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去盲肠鸡和正常鸡测定的饲料氨基酸消化率可加性比较
COMPARISON OF ADDITIVITY OF AMINO ACID DIGESTIBILITY OF FEEDSTUFFS DETERMINED WITH CAECECTOMIZED AND INTACT COCKERELS
【摘要】 本研究以去盲肠鸡和正常鸡按Sibbald的“TME”方法分别测定了皮大麦、蒸煮血粉、发酵血粉、水解复合蛋白、热喷胶原蛋白、国产鱼粉及其配合饲料J1和J2的氨基酸表观消化率(AAAD)和真消化率(TAAD)。并对两种试鸡所测上述饲料原料氨基酸的消化率及其可加性作比较。结果表明:(1)6种饲料原料的某些氨基酸表观消化率和真消化率,去盲肠鸡和正常鸡测值间存在显著差异(P<0.05)。(2)去盲肠鸡内源氨基酸排出量显著高于正常鸡(P<0.05)。(3)在以非常规蛋白质为主要补充蛋白质源时,以去盲肠鸡测得的真可消化氨基酸具有最好的可加性。说明测定鸡饲料氨基酸消化率以去盲肠鸡为试验动物较好
【Abstract】 おpparent amino acid digestibilities (AAAD) and true amino acid digestibilities (TAAD) of six feedstuffs (barley,cooking blood meal,fermented blood meal,protein hydrolysate mixed feed,heatextruded collagen protein and local fish meal) and their mixed feeds(J1 and J2) were determined with intact and caecectomized cockerels,using Sibbaled “TME” method,and their additivities were also tested.The results indicated that (1) there were significant differences between digestibilities of certain amino acids tested with intact cockerels and those tested with caecectomized birds (P<005);(2) endogenous amino acid excretions in caecectomized birds were higher than those in intact birds (P<005) ;(3) the additivities of true amino acid digestibility determined with caecectomized birds were superior to those tested with intact birds.The results suggested that caecectomized birds might be better test animals in evaluation of amino acid digestibility in poultry feedstuffs.
【Key words】 Amino acid digestibilty; Additivity; Caecectomized cockerels; Intact cockerels;
- 【文献出处】 畜牧兽医学报 ,Chinese Journal of Animal and Veterinary Sciences , 编辑部邮箱 ,1998年01期
- 【分类号】S831
- 【被引频次】34
- 【下载频次】148