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Cat food is a food for consumption by cats. Cats have requirements for their specific catary nutrients. Certain nutrients, including many vitamins and Amino acids are degraded by the temperatures, pressures and chemical treatments used during manufacture, and hence must be added after manufacture to avoid nutritional deficiency.〔Howell E. ''Food Enzymes for Health & Longevity'' Woodstock Valley, CT, US: Omangod Press. xx. 1980.〕〔() | Perry T. What's really for dinner? The truth about commercial pet food. The Animals' Agenda. 1996. Nov. - Dec.〕 The amino acid taurine, for example, which is found within meat, is degraded during processing, so synthetic taurine is normally added afterwards. Long-term taurine deficiency resulting, for example, from feeding taurine-deficient dog food, may result in retinal degeneration, loss of vision, and cardiac damage. ==History== The idea of preparing specialized food for cats came later than for dogs (see dog biscuits and dog food). This was likely due to the idea that cats could readily fend for themselves. In 1837, a French writer Mauny de Mornay critiqued this idea: In 1844, another French writer expanded on this idea: He goes on to say that it is all the more unreasonable to expect a cat to live from hunting in that cats take mice more for amusement than to eat: "A good cat takes many and eats few". By 1876, Gordon Stables emphasized the need to give cats particular food: In the same year, an advertisement for Spratt (better known for making dog food) said that their cat food entirely superseded "the unwholesome practice of feeding on boiled horse flesh; keeps the cat in perfect health."〔ad for Spratt's http://books.google.com/books?id=5-ANAAAAQAAJ&pg=PP8&dq=cat+food+%22cat+food%22&lr=&as_drrb_is=b&as_minm_is=0&as_miny_is=1850&as_maxm_is=0&as_maxy_is=1880&num=100&as_brr=0&cd=26#v=onepage&q=cat%20food%20%22cat%20food%22&f=false〕 And, in another book on cats, Stables recommended the company's food: Spratt, which began by making dog biscuits, appears to also have been the first commercial producer of cat food. During the 19th century and early 20th centuries, meat for cats and dogs in London, frequently horse meat, was sold from barrows (hand–carts) by itinerant traders known as ''Cats' Meat Men''.〔(【引用サイトリンク】 title=Cats' Meat Man: c.1901 )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cat food」の詳細全文を読む スポンサード リンク
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