Effect of Bacillus subtilis on Serum Follicle Hormone and Luteinizing Hormone Levels in Heat-stressed Breeder Chickens
This study was conducted to investigate the effects of Bacillus subtilis on the content of serum follicle-stimulating hormone(FSH)and luteinizing hormone(LH)in broilers under heat stress.A total of 120 21-day-old healthy Kebao broilers with similar body weight were randomly divided into 3 groups:control group(CON group),heat stress group(HS group)and heat stress+Bacillus subtilis group 300 mg/kg(HS+BS group).The experiment lasted for 21 days.The results showed as follows:Compared with CON group,the serum FSH and LH contents in HS group were significantly decreased(P＜0.05),while the heat shock protein(HSP70)content in ovarian tissue was significantly increased;Compared with HS group,the serum FSH and LH contents in HS+BS group were significantly higher than those in HS group(P＜0.05),and the HSP70 content in ovarian tissue was significantly lower than that in CON group(P＜0.05),indicating that Bacillus subtilis can effectively improve the serum FSH and LH contents of broilers under heat stress.And reducing the expression level of HSP70 is helpful to alleviate the dysregulation of reproductive hormone secretion induced by heat stress,and then improve the reproductive performance of broilers under heat stress.
万方数据
维普
