Alpharma Beef Cattle Nutrition symposium: manipulation of nutrient synchrony.
نویسندگان
چکیده
The Alpharma Beef Cattle Nutrition symposium was held at the joint annual meeting of the American Society of Animal Science, the American Dairy Science Association, the Asociación Mexicana de Producción Animal, and the Poultry Science Association in San Antonio, Texas, July 8 to 12, 2007. The purpose of the symposium was to discuss the potential to influence ruminant animal production through nutrient synchrony, to summarize the contribution of N recycling to nutrient synchrony, and to determine opportunities to enhance animal performance and efficiency through nutrient synchrony in both forageand concentratefed ruminants. Nutrient synchrony refers to providing dietary protein and energy sources to the rumen in such a manner that they are available simultaneously in proportions needed by the ruminal microorganisms. The concept is that synchrony between the supply of N and energy to the ruminal microorganisms should improve capture of N, improve efficiency of ATP use for microbial growth, increase nutrient supply to the host animal, and thereby improve animal performance. With traditional feedstuffs being processed to provide substrates for other purposes (e.g., ethanol production), the availability of coproducts will most likely continue to increase. If nutrient synchrony is important, then altered rate and extent of ruminal degradation of key nutrients in coproducts relative to the parent feedstuff becomes important to evaluate. Hall and Huntington (2008) explored factors that affect our ability to impose nutritional synchrony in ruminant nutrition. Nutrient supply, ruminal considerations, postruminal nutrient supply and use, and animal
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ALPHARMA BEEF CATTLE NUTRITION SYMPOSIUM: Implications of nutritional management for beef cow-calf systems1
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The concept of improving animal performance through synchronizing ruminal availability of nutrients has been with us for at least 3 decades. Though theoretically appealing, research and eld results have not supported this approach to diet formulation. Why? Essential to successful ruminal synchrony is the ability to predict available amounts and fates of diverse substrates. The substrates come ...
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ورودعنوان ژورنال:
- Journal of animal science
دوره 86 14 Suppl شماره
صفحات -
تاریخ انتشار 2008