摘要
本试验旨在研究饲粮中添加高剂量植物甾醇对产蛋鸡生产性能、血液常规指标和血清生化指标的影响,以确定植物甾醇对产蛋鸡的安全性。选取体重和产蛋率相近的21周龄海兰褐蛋鸡360只,随机分为5组,每组6个重复,每个重复12只。对照组饲喂基础饲粮,试验组饲喂在基础饲粮中分别添加20、80(最高推荐有效剂量)、400(5倍最高推荐有效剂量)、800 mg/kg(10倍最高推荐有效剂量)植物甾醇的试验饲粮,预试期3周,试验期12周。结果表明:植物甾醇对产蛋鸡产蛋率、采食量、产蛋量和料蛋比均无显著影响(P>0.05),对各项血液常规指标均无显著影响(P>0.05)。植物甾醇仅对血液葡萄糖含量有显著影响(P<0.05),葡萄糖含量与植物甾醇添加量呈显著线性关系(P=0.010),对其他血清生化指标没有显著影响(P>0.05)。可知,在产蛋鸡饲粮中添加高剂量植物甾醇对产蛋鸡本身没有副作用。
This experiment was conducted to evaluate the safety of high doses of phytosterol supplementation in laying hens by determining production performance, blood routine parameters and serum biochemical parame- ters. Three hundred and sixty 21-week-old Hy-Line Brown laying hens with the similar body weight and laying rate were randomly assigned to 5 groups with 6 replicates per group and 12 birds each. Birds were fed basal di- ets supplemented with 0 （control）, 20, 80 （the maximum recommended available dose, MRAD）, 400 （five fold of MRAD） and 800 mg/kg （ten fold of MRAD） phytosterol for 12 weeks, respectively. All birds were acclimated to the basal diet for 3 weeks. The results showed as follows： phytosterol had no significant effects on laying rate, feed intake, egg mass, the ratio of feed to egg and blood routine parameters （ P 〉 0.05）. Only serum glucose content was significantly affected by phytosterol supplementation （P 〈 0.05 ）, and there was a significant linear correlation between them （ P = 0. 010 ）, while there were no significant differences in other serum biochemical parameters among five groups （P 〉 0.05 ）. It is indicated that no adverse effects are ob-served in laying hens by the high doses of phytosterol supplementation.
出处
《动物营养学报》
CAS
CSCD
北大核心
2013年第5期1099-1104,共6页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
"十二五"国家科技支撑计划(2012BAD39B04)
农业部饲料质量安全监管项目(2012)
公益性(农业)行业专项(201003011)
关键词
安全性评价
植物甾醇
产蛋鸡
生产性能
血液常规指标
safety evaluation
phytosterol
laying hens
production performance
blood routine parameters
