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The nutritional quality of feed is influenced not only by the nutrient content, but also by many other factors such as feed presentation, hygiene, digestibility, and effect on intestinal health. [17] Feed additives provide a mechanism through which these nutrient deficiencies can be resolved, improving animal rate of growth, health, and well ...
Most foods contain a mix of some or all of the nutrient classes, together with other substances. Some nutrients can be stored internally (e.g., the fat soluble vitamins), while others are required more or less continuously. Poor health can be caused by a lack of required nutrients or, in extreme cases, too much of a required nutrient.
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]
Cattle feedlot in Colorado, United States. Animal husbandry is the branch of agriculture concerned with animals that are raised for meat, fibre, milk, or other products.It includes day-to-day care, management, production, nutrition, selective breeding, and the raising of livestock.
The cattle industry takes the position that the use of growth hormones allows plentiful meats to be sold for affordable prices. [24] Using hormones in beef cattle costs $1.50 and adds between 40 and 50 lb (18 and 23 kg) to the weight of a steer at slaughter, for a return of at least $25. [25]
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. [1]
Nitrogen fertilizer being applied to growing corn in a contoured, no-tilled field in Iowa.. Nutrient management is the science and practice directed to link soil, crop, weather, and hydrologic factors with cultural, irrigation, and soil and water conservation practices to achieve optimal nutrient use efficiency, crop yields, crop quality, and economic returns, while reducing off-site transport ...
The standard text in the United States, Nutrient Requirements of Beef Cattle, has been through eight editions over at least seventy years. [9] The 1996 seventh edition substituted the concept of metabolizeable protein for the sixth edition's crude protein. [10] [11] In the 20th century, Canadian practice followed the American guidance. [12]