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Residual feed intake (sometimes shortened in literature to RFI) is a resource allocation theory index [clarification needed (what is a "resource allocation theory index"?)] used to calculate the feed efficiency of growing cattle. It was developed by Robert M. Koch in 1963 as an answer to the difficulties of using a feed conversion ratio to ...
Distributing TMR to a group of dairy cows. Total mixed ration (TMR) is a method of feeding beef and dairy cattle. A TMR diet achieves a wide distribution of nutrients in uniform feed rather than switching between several types. A cow's ration should include good quality forages, a balance of grains and proteins, vitamins and minerals.
Feed conversion ratio (FCR) is the ratio of inputs to outputs; it is the inverse of "feed efficiency" which is the ratio of outputs to inputs. [2] FCR is widely used in hog and poultry production, while FE is used more commonly with cattle. [2] Being a ratio the FCR is dimensionless, that is, it is not affected by the units of measurement used ...
Cattle feeding. There are different systems of feeding cattle in animal husbandry. For pastured animals, grass is usually the forage that composes the majority of their diet. In turn, this grass-fed approach is known for producing meat with distinct flavor profiles. Cattle reared in feedlots are fed hay supplemented with grain, soy and other ...
Rumen of a sheep from left. 1 Atrium ruminis, 2 Saccus dorsalis, 3 Saccus ventralis, 4 Recessus ruminis, 5 Saccus cecus caudodorsalis, 6 Saccus cecus caudoventralis, 7 Sulcus cranialis, 8 Sulcus longitudinalis sinister, 9 Sulcus coronarius dorsalis, 10 Sulcus coronarius ventralis, 11 Sulcus caudalis, 12 Sulcus accessorius sinister, 13 Insula ruminis, 14 Sulcus ruminoreticularis, 15 Reticulum ...
Animal feed is food given to domestic animals, especially livestock, in the course of animal husbandry. There are two basic types: fodder and forage. Used alone, the word feed more often refers to fodder. Animal feed is an important input to animal agriculture, and is frequently the main cost of the raising or keeping of animals.
Ractopamine is known to increase the rate of weight gain, improve feed efficiency, and increase carcass leanness in finishing swine. Its use in finishing swine yields about 3 kg (6.6 lb) of additional lean pork per animal, and improves feed efficiency by 10%. [13]
Concentrated animal feeding operation. In animal husbandry, a concentrated animal feeding operation (CAFO), as defined by the United States Department of Agriculture (USDA), is an intensive animal feeding operation (AFO) in which over 1,000 animal units are confined for over 45 days a year. An animal unit is the equivalent of 1,000 pounds of ...