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约氏乳杆菌对0~17周龄蛋鸡生产性能、脏器指数及血清抗体水平和生化指标的影响

DOI: 10.3969/j.issn.1006-267x.2013.06.022

Keywords: 约氏乳杆菌,蛋鸡,生产性能,脏器指数,血清抗体水平,血清生化指标

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Abstract:

本试验旨在研究不同剂量约氏乳杆菌对0~17周龄蛋鸡生产性能、脏器指数及血清抗体水平和生化指标的影响。选用1日龄京红蛋雏鸡540只,随机分成6组,每组6个重复,每个重复15只鸡。Ⅰ组为对照组,饲喂基础饲粮,Ⅱ~Ⅵ组为试验组,饲喂在基础饲粮中分别添加1.0×104、1.0×105、1.0×106、1.0×107和1.0×108CFU/g约氏乳杆菌的试验饲粮,试验期120d。结果表明:1)0~17周龄,Ⅳ、Ⅴ、Ⅵ组蛋鸡采食量显著低于对照组(P<0.05),Ⅳ组和Ⅵ组蛋鸡料重比显著低于对照组(P<0.05),各组蛋鸡体增重无显著差异(P>0.05)。2)Ⅵ组蛋鸡心脏、肺脏、肾脏指数显著低于对照组(P<0.05),Ⅳ组蛋鸡肾脏指数显著低于对照组(P<0.05)。3)13周龄,Ⅳ、Ⅴ、Ⅵ组蛋鸡血清免疫球蛋白A水平和新城疫抗体水平显著高于对照组(P<0.05)。4)各组蛋鸡血清生化指标(碱性磷酸酶、谷草转氨酶和谷丙转氨酶活性及葡萄糖、尿素氮、总蛋白、白蛋白、肌酐、总胆红素含量)差异不显著(P>0.05)。综合考虑约氏乳杆菌对0~17周龄蛋鸡生产性能、脏器指数和血清抗体水平的影响可知,饲粮中约氏乳杆菌的最佳添加剂量为1.0×108CFU/g。

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