动物营养学报Issue(6)：1652-1659,8.DOI:10.3969/j.issn.1006-267x.2014.06.029
高剂量植物甾醇对蛋鸡生产性能、蛋品质及脂质代谢的影响
Effects of High-Dose Phytosterol on Performance, Egg Quality and LiPid Metabolism of Laying Hens
摘要
Abstract
This experiment was conducted to evaluate the safety of high-dose phytosterol supplementation for laying hens by determining performance,egg quality and lipid metabolism. Three hundred and sixty 21-week-old Hy-Line Brown laying hens with similar body weight and laying rate were randomly assigned to 5 groups with 6 replicates of 12 birds each. Birds were fed basal diets supplemented with 0(control),20,80(the max-imum recommended valid dose,MRAD),400(five folds of MRAD)and 800 mg / kg(ten folds of MRAD) phytosterol for 12 weeks,respectively. All birds were acclimated to the basal diet for 3 weeks. The results showed as follows:dietary phytosterol had no significant effects on laying rate,feed intake,egg mass and the ratio of feed to egg(P>0.05). Only egg yolk,albumen and eggshell percentages were significantly affected by dietary phytosterol in the end of this experiment(week 12)(P<0.05),and there was a significant linear cor-relation between eggshell(or albumen)percentage and phytosterol supplemental level(P<0.01 and P<0.05, respectively),and the experimental groups were higher than the control group. Dietary phytosterol had a signif-icant effect on hepatic low density lipoprotein-cholesterol content(P<0.05). Dietary phytosterol had a signifi-cant effect on hepatic lipoprotein lipase activity( P<0.05),and there was a significant linear correlation be-tween hepatic lipoprotein lipase activity and phytosterol supplemental level( P <0.01). Egg yolk cholesterol content was significantly increased by dietary phytosterol(P<0.05),and there was a significant linear correla-tion between egg yolk cholesterol content and phytosterol supplemental level(P<0.01);while dietary phytos-terol had no significant effect on hepatic cholesterol content(P>0.05). It is indicated that there is no adverse effect on laying performance,egg quality and cholesterol content except for yolk cholesterol content of high-dose phytosterol.关键词
产蛋鸡/植物甾醇/生产性能/蛋品质/脂质代谢Key words
laying hens/phytosterol/performance/egg quality/lipid metabolism分类
农业科技引用本文复制引用
常玲玲,沈一茹,周春江,王志跃,童海兵,邹剑敏,施寿荣..高剂量植物甾醇对蛋鸡生产性能、蛋品质及脂质代谢的影响[J].动物营养学报,2014,(6):1652-1659,8.基金项目
“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 （）
