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Effects of vitamin C and Chinese herbs on plasma reproductive hormones of cocks in Summer

Tan Qianhong;  
A total of 30 forty-week-old Anka cocks with consistent weight were randomly divided into three groups in summer,which were vitamin C group,Chinese herbs group and the control group,the test groups were fed the basal diet supplemented with 250 mg/kg of vitamin C,1.5% of herbs respectively,control group was fed the basal diet,to study effect of vitamin C and Chinese herbs on serum hormone of summer cocks.The results showed that:(1)Compare with adaptation period,at 60 d,the concentration of plasma testosterone(T),luteinizing hormone(LH),follicle stimulating hormone(FSH) of cockerel in vitamin C group increased 0.31 ng/L(P 0.05),0.45 mIU/mL(P 0.05),0.13 mIU/mL(P 0.05);in Chinese herbs group,the cockerel plasma testosterone LH,FSH level increased 1.97 ng/L(P 0.01),1.62 mIU/mL(P 0.01), 0.88 mIU/mL(P 0.01),respectively.(2)Making comparisons between different groups at 60 d,plasma testosterone concentrations of herbal group was 82.72% higher than that of control group,the difference was significant(P 0.01),while which of vitamin C group increased 18.94%(P 0.05);plasma LH concentration of Chinese herbs group was 77.92% higher than that of the control group,the difference was significant(P 0.01),while which of vitamin C group increased 22.51%(P 0.05);plasma FSH concentration of Chinese herbs group was 73.28% higher than that of the control group,the difference was significant(P 0.01),while which of vitamin C group increased 12.98%(P 0.05).The results indicated that under heat stress conditions,adding appropriate amount of vitamin C and herbs in diets could improve plasma reproductive hormone levels of summer cocks.
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