Effects of Chinese herbal medicine on laying performance,egg quality,serum antioxidation,hormone level,and immune factors of Bashang long-tailed chickens in late laying stage
The purpose of this experiment was to study the effects of Chinese herbal medicine on the laying performance,egg quality,and serum indexes of Bashang long-tailed chickens in the late laying stage.A total of 240 Bashang long-tailed chickens aged 470 days were randomly divided into four groups with six replicates in each group and 10 chickens in each replicate.The control group was fed with basal diet,while the experimental groups were fed with 1.0％,1.5％,and 2.0％Chinese herbal medicine additives,respectively.The pre-test period was seven days,and the formal test period was 56 days.The results showed that compared with the control group,the laying rate of the 1.5％dosage group increased significantly(P＜0.05),and the average egg weight of the 1.0％and 2.0％dosage groups increased significantly(P＜0.05).The Huff unit of the 1.0％and 1.5％dosage group tended to increase(P＞0.05),and the eggshell thickness of the 1.5％dosage group increased significantly(P＜0.05).The activity of glutathione superoxide dismutase(GSH-Px)in serum of the 1.5％dosage group increased significantly(P＜0.05).Serum levels of luteinizing hormone(LH),estradiol(E2)and progesterone(Prog)were significantly increased(P＜0.01),and the serum levels of FSH were significantly increased in the 1.5％and 2.0％dosage groups(P＜0.01).The serum levels of interferon-γ(IFN-γ)in the 1.5％and 2.0％dosage groups were significantly increased(P＜0.01),and the serum levels of interleukin-2(IL-2)in the 2.0％dosage group were significantly increased(P＜0.01).The result shows that dietary Chinese herbal additives can increase laying rate,improve egg quality,enhance antioxidant capacity,promote the secretion of reproductive hormones,and improve the immune function of Bashang long-tail chickens in late laying period.The suitable supplemental level of Chinese herbal medicines is 1.5％.
国家科技期刊平台
NSTL
万方数据
