancellor and public disgrace

Francis Bacon and the members of the Parliament on the day of his political fall
 
Bacon's public career ended in disgrace in 1621. After he fell into debt, a parliamentary committee on the administration of the law charged him with 23 separate counts of corruption. His lifelong enemy, Sir Edward Coke, who had instigated these accusations, was one of those appointed to prepare the charges against the chancellor. To the lords, who sent a committee to enquire whether a confession was really his, he replied, "My lords, it is my act, my hand, and my heart; I beseech your lordships to be merciful to a broken reed." He was sentenced to a fine of £40,000 and committed to the Tower of London at the king's pleasure; the imprisonment lasted only a few days and the fine was remitted by the king. More seriously, parliament declared Bacon incapable of holding future office or sitting in parliament. He narrowly escaped undergoing degradation, which would have stripped him of his titles of nobility. Subsequently, the disgraced viscount devoted himself to study and writing. 

There seems little doubt that Bacon had accepted gifts from litigants, but this was an accepted custom of the time and not necessarily evidence of deeply corrupt behaviour. While acknowledging that his conduct had been lax, he countered that he had never allowed gifts to influence his judgement and, indeed, he had on occasion given a verdict against those who had paid him. He even had an interview with King James in which he assured:
The law of nature teaches me to speak in my own defence: With respect to this charge of bribery I am as innocent as any man born on St. Innocents Day. I never had a bribe or reward in my eye or thought when pronouncing judgment or order... I am ready to make an oblation of myself to the King
— 17 April 1621
He also wrote the following to Buckingham:
My mind is calm, for my fortune is not my felicity. I know I have clean hands and a clean heart, and I hope a clean house for friends or servants; but Job himself, or whoever was the justest judge, by such hunting for matters against him as hath been used against me, may for a time seem foul, especially in a time when greatness is the mark and accusation is the game.
The true reason for his acknowledgement of guilt is the subject of debate, but some authors speculate that it may have been prompted by his sickness, or by a view that through his fame and the greatness of his office he would be spared harsh punishment. He may even have been blackmailed, with a threat to charge him with sodomy, into confession.

The British jurist Basil Montagu wrote in Bacon's defence, concerning the episode of his public disgrace:
Bacon has been accused of servility, of dissimulation, of various base motives, and their filthy brood of base actions, all unworthy of his high birth, and incompatible with his great wisdom, and the estimation in which he was held by the noblest spirits of the age. It is true that there were men in his own time, and will be men in all times, who are better pleased to count spots in the sun than to rejoice in its glorious brightness. Such men have openly libelled him, like Dewes and Weldon, whose falsehoods were detected as soon as uttered, or have fastened upon certain ceremonious compliments and dedications, the fashion of his day, as a sample of his servility, passing over his noble letters to the Queen, his lofty contempt for the Lord Keeper Puckering, his open dealing with Sir Robert Cecil, and with others, who, powerful when he was nothing, might have blighted his opening fortunes for ever, forgetting his advocacy of the rights of the people in the face of the court, and the true and honest counsels, always given by him, in times of great difficulty, both to Elizabeth and her successor. When was a "base sycophant" loved and honoured by piety such as that of Herbert, Tennison, and Rawley, by noble spirits like Hobbes, Ben Jonson, and Selden, or followed to the grave, and beyond it, with devoted affection such as that of Sir Thomas Meautys.

Personal life

Religious beliefs

Bacon was a devout Anglican. He believed that philosophy and the natural world must be studied inductively, but argued that we can only study arguments for the existence of God. Information on his attributes (such as nature, action, and purposes) can only come from special revelation. But Bacon also held that knowledge was cumulative, that study encompassed more than a simple preservation of the past. "Knowledge is the rich storehouse for the glory of the Creator and the relief of man's estate," he wrote. In his Essays, he affirms that "a little philosophy inclineth man's mind to atheism, but depth in philosophy bringeth men's minds about to religion."

Bacon's idea of idols of the mind may have self-consciously represented an attempt to Christianise science at the same time as developing a new, reliable scientific method; Bacon gave worship of Neptune as an example of the idola tribus fallacy, hinting at the religious dimensions of his critique of the idols.

Marriage to Alice Barnham

When he was 36, Bacon courted Elizabeth Hatton, a young widow of 20. Reportedly, she broke off their relationship upon accepting marriage to a wealthier man, Bacon's rival, Sir Edward Coke. Years later, Bacon still wrote of his regret that the marriage to Hatton had not taken place.

At the age of 45, Bacon married Alice Barnham, the 14-year-old daughter of a well-connected London alderman and MP. Bacon wrote two sonnets proclaiming his love for Alice. The first was written during his courtship and the second on his wedding day, 10 May 1606. When Bacon was appointed lord chancellor, "by special Warrant of the King", Lady Bacon was given precedence over all other Court ladies. Bacon's personal secretary and chaplain, William Rawley, wrote in his biography of Bacon that his marriage was one of "much conjugal love and respect", mentioning a robe of honour that he gave to Alice and which "she wore unto her dying day, being twenty years and more after his death".

Engraving of Alice Barnham
 
However, an increasing number of reports circulated about friction in the marriage, with speculation that this may have been due to Alice's making do with less money than she had once been accustomed to. It was said that she was strongly interested in fame and fortune, and when household finances dwindled, she complained bitterly. Bunten wrote in her Life of Alice Barnham that, upon their descent into debt, she went on trips to ask for financial favours and assistance from their circle of friends. Bacon disinherited her upon discovering her secret romantic relationship with Sir John Underhill. He subsequently rewrote his will, which had previously been very generous—leaving her lands, goods, and income—and instead revoked it all.

Sexuality

Several authors believe that despite his marriage Bacon was primarily attracted to the same sex. Forker, for example, has explored the "historically documentable sexual preferences" of both Francis Bacon and King James I and concluded they were both orientated to "masculine love", a contemporary term that "seems to have been used exclusively to refer to the sexual preference of men for members of their own gender."

The well-connected antiquary John Aubrey noted in his Brief Lives concerning Bacon, "He was a Pederast. His Ganimeds and Favourites tooke Bribes". ("pederast" in Renaissance diction meant generally "homosexual" rather than specifically a lover of minors; "ganimed" derives from the mythical prince abducted by Zeus to be his cup-bearer and bed warmer.)  

The Jacobean antiquarian, Sir Simonds D'Ewes (Bacon's fellow Member of Parliament) implied there had been a question of bringing him to trial for buggery, which his brother Anthony Bacon had also been charged with.

In his Autobiography and Correspondence, D'Ewes discusses Bacon's love for his Welsh serving-men, in particular a "very effeminate-faced youth" whom he calls "his catamite and bedfellow" ("catamite" is a corruption of "Ganymede"). The diary entry for 3 May 1621—the date of Bacon's censure by Parliament—reveals the full extent of Bacon's homosexuality. 

This conclusion has been disputed by others, who point to lack of consistent evidence, and consider the sources to be more open to interpretation. Publicly, at least, Bacon distanced himself from the idea of homosexuality. In his New Atlantis, he described his utopian island as being "the chastest nation under heaven", and "as for masculine love, they have no touch of it".

Death

Monument to Bacon at his burial place, St Michael's Church in St Albans
 
On 9 April 1626, Francis Bacon died of pneumonia while at Arundel mansion at Highgate outside London. An influential account of the circumstances of his death was given by John Aubrey's Brief Lives. Aubrey's vivid account, which portrays Bacon as a martyr to experimental scientific method, had him journeying to Highgate through the snow with the King's physician when he is suddenly inspired by the possibility of using the snow to preserve meat:
They were resolved they would try the experiment presently. They alighted out of the coach and went into a poor woman's house at the bottom of Highgate hill, and bought a fowl, and made the woman exenterate it.
After stuffing the fowl with snow, Bacon contracted a fatal case of pneumonia. Some people, including Aubrey, consider these two contiguous, possibly coincidental events as related and causative of his death:
The Snow so chilled him that he immediately fell so extremely ill, that he could not return to his Lodging … but went to the Earle of Arundel's house at Highgate, where they put him into … a damp bed that had not been layn-in … which gave him such a cold that in 2 or 3 days as I remember Mr Hobbes told me, he died of Suffocation.
Aubrey has been criticised for his evident credulousness in this and other works; on the other hand, he knew Thomas Hobbes, Bacon's fellow-philosopher and friend. Being unwittingly on his deathbed, the philosopher dictated his last letter to his absent host and friend Lord Arundel:
My very good Lord,—I was likely to have had the fortune of Caius Plinius the elder, who lost his life by trying an experiment about the burning of Mount Vesuvius; for I was also desirous to try an experiment or two touching the conservation and induration of bodies. As for the experiment itself, it succeeded excellently well; but in the journey between London and Highgate, I was taken with such a fit of casting as I know not whether it were the Stone, or some surfeit or cold, or indeed a touch of them all three. But when I came to your Lordship's House, I was not able to go back, and therefore was forced to take up my lodging here, where your housekeeper is very careful and diligent about me, which I assure myself your Lordship will not only pardon towards him, but think the better of him for it. For indeed your Lordship's House was happy to me, and I kiss your noble hands for the welcome which I am sure you give me to it. I know how unfit it is for me to write with any other hand than mine own, but by my troth my fingers are so disjointed with sickness that I cannot steadily hold a pen.
Another account appears in a biography by William Rawley, Bacon's personal secretary and chaplain:
He died on the ninth day of April in the year 1626, in the early morning of the day then celebrated for our Saviour's resurrection, in the sixty-sixth year of his age, at the Earl of Arundel's house in Highgate, near London, to which place he casually repaired about a week before; God so ordaining that he should die there of a gentle fever, accidentally accompanied with a great cold, whereby the defluxion of rheum fell so plentifully upon his breast, that he died by suffocation.
He was buried in St Michael's church in St Albans. At the news of his death, over 30 great minds collected together their eulogies of him, which were then later published in Latin. He left personal assets of about £7,000 and lands that realised £6,000 when sold. His debts amounted to more than £23,000, equivalent to more than £3m at current value.

Philosophy and works

Bacon, Sylva sylvarum
 
Francis Bacon's philosophy is displayed in the vast and varied writings he left, which might be divided into three great branches:
  • Scientific works – in which his ideas for a universal reform of knowledge into scientific methodology and the improvement of mankind's state using the Scientific method are presented.
  • Religious and literary works – in which he presents his moral philosophy and theological meditations.
  • Juridical works – in which his reforms in English Law are proposed.

Influence

Frontispiece to 'The History of Royal-Society of London', picturing Bacon (in the right) among the founding influences of the Society. National Portrait Gallery, London

Science

Bacon's seminal work Novum Organum was influential in the 1630s and 1650s among scholars, in particular Sir Thomas Browne, who in his encyclopedia Pseudodoxia Epidemica (1646–72) frequently adheres to a Baconian approach to his scientific enquiries. This book entails the basis of the Scientific Method as a means of observation and induction. During the Restoration, Bacon was commonly invoked as a guiding spirit of the Royal Society founded under Charles II in 1660. During the 18th-century French Enlightenment, Bacon's non-metaphysical approach to science became more influential than the dualism of his French contemporary Descartes, and was associated with criticism of the ancien regime. In 1733 Voltaire introduced him to a French audience as the "father" of the scientific method, an understanding which had become widespread by the 1750s. In the 19th century his emphasis on induction was revived and developed by William Whewell, among others. He has been reputed as the "Father of Experimental Philosophy".

He also wrote a long treatise on Medicine, History of Life and Death, with natural and experimental observations for the prolongation of life. 

One of his biographers, the historian William Hepworth Dixon, states: "Bacon's influence in the modern world is so great that every man who rides in a train, sends a telegram, follows a steam plough, sits in an easy chair, crosses the channel or the Atlantic, eats a good dinner, enjoys a beautiful garden, or undergoes a painless surgical operation, owes him something."

In 1902 Hugo von Hofmannsthal published a fictional letter, known as The Lord Chandos Letter, addressed to Bacon and dated 1603, about a writer who is experiencing a crisis of language.

North America

A Newfoundland stamp, which reads "Lord Bacon – the guiding spirit in colonization scheme"
 
Bacon played a leading role in establishing the British colonies in North America, especially in Virginia, the Carolinas and Newfoundland in northeastern Canada. His government report on "The Virginia Colony" was submitted in 1609. In 1610 Bacon and his associates received a charter from the king to form the Tresurer and the Companye of Adventurers and planter of the Cittye of London and Bristoll for the Collonye or plantacon in Newfoundland, and sent John Guy to found a colony there. Thomas Jefferson, the third President of the United States, wrote: "Bacon, Locke and Newton. I consider them as the three greatest men that have ever lived, without any exception, and as having laid the foundation of those superstructures which have been raised in the Physical and Moral sciences".

In 1910 Newfoundland issued a postage stamp to commemorate Bacon's role in establishing the colony. The stamp describes Bacon as "the guiding spirit in Colonization Schemes in 1610". Moreover, some scholars believe he was largely responsible for the drafting, in 1609 and 1612, of two charters of government for the Virginia Colony. William Hepworth Dixon considered that Bacon's name could be included in the list of Founders of the United States.

Law

Although few of his proposals for law reform were adopted during his lifetime, Bacon's legal legacy was considered by the magazine New Scientist in 1961 as having influenced the drafting of the Napoleonic Code as well as the law reforms introduced by 19th-century British Prime Minister Sir Robert Peel. The historian William Hepworth Dixon referred to the Napoleonic Code as "the sole embodiment of Bacon's thought", saying that Bacon's legal work "has had more success abroad than it has found at home", and that in France "it has blossomed and come into fruit".

Harvey Wheeler attributed to Bacon, in Francis Bacon's Verulamium—the Common Law Template of The Modern in English Science and Culture, the creation of these distinguishing features of the modern common law system:
  • using cases as repositories of evidence about the "unwritten law";
  • determining the relevance of precedents by exclusionary principles of evidence and logic;
  • treating opposing legal briefs as adversarial hypotheses about the application of the "unwritten law" to a new set of facts.
Statue of Francis Bacon in the Library of Congress, Washington, DC.
 
As late as the 18th century some juries still declared the law rather than the facts, but already before the end of the 17th century Sir Matthew Hale explained modern common law adjudication procedure and acknowledged Bacon as the inventor of the process of discovering unwritten laws from the evidences of their applications. The method combined empiricism and inductivism in a new way that was to imprint its signature on many of the distinctive features of modern English society. Paul H. Kocher writes that Bacon is considered by some jurists to be the father of modern Jurisprudence.

Bacon is commemorated with a statue in Gray's Inn, South Square in London where he received his legal training, and where he was elected Treasurer of the Inn in 1608.

More recent scholarship on Bacon's jurisprudence has focused on his advocating torture as a legal recourse for the crown. Bacon himself was not a stranger to the torture chamber: in his various legal capacities in both Elizabeth I's and James I's reigns, Bacon was listed as a commissioner on five torture warrants. In 1613(?), in a letter addressed to King James I on the question of torture's place within English law, Bacon identifies the scope of torture as a means to further the investigation of threats to the state: "In the cases of treasons, torture is used for discovery, and not for evidence." For Bacon, torture was not a punitive measure, an intended form of state repression, but instead offered a modus operandi for the government agent tasked with uncovering acts of treason.

Organization of knowledge

Francis Bacon developed the idea that a classification of knowledge must be universal while handling all possible resources. In his progressive view, humanity would be better if the access to educational resources were provided to the public, hence the need to organise it. His approach to learning reshaped the Western view of knowledge theory from an individual to a social interest. The original classification proposed by Bacon organised all types of knowledge in three general groups: history, poetry, and philosophy. He did that based on his understanding of how information is processed: memory, imagination, and reason, respectively. His methodical approach to the categorization of knowledge goes hand-in-hand with his principles of scientific methods. Bacon’s writings were the starting point for William Torrey Harris classification system for libraries in the United States by the second half of the 1800s.

Historical debates

Bacon and Shakespeare

The Baconian hypothesis of Shakespearean authorship, first proposed in the mid-19th century, contends that Francis Bacon wrote some or even all of the plays conventionally attributed to William Shakespeare.

Occult theories

Francis Bacon often gathered with the men at Gray's Inn to discuss politics and philosophy, and to try out various theatrical scenes that he admitted writing. Bacon's alleged connection to the Rosicrucians and the Freemasons has been widely discussed by authors and scholars in many books. However, others, including Daphne du Maurier in her biography of Bacon, have argued that there is no substantive evidence to support claims of involvement with the Rosicrucians. Frances Yates does not make the claim that Bacon was a Rosicrucian, but presents evidence that he was nevertheless involved in some of the more closed intellectual movements of his day. She argues that Bacon's movement for the advancement of learning was closely connected with the German Rosicrucian movement, while Bacon's New Atlantis portrays a land ruled by Rosicrucians. He apparently saw his own movement for the advancement of learning to be in conformity with Rosicrucian ideals.

An old volume of Francis Bacon and a rose
 
The link between Bacon's work and the Rosicrucians' ideals which Yates allegedly found was the conformity of the purposes expressed by the Rosicrucian Manifestos and Bacon's plan of a "Great Instauration", for the two were calling for a reformation of both "divine and human understanding", as well as both had in view the purpose of mankind's return to the "state before the Fall".

Another major link is said to be the resemblance between Bacon's New Atlantis and the German Rosicrucian Johann Valentin Andreae's Description of the Republic of Christianopolis (1619). Andreae describes a utopic island in which Christian theosophy and applied science ruled, and in which the spiritual fulfilment and intellectual activity constituted the primary goals of each individual, the scientific pursuits being the highest intellectual calling—linked to the achievement of spiritual perfection. Andreae's island also depicts a great advancement in technology, with many industries separated in different zones which supplied the population's needs—which shows great resemblance to Bacon's scientific methods and purposes.

While rejecting occult conspiracy theories surrounding Bacon and the claim Bacon personally identified as a Rosicrucian, intellectual historian Paolo Rossi has argued for an occult influence on Bacon's scientific and religious writing. He argues that Bacon was familiar with early modern alchemical texts and that Bacon's ideas about the application of science had roots in Renaissance magical ideas about science and magic facilitating humanity's domination of nature. Rossi further interprets Bacon's search for hidden meanings in myth and fables in such texts as The Wisdom of the Ancients as succeeding earlier occultist and Neoplatonic attempts to locate hidden wisdom in pre-Christian myths. As indicated by the title of his study, however, Rossi claims Bacon ultimately rejected the philosophical foundations of occultism as he came to develop a form of modern science.

Rossi's analysis and claims have been extended by Jason Josephson-Storm in his study, The Myth of Disenchantment. Josephson-Storm also rejects conspiracy theories surrounding Bacon and does not make the claim that Bacon was an active Rosicrucian. However, he argues that Bacon's "rejection" of magic actually constituted an attempt to purify magic of Catholic, demonic, and esoteric influences and to establish magic as a field of study and application paralleling Bacon's vision of science. Furthermore, Josephson-Storm argues that Bacon drew on magical ideas when developing his experimental method. Josephson-Storm finds evidence that Bacon considered nature a living entity, populated by spirits, and argues Bacon's views on the human domination and application of nature actually depend on his spiritualism and personification of nature.

The Rosicrucian organisation AMORC claims that Bacon was the "Imperator" (leader) of the Rosicrucian Order in both England and the European continent, and would have directed it during his lifetime.

Bacon's influence can also be seen on a variety of religious and spiritual authors, and on groups that have utilised his writings in their own belief systems.

Bibliography

Some of the more notable works by Bacon are:
  • Essays (1st edition 1597)
  • The Advancement and Proficience of Learning Divine and Human (1605)
  • Essays (2nd edition – 38 essays, 1612)
  • Instauratio magna (The Great Instauration) (1620): a multi-part work including Distributio operis (plan of the work); Novum Organum (new engine); Parasceve ad historiam naturalem, (preparatory for natural history) and Catalogus historiarum particularium (catalogue of particular histories) 
  • De augmentis scientiarum (1623) - an enlargement of The Advancement of Learning translated into Latin
  • Essays, or Counsels Civil and Moral (3rd/final edition – 58 essays, 1625)
  • New Atlantis (1626)

Animal husbandry

From Wikipedia, the free encyclopedia
 
Cattle feedlot
Cattle feedlot in Colorado, US
 
Chickens
Raising chickens intensively for meat in a broiler house, US
 
Animal husbandry is the branch of agriculture concerned with animals that are raised for meat, fibre, milk, eggs, or other products. It includes day-to-day care, selective breeding and the raising of livestock

Husbandry has a long history, starting with the Neolithic revolution when animals were first domesticated, from around 13,000 BC onwards, antedating farming of the first crops. By the time of early civilisations such as ancient Egypt, cattle, sheep, goats and pigs were being raised on farms.

Major changes took place in the Columbian Exchange when Old World livestock were brought to the New World, and then in the British Agricultural Revolution of the 18th century, when livestock breeds like the Dishley Longhorn cattle and Lincoln Longwool sheep were rapidly improved by agriculturalists such as Robert Bakewell to yield more meat, milk, and wool

A wide range of other species such as horse, water buffalo, llama, rabbit and guinea pig are used as livestock in some parts of the world. Insect farming, as well as aquaculture of fish, molluscs, and crustaceans, is widespread. 

Modern animal husbandry relies on production systems adapted to the type of land available. Subsistence farming is being superseded by intensive animal farming in the more developed parts of the world, where for example beef cattle are kept in high density feedlots, and thousands of chickens may be raised in broiler houses or batteries. On poorer soil such as in uplands, animals are often kept more extensively, and may be allowed to roam widely, foraging for themselves. 

Most livestock are herbivores, except for pigs and chickens which are omnivores. Ruminants like cattle and sheep are adapted to feed on grass; they can forage outdoors, or may be fed entirely or in part on rations richer in energy and protein, such as pelleted cereals. Pigs and poultry cannot digest the cellulose in forage, and require cereals and other high-energy foods.

Etymology

The verb to husband, meaning "to manage carefully," derives from an older meaning of husband, which in the 14th century referred to the ownership and care of a household or farm, but today means the "control or judicious use of resources," and in agriculture, the cultivation of plants or animals. Farmers and ranchers who raise livestock are considered to practice animal husbandry; in modern times, large agricultural companies relying on mass production and advanced technology have largely superseded individual farmers as the chief food-animal producers in developed countries.

History

Birth of husbandry

Fat-tailed sheep in Afghanistan
The domestication of ruminants, like these fat-tailed sheep in Afghanistan, provided nomads across the Middle East and central Asia with a reliable source of food.
 
The domestication of livestock was driven by the need to have food on hand when hunting was unproductive. The desirable characteristics of a domestic animal are that it should be useful to the domesticator, should be able to thrive in his or her company, should breed freely, and be easy to tend.

Domestication was not a single event, but a process repeated at various periods in different places. Sheep and goats were the animals that accompanied the nomads in the Middle East, while cattle and pigs were associated with more settled communities.

The first wild animal to be domesticated was the dog. Half-wild dogs, perhaps starting with young individuals, may have been tolerated as scavengers and killers of vermin, and being naturally pack hunters, were predisposed to become part of the human pack and join in the hunt. Prey animals, sheep, goats, pigs and cattle, were progressively domesticated early in the history of agriculture.

Pigs were domesticated in Mesopotamia around 13,000 BC, and sheep followed, some time between 11,000 and 9,000 BC. Cattle were domesticated from the wild aurochs in the areas of modern Turkey and Pakistan around 8,500 BC.

A cow was a great advantage to a villager as she produced more milk than her calf needed, and her strength could be put to use as a working animal, pulling a plough to increase production of crops, and drawing a sledge, and later a cart, to bring the produce home from the field. Draught animals were first used about 4,000 BC in the Middle East, increasing agricultural production immeasurably. In southern Asia, the elephant was domesticated by 6,000 BC.

Fossilised chicken bones dated to 5040 BC have been found in northeastern China, far from where their wild ancestors lived in the jungles of tropical Asia, but archaeologists believe that the original purpose of domestication was for the sport of cockfighting.

Meanwhile, in South America, the llama and the alpaca had been domesticated, probably before 3,000 BC, as beasts of burden and for their wool. Neither was strong enough to pull a plough which limited the development of agriculture in the New World.

Horses occur naturally on the steppes of Central Asia, and their domestication, around 3,000 BC in the Black Sea and Caspian Sea region, was originally as a source of meat; use as pack animals and for riding followed. Around the same time, the wild ass was being tamed in Egypt. Camels were domesticated soon after this, with the Bactrian camel in Mongolia and the Arabian camel becoming beasts of burden. By 1000 BC, caravans of Arabian camels were linking India with Mesopotamia and the Mediterranean.

Ancient civilisations

Egyptian hieroglyphic of cattle
Milking cattle in ancient Egypt
 
In ancient Egypt, cattle were the most important livestock, and sheep, goats, and pigs were also kept; poultry including ducks, geese, and pigeons were captured in nets and bred on farms, where they were force-fed with dough to fatten them.

The Nile provided a plentiful source of fish. Honey bees were domesticated from at least the Old Kingdom, providing both honey and wax.

In ancient Rome, all the livestock known in ancient Egypt were available. In addition, rabbits were domesticated for food by the first century BC. To help flush them out from their underground burrows, the polecat was domesticated as the ferret, its use described by Pliny the Elder.

Medieval husbandry

Painting of shepherd with sheep
Shepherd with sheep in woven hurdle pen. Medieval France. 15th century, MS Douce 195
 
In northern Europe, agriculture including animal husbandry went into decline when the Roman empire collapsed. Some aspects such as the herding of animals continued throughout the period. By the 11th century, the economy had recovered and the countryside was again productive.

The Domesday Book recorded every parcel of land and every animal in Britain: "there was not one single hide, nor a yard of land, nay, moreover ... not even an ox, nor a cow, nor a swine was there left, that was not set down in [the king's] writ." For example, the royal manor of Earley in Berkshire, one of thousands of villages recorded in the book, had in 1086 "2 fisheries worth [paying tax of] 7s and 6d [each year] and 20 acres of meadow [for livestock]. Woodland for [feeding] 70 pigs."

The improvements of animal husbandry in the medieval period in Europe went hand in hand with other developments. Improvements to the plough allowed the soil to be tilled to a greater depth. Horses took over from oxen as the main providers of traction, new ideas on crop rotation were developed and the growing of crops for winter fodder gained ground. Peas, beans and vetches became common; they increased soil fertility through nitrogen fixation, allowing more livestock to be kept.

Columbian Exchange

Exploration and colonisation of North and South America resulted in the introduction into Europe of such crops as maize, potatoes, sweet potatoes and manioc, while the principal Old World livestock – cattle, horses, sheep and goats – were introduced into the New World for the first time along with wheat, barley, rice and turnips.

Agricultural Revolution

Lincoln Longwool Sheep
The Lincoln Longwool breed was improved by Robert Bakewell in the 18th century.
 
Selective breeding for desired traits was established as a scientific practice by Robert Bakewell during the British Agricultural Revolution in the 18th century. One of his most important breeding programs was with sheep. Using native stock, he was able to quickly select for large, yet fine-boned sheep, with long, lustrous wool. The Lincoln Longwool was improved by Bakewell and in turn the Lincoln was used to develop the subsequent breed, named the New (or Dishley) Leicester. It was hornless and had a square, meaty body with straight top lines. These sheep were exported widely and have contributed to numerous modern breeds. Under his influence, English farmers began to breed cattle for use primarily as beef. Long-horned heifers were crossed with the Westmoreland bull to create the Dishley Longhorn.

The semi-natural, unfertilised pastures formed by traditional agricultural methods in Europe were managed by grazing and mowing. As the ecological impact of this land management strategy is similar to the impact of such natural disturbances as a wildfire, this agricultural system shares many beneficial characteristics with a natural habitat, including the promotion of biodiversity. This strategy is declining in Europe today due to the intensification of agriculture. The mechanized and chemical methods used are causing biodiversity to decline.

Husbandry

Systems

Herdwick sheep
Herdwick sheep in an extensive hill farming system, Lake District, England
 
Traditionally, animal husbandry was part of the subsistence farmer's way of life, producing not only the food needed by the family but also the fuel, fertiliser, clothing, transport and draught power. Killing the animal for food was a secondary consideration, and wherever possible its products, such as wool, eggs, milk and blood (by the Maasai) were harvested while the animal was still alive. In the traditional system of transhumance, people and livestock moved seasonally between fixed summer and winter pastures; in montane regions the summer pasture was up in the mountains, the winter pasture in the valleys.

Animals can be kept extensively or intensively. Extensive systems involve animals roaming at will, or under the supervision of a herdsman, often for their protection from predators. Ranching in the Western United States involves large herds of cattle grazing widely over public and private lands.

Similar cattle stations are found in South America, Australia and other places with large areas of land and low rainfall. Similar ranching systems have been used for sheep, deer, ostrich, emu, llama and alpaca.

In the uplands of the United Kingdom, sheep are turned out on the fells in spring and graze the abundant mountain grasses untended, being brought to lower altitudes late in the year, with supplementary feeding being provided in winter. In rural locations, pigs and poultry can obtain much of their nutrition from scavenging, and in African communities, hens may live for months without being fed, and still produce one or two eggs a week.

Pigs in a barn
Pigs confined to a barn in an intensive system, Midwestern United States
 
At the other extreme, in the more developed parts of the world, animals are often intensively managed; dairy cows may be kept in zero-grazing conditions with all their forage brought to them; beef cattle may be kept in high density feedlots; pigs may be housed in climate-controlled buildings and never go outdoors; poultry may be reared in barns and kept in cages as laying birds under lighting-controlled conditions. In between these two extremes are semi-intensive, often family-run farms where livestock graze outside for much of the year, silage or hay is made to cover the times of year when the grass stops growing, and fertiliser, feed, and other inputs are brought onto the farm from outside.

Feeding

Cattle around an outdoor feeder
Cattle around an outdoor feeder
 
Animals used as livestock are predominantly herbivorous, the main exception being the pig which is an omnivore. The herbivores can be divided into "concentrate selectors" which selectively feed on seeds, fruits and highly nutritious young foliage, "grazers" which mainly feed on grass, and "intermediate feeders" which choose their diet from the whole range of available plant material. Cattle, sheep, goats, deer and antelopes are ruminants; they digest food in two steps, chewing and swallowing in the normal way, and then regurgitating the semidigested cud to chew it again and thus extract the maximum possible food value. The dietary needs of these animals is mostly met by eating grass. Grasses grow from the base of the leaf-blade, enabling it to thrive even when heavily grazed or cut.

In many climates grass growth is seasonal, for example in the temperate summer or tropical rainy season, so some areas of the crop are set aside to be cut and preserved, either as hay (dried grass), or as silage (fermented grass). Other forage crops are also grown and many of these, as well as crop residues, can be ensiled to fill the gap in the nutritional needs of livestock in the lean season.

Cattle feed pellets
Cattle feed pellets of pressed linseed
 
Extensively reared animals may subsist entirely on forage, but more intensively kept livestock will require energy and protein-rich foods in addition. Energy is mainly derived from cereals and cereal by-products, fats and oils and sugar-rich foods, while protein may come from fish or meat meal, milk products, legumes and other plant foods, often the by-products of vegetable oil extraction. Pigs and poultry are non-ruminants and unable to digest the cellulose in grass and other forages, so they are fed entirely on cereals and other high-energy foodstuffs. The ingredients for the animals' rations can be grown on the farm or can be bought, in the form of pelleted or cubed, compound foodstuffs specially formulated for the different classes of livestock, their growth stages and their specific nutritional requirements. Vitamins and minerals are added to balance the diet. Farmed fish are usually fed pelleted food.

Breeding

The breeding of farm animals seldom occurs spontaneously but is managed by farmers with a view to encouraging certain traits that are seen as desirable. These include hardiness, prolificness, mothering abilities, fast growth rates, low feed consumption per unit of growth, better body proportions, higher yields, better fibre qualities and other characteristics. Undesirable traits such as health defects, aggressiveness or lack of docility are selected against.

Selective breeding has been responsible for some large increases in productivity. In 2007, a typical broiler chicken at eight weeks old was 4.8 times as heavy as a bird of similar age in 1957. In the thirty years to 2007, the average milk yield of a dairy cow in the United States nearly doubled.

Animal health

Vaccination of a goat
Good husbandry, proper feeding, and hygiene are the main contributors to animal health on the farm, bringing economic benefits through maximised production. When, despite these precautions, animals still become sick, they are treated with veterinary medicines, by the farmer and the veterinarian. In the European Union, when farmers treat their own animals, they are required to follow the guidelines for treatment and to record the treatments given. Animals are susceptible to a number of diseases and conditions that may affect their health. Some, like classical swine fever and scrapie are specific to one type of stock, while others, like foot-and-mouth disease affect all cloven-hoofed animals.

Where the condition is serious, governments impose regulations on import and export, on the movement of stock, quarantine restrictions and the reporting of suspected cases. Vaccines are available against certain diseases, and antibiotics are widely used where appropriate. At one time, antibiotics were routinely added to certain compound foodstuffs to promote growth, but this practice is now frowned on in many countries because of the risk that it may lead to antibiotic resistance.

Animals living under intensive conditions are particularly prone to internal and external parasites; increasing numbers of sea lice are affecting farmed salmon in Scotland. Reducing the parasite burdens of livestock results in increased productivity and profitability.

Watercolor drawing of farmyard with cow, horse, pigs, and chickens
Familiar livestock: ink and watercolour drawing of a farmyard with cow, horse, pigs, and chickens, 1869
 
Governments are particularly concerned with zoonoses, diseases that humans may acquire from animals. Wild animal populations may harbour diseases that can affect domestic animals which may acquire them as a result of insufficient biosecurity. An outbreak of Nipah virus in Malaysia in 1999 was traced back to pigs becoming ill after contact with fruit-eating flying foxes, their faeces and urine. The pigs in turn passed the infection to humans. Avian flu H5N1 is present in wild bird populations and can be carried large distances by migrating birds. This virus is easily transmissible to domestic poultry, and to humans living in close proximity with them. Other infectious diseases affecting wild animals, farm animals and humans include rabies, leptospirosis, brucellosis, tuberculosis and trichinosis.

Range of species

There is no single universally agreed definition of which species are livestock. Widely agreed types of livestock include cattle for beef and dairy, sheep, goats, pigs, and poultry. Various other species are sometimes considered livestock, such as horses, while poultry birds are sometimes excluded. In some parts of the world, livestock includes species such as buffalo, and the South American camelids, the alpaca and llama. Some authorities use much broader definitions to include fish in aquaculture, micro-livestock such as rabbits and rodents like guinea pigs, as well as insects from honey bees to crickets raised for human consumption.

Sheering merino sheep
Shearing a Merino sheep for its wool

Products

Animals are raised for a wide variety of products, principally meat, wool, milk, and eggs, but also including tallow, isinglass and rennet. Animals are also kept for more specialised purposes, such as to produce vaccines and antiserum (containing antibodies) for medical use. Where fodder or other crops are grown alongside animals, manure can serve as a fertiliser, returning minerals and organic matter to the soil in a semi-closed organic system.

Branches

Dairy

Rotary milking parlour
A modern rotary milking parlour, Germany
 
Although all mammals produce milk to nourish their young, the cow is predominantly used throughout the world to produce milk and milk products for human consumption. Other animals used to a lesser extent for this purpose include sheep, goats, camels, buffaloes, yaks, reindeer, horses and donkeys.

All these animals have been domesticated over the centuries, being bred for such desirable characteristics as fecundity, productivity, docility and the ability to thrive under the prevailing conditions. Whereas in the past, cattle had multiple functions, modern dairy cow breeding has resulted in specialised Holstein Friesian-type animals that produce large quantities of milk economically. Artificial insemination is widely available to allow farmers to select for the particular traits that suit their circumstances.

Whereas in the past, cows were kept in small herds on family farms, grazing pastures and being fed hay in winter, nowadays there is a trend towards larger herds, more intensive systems, the feeding of silage and "zero grazing", a system where grass is cut and brought to the cow, which is housed year-round.

In many communities, milk production is only part of the purpose of keeping an animal which may also be used as a beast of burden or to draw a plough, or for the production of fibre, meat and leather, with the dung being used for fuel or for the improvement of soil fertility. Sheep and goats may be favoured for dairy production in climates and conditions that do not suit dairy cows.

Meat

Hereford cow
The Hereford is a hardy breed of beef cattle, now raised in many countries around the world.

Meat, mainly from farmed animals, is a major source of dietary protein around the world, averaging about 8% of man's energy intake. The actual types eaten depend on local preferences, availability, cost and other factors, with cattle, sheep, pigs and goats being the main species involved. Cattle generally produce a single offspring annually which takes more than a year to mature; sheep and goats often have twins and these are ready for slaughter in less than a year; pigs are more prolific, producing more than one litter of up to about 11 piglets each year. Horses, donkeys, deer, buffalo, llamas, alpacas, guanacos and vicunas are farmed for meat in various regions. Some desirable traits of animals raised for meat include fecundity, hardiness, fast growth rate, ease of management and high food conversion efficiency. About half of the world's meat is produced from animals grazing on open ranges or on enclosed pastures, the other half being produced intensively in various factory-farming systems; these are mostly cows, pigs or poultry, and often reared indoors, typically at high densities.

Poultry

Battery hens
Battery hens, Brazil

Poultry, kept for their eggs and for their meat, include chickens, turkeys, geese and ducks. The great majority of laying birds used for egg production are chickens. Methods for keeping layers range from free-range systems, where the birds can roam as they will but are housed at night for their own protection, through semi-intensive systems where they are housed in barns and have perches, litter and some freedom of movement, to intensive systems where they are kept in cages. The battery cages are arranged in long rows in multiple tiers, with external feeders, drinkers, and egg collection facilities. This is the most labour saving and economical method of egg production but has been criticised on animal welfare grounds as the birds are unable to exhibit their normal behaviours.

In the developed world, the majority of the poultry reared for meat is raised indoors in big sheds, with automated equipment under environmentally controlled conditions. Chickens raised in this way are known as broilers, and genetic improvements have meant that they can be grown to slaughter weight within six or seven weeks of hatching. Newly hatched chicks are restricted to a small area and given supplementary heating. Litter on the floor absorbs the droppings and the area occupied is expanded as they grow. Feed and water is supplied automatically and the lighting is controlled. The birds may be harvested on several occasions or the whole shed may be cleared at one time.

A similar rearing system is usually used for turkeys, which are less hardy than chickens, but they take longer to grow and are often moved on to separate fattening units to finish. Ducks are particularly popular in Asia and Australia and can be killed at seven weeks under commercial conditions.

Aquaculture

Freshwater fish farm
Freshwater fish farming, France

Aquaculture has been defined as "the farming of aquatic organisms including fish, molluscs, crustaceans and aquatic plants and implies some form of intervention in the rearing process to enhance production, such as regular stocking, feeding, protection from predators, etc. Farming also implies individual or corporate ownership of the stock being cultivated." In practice it can take place in the sea or in freshwater, and be extensive or intensive. Whole bays, lakes or ponds may be devoted to aquaculture, or the farmed animal may be retained in cages (fish), artificial reefs, racks or strings (shellfish). Fish and prawns can be cultivated in rice paddies, either arriving naturally or being introduced, and both crops can be harvested together.

Fish hatcheries provide larval and juvenile fish, crustaceans and shellfish, for use in aquaculture systems. When large enough these are transferred to growing-on tanks and sold to fish farms to reach harvest size. Some species that are commonly raised in hatcheries include shrimps, prawns, salmon, tilapia, oysters and scallops. Similar facilities can be used to raise species with conservation needs to be released into the wild, or game fish for restocking waterways. Important aspects of husbandry at these early stages include selection of breeding stock, control of water quality and nutrition. In the wild, there is a massive amount of mortality at the nursery stage; farmers seek to minimise this while at the same time maximising growth rates.

Insects

Crickets
Crickets being raised for human consumption, Thailand

Bees have been kept in hives since at least the First Dynasty of Egypt, five thousand years ago, and man had been harvesting honey from the wild long before that. Fixed comb hives are used in many parts of the world and are made from any locally available material. In more advanced economies, where modern strains of domestic bee have been selected for docility and productiveness, various designs of hive are used which enable the combs to be removed for processing and extraction of honey. Quite apart from the honey and wax they produce, honey bees are important pollinators of crops and wild plants, and in many places hives are transported around the countryside to assist in pollination.

Sericulture, the rearing of silkworms, was first adopted by the Chinese during the Shang dynasty. The only species farmed commercially is the domesticated silkmoth. When it spins its cocoon, each larva produces an exceedingly long, slender thread of silk. The larvae feed on mulberry leaves and in Europe, only one generation is normally raised each year as this is a deciduous tree. In China, Korea and Japan however, two generations are normal, and in the tropics, multiple generations are expected. Most production of silk occurs in the Far East, with a synthetic diet being used to rear the silkworms in Japan.

Insects form part of the human diet in many cultures. In Thailand, crickets are farmed for this purpose in the north of the country, and palm weevil larvae in the south. The crickets are kept in pens, boxes or drawers and fed on commercial pelleted poultry food, while the palm weevil larvae live on cabbage palm and sago palm trees, which limits their production to areas where these trees grow. Another delicacy of this region is the bamboo caterpillar, and the best rearing and harvesting techniques in semi-natural habitats are being studied.

Effects

Environmental impact

Cattle
Livestock production requires large areas of land.
 
Animal husbandry has a significant impact on the world environment. It is responsible for somewhere between 20 and 33% of the fresh water usage in the world, and livestock, and the production of feed for them, occupy about a third of the earth's ice-free land. Livestock production is a contributing factor in species extinction, desertification, and habitat destruction. Animal agriculture contributes to species extinction in various ways. Habitat is destroyed by clearing forests and converting land to grow feed crops and for animal grazing, while predators and herbivores are frequently targeted and hunted because of a perceived threat to livestock profits; for example, animal husbandry is responsible for up to 91% of the deforestation in the Amazon region. In addition, livestock produce greenhouse gases. Cows produce some 570 million cubic metres of methane per day, that accounts for from 35 to 40% of the overall methane emissions of the planet. Livestock is responsible for 65% of all human-related emissions of the powerful and long-lived greenhouse gas nitrous oxide. As a result, ways of mitigating animal husbandry's environmental impact are being studied. Strategies include using biogas from manure.

Animal welfare

Since the 18th century, people have become increasingly concerned about the welfare of farm animals. Possible measures of welfare include longevity, behavior, physiology, reproduction, freedom from disease, and freedom from immunosuppression. Standards and laws for animal welfare have been created worldwide, broadly in line with the most widely held position in the western world, a form of utilitarianism: that it is morally acceptable for humans to use non-human animals, provided that no unnecessary suffering is caused, and that the benefits to humans outweigh the costs to the livestock. An opposing view is that animals have rights, should not be regarded as property, and should never be used by humans. Live export of animals has risen to meet increased global demand for livestock such as in the Middle East. Animal rights activists have objected to long-distance transport of animals; one result was the banning of live exports from New Zealand in 2003.

In culture

Cartoon of John Bull giving his breeches to save his bacon
Opening of the budget; – or – John Bull giving his breeches to save his bacon by James Gillray (d. 1815)
 
Since the 18th century, the farmer John Bull has represented English national identity, first in John Arbuthnot's political satires, and soon afterwards in cartoons by James Gillray and others including John Tenniel. He likes food, beer, dogs, horses, and country sports; he is practical and down to earth, and anti-intellectual.

Illustration of dressed pigs
 
Farm animals are widespread in books and songs for children; the reality of animal husbandry is often distorted, softened, or idealized, giving children an almost entirely fictitious account of farm life. The books often depict a rural idyll of happy animals free to roam in attractive countryside, which is completely at odds with the realities of the impersonal, mechanized activities involved in modern intensive farming.

Pigs, for example, appear in several of Beatrix Potter's "little books", as Piglet in A.A. Milne's Winnie the Pooh stories, and somewhat more darkly (with a hint of animals going to slaughter) as Babe in Dick King-Smith's The Sheep-Pig, and as Wilbur in Charlotte's Web. Pigs tend to be "bearers of cheerfulness, good humour and innocence". Many of these books are completely anthropomorphic, dressing farm animals in clothes and having them walk on two legs, live in houses, and perform human activities. The children's song "Old MacDonald Had a Farm" describes a farmer named MacDonald and the various animals he keeps, celebrating the noises they each make.

Many urban children experience animal husbandry for the first time at a petting farm; in Britain, some five million people a year visit a farm of some kind. This presents some risk of infection, especially if children handle animals and then fail to wash their hands; a strain of E. coli infected 93 people who had visited an interactive farm in an outbreak in 2009. Historic farms such as those in the United States offer farmstays and "a carefully curated version of farming to those willing to pay for it", sometimes giving visitors a romanticised image of a pastoral idyll from an unspecified time in the pre-industrial past.

Operator (computer programming)

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