Nutritive evaluation of legume seeds for ruminant feeding.
Chemical composition, rumen degradability and the effect of particle losses, and intestinal digestibility of protein by using in situ-in vitro and in vitro techniques were stated for beans (Vicia faba), lupin (Lupinus albus), vetch (Vicia sativa) and bitter vetch (Vicia ervilia) and four diets including those legume seeds. In addition, the apparent digestibility of experimental diets was determined in goats. The legume seeds showed high protein content (206-319 g/kg dry matter). Effective degradability of protein for legumes and diets varied from 0.80 to 0.87 and 0.76 to 0.82, respectively, decreasing to 0.53-0.76 and 0.61-0.67, respectively, when particle loss was taken into account. Different intestinal digestibility values were obtained with both methodologies without significant relationship between them (y = 1.058-0.463x; R(2)=0.068; RSD = 0.140; p = 0.53). There were no differences in the apparent nutrients and energy digestibility among diets (p > 0.05). These legumes can supply rapidly degradable protein for microbial protein synthesis and contribute to the pool of amino acids available for the synthesis of milk protein and for retention in the body.
Ramos-Morales
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E
Department of Animal Nutrition, Estación Experimental del Zaidin (CSIC), Albareda, Granada, Spain.
Sanz-Sampelayo
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MR
Molina-Alcaide
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E
D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004032:Diet / Q000662:veterinary; D004063:Digestion / Q000502:physiology; D004734:Energy Metabolism; D007887:Fabaceae / Q000737:chemistry*; D006041:Goats / Q000502:physiology*; D007413:Intestinal Mucosa / Q000378:metabolism; D009753:Nutritive Value; D029702:Schizosaccharomyces pombe Proteins / Q000378:metabolism; D012639:Seeds / Q000737:chemistry*
C086077:Rum1 protein, S pombe; D029702:Schizosaccharomyces pombe Proteins