T Nutrition & Health : Poultry
نویسنده
چکیده
THERE is a wealth of information available on alternative feeding programs for broilers, layers and turkeys, the basis of which has always been the various National Research Council (NRC) publications. The most recent such publication is Nutrient Requirements of Poultry, Ninth Revised Edition, released in 1994, and so unfortunately this information is now 17 years old, which is a considerable time period considering the continual improvement in genetic potential of and meat birds and especially the changes seen in egg layers. Nutritionists invariably criticize these NRC recommendations as not representing the needs of poultry housed and managed under commercial conditions, which is a situation refl ecting local knowledge that infl uences their specifi c farm operations. On the other hand, as feed costs increase, there is an interesting trend back towards these lower levels of nutrients as recommended by NRC (1994).
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