Effects of Dietary Lysine Level on Laying Performance,Egg Quality and Serum Biochemical Indices of Wulong Geese during Laying Period
In order to screen the dietary lysine appropriate level for Wulong geese,this study was conducted to investigate the effects of dietary lysine level on laying performance,egg quality and serum biochemical indices of Wulong geese during laying period.One hundred and twenty 34-week-old Wulong geese with similar body were selected and randomly divided into six groups with four replicates in each group and five geese(one male and four females)in each replicate.Geese in o six groups were fed diets with lysine levels of 0.53％,0.62％,0.73％,0.83％,0.92％and 1.03％,respectively.The experiment lasted for 17 weeks.The results showed as follow:1)the feed to egg ratio of 0.83％group was significantly lower than that of 0.53％and 1.03％groups(P＜0.05).2)The yolk color of 0.83％group was significantly higher than that of 0.53％,0.62％and 1.03％groups(P＜0.05).3)The serum total protein content of 0.83％group was significantly higher than that of 0.53％,0.62％and 1.03％groups(P＜0.05),the serum uric acid content of 0.83％group was significantly lower than that of 0.53％,0.62％and 1.03％groups(P＜0.05),the serum triglyceride content of 0.83％group was significantly lower than that of 0.53％,0.62％,0.92％and 1.03％groups(P＜0.05),and the ser-um total cholesterol content of 0.83％group was significantly lower than that of 0.53％and 1.03％groups(P＜0.05).4)By fitting dietary lysine level to feed to egg ratio,laying rate,average egg weight and serum total protein,uric acid,total cholesterol contents,the dietary appropriate lysine level for Wulong geese was 0.79％to 0.83％.In conclusion,comprehensive consideration all indices,the dietary appropriate lysine level for Wu-long geese during laying period is 0.81％.[Chinese Journal of Animal Nutrition,2024,36(11):7051-7059]
lysineWulong geeselaying performanceegg qualityserum biochemical indices
万方数据
维普
