山楂叶黄酮和甜菊糖苷对蛋鸡生产性能和血清生化的影响OA

This experiment investigated the effects of hawthorn leaf flavonoids and stevioside on the laying performance,egg quality and serum biochemistry of Jingfen No.6 laying hens.A total of 360 healthy 66-week-old hens were randomly assigned to four groups,each consisting of six replicates with 15 hens per group.The control group was fed a basal diet,while the treatment groups were supplemented with 120 mg/kg hawthorn leaf flavonoids,120 mg/kg stevioside,and 120 mg/kg hawthorn leaf flavonoids+120 mg/kg stevioside in the basal diet.The experiment consisted of a 2-week pre-test period followed by a 4-week main test period.The results showed that compared with the control group,the hawthorn leaf flavonoid,stevioside,and compound groups exhibited no significant differences in the laying performance of 68～72-week-old laying hens(P＞0.05).However,egg yolk color was significantly enhanced in all treatment groups(P＜0.05).Compared with the control group,the serum levels of triglyceride(TG)and low-density lipoprotein(LDL)in the hawthorn leaf flavonoids group were decreased by 22.03％and 13.88％,respectively(P＜0.05).In the stevioside group,the serum TG and LDL levels were reduced by 26.83％and 9.80％,respectively(P＜0.05).Notably,in the compound group,the serum levels of TG,LDL,and total cholesterol(TC)were decreased by 34.54％,52.65％,and 28.93％,respectively(P＜0.05).Furthermore,compared with the control group,the hepatic lipid droplet content in the hawthorn leaf flavonoid group,stevioside group,and compound group was reduced by 64.60％,67.60％,and 81.88％,respectively(P＜0.05).In conclusion,dietary supplementation with hawthorn leaf flavonoids and stevioside did not significantly affect the egg production performance of 68～72-week-old laying hens,but improved egg yolk color,serum biochemical parameters,and liver fat deposition.