红三叶草总异黄酮对小公鸡生长及血清睾酮水平的影响

日粮中添加红三叶草总异黄酮（４．３８ｍｇ／ｋｇ饲料），饲喂４５－５６日龄红布罗肉用公仔鸡，与对照组比较，总异黄酮实验组公仔鸡日增重提高５．１％，料重比下降９．２％，提高了饲料的利用率。屠宰结果表明，腹脂重、腹脂／胴体显著降低，鸡冠重、睾丸重增加，鸡冠、睾丸和体重间的相关分析，睾丸石蜡切片和血清睾酮含量的放射免疫测定，均表明总异黄酮能提高血清睾酮水平，促进雄性动物生殖系统发育。

EFFECTS OF TOTAL ISOFLAVONES OF RED CLOVER ON MALE BROILER GROWTH AND SERUM TESTOSTERONE CONCENTRATION

Total isoflavones extracted from red clover were supplemented in the diets (4.38 mg/kg feed) of male Redbro broilers (45-56 days of age, n=15). Body weight gain of treated male chickens increased by 5. 1%, feed conversion increased by 9.2%. Slaughter results showed that abdominal fat pad and ratio of abdominal fat pat to carcass weight decreased significantly, whereas comb weight, testis weight increased. The analysis of correlation coefficient between comb. testis and body weight, the observation of paraffin seetions of testis and the radioimmunoassay (RIA) of the serum testosterone levels indicated that the total isoflavons could elevate serum testosterone levels and promote the development of the reproductive organs of male broiler chickens.