维生素C和中草药添加剂对夏季种公鸡血浆生殖激素的影响

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

选取30只40周龄体重一致的安卡红种公鸡,随机分为3组,分别为维生素C组、中草药组和对照组,分别在两试验组饲喂的基础日粮中添加250 mg/kg的维生素C、1.5%的中草药,对照组饲喂基础日粮,研究维生素C和中草药添加剂对夏季种公鸡血浆生殖激素的影响。结果表明:(1)试验60 d时,与预饲期相比,维生素C组公鸡血浆睾酮、促黄体素、促卵泡素浓度分别增加了0.31 ng/L(P<0.05)、0.45 mIU/mL(P<0.05)和0.13 mIU/mL(P<0.05);中草药组公鸡血浆睾酮、促黄体素、促卵泡素浓度分别增加了1.97 ng/L(P<0.01)、1.62 mIU/mL(P<0.01)和0.88 mIU/mL(P<0.01)。(2)试验期60 d时,不同组别之间进行比较,中草药组公鸡血浆睾酮浓度比对照组提高了82.72%(P<0.01),同时维生素C组比对照组提高了18.94%(P<0.05);中草药组公鸡血浆促黄体素浓度比对照组提高了77.92%(P<0.01),同时维生素C组比对照组提高了22.51%(P<0.05);中草药组公鸡血浆促卵泡素浓度比对照组提高了73.28%(P<0.01),同时维生素C组比对照组提高了12.98%(P>0.05)。说明在热应激条件下,在日粮中添加适量的维生素C和中草药可不同程度地提高种公鸡血浆生殖激素水平。

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 mlU/mL（P 〈 0.05）;in Chi- nese 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 concen- trations 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 hor- mone levels of summer cocks.