动物营养学报2023，Vol.35Issue(12)：7702-7713,12.DOI:10.12418/CJAN2023.700
甘氨酸锰对产蛋后期蛋鸡产蛋性能、激素水平和脂质代谢的影响
Effects of Manganese Glycine on Laying Performance,Hormone Level and Lipid Metabolism of Laying Hens during Late Laying Period
摘要
Abstract
The aim of this study was to investigate the effects of manganese glycine on laying performance,hormone level and lipid metabolism of laying hens during late laying period.A total of 720 healthy 70-week-old Hy-Line brown hens with similar laying rate were randomly divided into 4 groups with 6 replicates per group and 30 birds per replicate.Hens in the control group were fed a basal diet supplemented with 120 mg/kg man-ganese sulfate(calculated as manganese,the same as below),and others in experimental groups were fed bas-al diets supplemented with 40(group Ⅰ),80(group Ⅱ)and 120 mg/kg(group Ⅲ)manganese glycine,respectively.The experiment lasted for 12 weeks.The results showed as follows:1)the laying rate during 77 to 82 weeks of age of group Ⅰ was significantly higher than that of the control group and group Ⅱ(P＜0.05);the laying rate at 80 weeks of age of group Ⅰ and group Ⅲ was significantly higher than that of the control group(P＜0.05);the laying rate at 82 weeks of age of group Ⅰ,group Ⅱ and group Ⅲ was significantly higher than that of the control group(P＜0.05),and the group Ⅰ was significantly higher than group Ⅱ and group Ⅲ(P＜0.05).2)There were no significant differences in reproductive organ development indexes,liv-er index and abdominal fat percentage of laying hens during late laying period among all groups(P＞0.05).3)The serum progesterone level of group Ⅰ,group Ⅱ and group Ⅲ was significantly higher than that of the con-trol group(P＜0.05).4)The contents of triglyceride,total cholesterol,low-density lipoprotein cholesterol and free fatty acid in liver of group Ⅰ,group Ⅱ and group Ⅲ were significantly lower than those of the control group(P＜0.05),while the liver high-density lipoprotein cholesterol was significantly higher than that of the control group(P＜0.05).5)The area and ratio of lipid droplet in liver of group Ⅰ,group Ⅱ and group Ⅲwere significantly lower than those of the control group(P＜0.05).In conclusion,dietary supplemented with 40 to 120 mg/kg manganese glycine can improve the liver lipid metabolism and increase the serum progester-one level of laying hens during late laying period,and dietary supplemented with 40 mg/kg manganese glycine can increase the laying rate at the late stage of the experiment(77 to 82 weeks of age).[Chinese Journal of Animal Nutrition,2023,35(12):7702-7713]关键词
甘氨酸锰/蛋鸡/产蛋后期/脂质代谢/生殖激素/产蛋性能Key words
manganese glycine/laying hens/late laying period/lipid metabolism/reproductive hormone/laying performance分类
农业科技引用本文复制引用
卢建,王强,李永峰,李尚民,曲亮,江栋材,戴年山,张欣,马猛,郭军,王星果,窦套存,胡玉萍..甘氨酸锰对产蛋后期蛋鸡产蛋性能、激素水平和脂质代谢的影响[J].动物营养学报,2023,35(12):7702-7713,12.基金项目
现代农业产业技术体系建设专项资金(CARS-40-K01) （CARS-40-K01）
国家重点研发计划(2022YFD1300100) （2022YFD1300100）
江苏现代农业产业技术体系建设项目(JATS[2022]073) （JATS[2022]073）
江苏省种业振兴揭榜挂帅项目(JBGS[2021]104) （JBGS[2021]104）
