منابع مشابه
Efficiency of Feed Utilisation by Ruminants
Metabolisable energy content of a feed or its components has been used to assess its feeding value for ruminants. The demonstration that VFA energy could, at times, be used highly inefficiently when included in a roughage diet, led to the suggestion that feeds for ruminants should be evaluated in terms of their net energy. The establishment of calorimetry technology in nutritional research was ...
متن کاملEfficiency of energy utilisation and voluntary feed intake in ruminants.
Energy requirements of animals are most readily expressed in terms of net energy (NE), while the energy yield of feed is, at least initially, expressed in terms of metabolisable energy (ME). Energy evaluation systems 'translate' NE requirements into ME requirements (ME systems) or assign NE values to feeds (NE systems). Efficiency of ME utilisation is higher for maintenance than for production ...
متن کاملPhytate and phytase: consequences for protein utilisation.
The excretion of large amounts of P in effluent from intensive pig and poultry units is indicative of the poor availability of phytate-bound P in plant-derived feed ingredients. This environmental problem prompted the development and acceptance of microbial phytase feed enzymes for single-stomached animals. Their introduction led to an increasing recognition that phytate may have adverse effect...
متن کاملEffect of growth rate on quality traits and feed ž / utilisation of rainbow trout
Ž . Rainbow trout Oncorhynchus mykiss of initial average weight 150 g and brook trout Ž . SalÕelinus fontinalis initially weighing 124 g on average, were reared at different growth rates Ž . Ž . by feeding either a high H, close to satiation or low L, half of H ration of a commercial diet. Fish were reared for 6 to 15 weeks in order to reach same size class. Fast growth increased whole Ž . Ž . ...
متن کاملAdjusted as Published in: Afma Matrix, December 2001. Utilisation of feed phosphates: Fact or confusion?
Feedstuffs of plant origin do not contain enough digestible phosphorus to meet the requirements for animal production. For this reason additional inorganic P is added to animal diets. Feedstuffs of plant and animal origin as well as inorganic phosphate sources contain various amounts of phosphate that is available for biochemical functions. Therefore most Nutritionists include a safety factor t...
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ژورنال
عنوان ژورنال: Annales de Zootechnie
سال: 1980
ISSN: 0003-424X
DOI: 10.1051/animres:19800511