酵母铬对蛋用种鸡物质代谢及血清生化指标的影响  

Effects of yeast chromium on material metabolism and serum biochemical indices in breeder hens

作　　者：石俭省[1] 刘永爱[1] 王颂萍[1] 韩爱云[2] 

机构地区：[1]河北工程大学农学院 [2]石家庄学院化工学院

出　　处：《中国饲料》2012年第20期22-27,共6页China Feed

基　　金：河北省科学技研究计划项目(072204010-2);博士科研启动基金(10BJ002)

摘　　要：试验选择50周龄海兰灰蛋用种鸡576只,随机分为6组(Ⅰ～Ⅵ),每组3个重复,每个重复32只鸡,分别添加0、0.2、0.4、0.8、1.0、2.0 mg/kg铬(酵母铬),试验为期6周。旨在研究不同水平酵母铬对蛋用父母代种鸡物质代谢和血清脂质的影响。结果表明,日粮中添加0.4～2.0 mg/kg酵母铬可显著降低血清甘油三脂水平(P<0.05),可显著增加血清高密度脂蛋白含量;日粮中添加1.0、2.0 mg/kg酵母铬可显著降低血清总胆固醇水平(P<0.05);日粮添加1.0 mg/kg铬可显著提高羽毛及胸肌铬含量(P<0.05);日粮添加2.0 mg/kg铬可显著提高种鸡血浆、脾脏及羽毛铬含量(P<0.05)。日粮添加中等剂量(0.4、0.8、1.0 mg/kg)的酵母铬显著提高了粗蛋白质与粗脂肪的表观代谢率(P<0.05),并且能显著增加种鸡能量与蛋白质沉积(P<0.05或P<0.01)。综合分析,在种母鸡日粮中添加酵母铬有助于改善机体蛋白质、脂肪代谢及能量与蛋白质的沉积,其中酵母铬添加量为1.0 mg/kg效果最好。The experiment was conducted to study the effects of Yeast Chromium on material metabolism and serum biochemical indices of breeder hens.576 50-week-old Hylan breeder hens were randomly allotted to 6 treatments （Ⅰ～Ⅵ）with 3 replicates of 32 each. The hens in treatmentⅠ～Ⅵ were fed 0,0.2,0.4,0.8,1.0,2.0 mg/kg Cr in diet for 6 weeks.The results showed that ：supplemental chromium （0.4 - 2.0 mg/kg Cr）decreased serum triglyceride concentration （P 〈 0.05）,increased the High density lipoprotein-cholesterol of the serum ; 1.0,2.0 mg/kg Cr as yeast chromium could de- crease serum tolal cholesterol level （P 〈 0.05）.The supplemental chromium （1.0 mg/kg Cr）increased chromium content in feather and chest （P 〈 0.05）.0.4 - 1.0 mg/kg chromium improved the protein and fat met abolizability （P 〈 0.05）, and increased the energy and protein deposition （P 〈 0.05）.The results indicated that yeast chromium could modify the energy, protein and fat metabolism, and the optimum adding level of Cr in the diet was 1.0 mg/kg.

关 键 词：酵母铬 胆固醇 蛋白质 脂肪 

分 类 号：S816.7[农业科学—饲料科学]