日粮中添加大豆素对犊公牛生长性能、机体抗氧化能力及免疫性能的影响

Effects of Daidzein on Growth Performance,Antioxidant Capacity and Immune Function of Bull Calves

试验旨在研究日粮中添加大豆素对犊公牛生长性能、抗氧化能力及免疫性能的影响。选取8头健康,平均体质量为(143.7±5.6)kg的6月龄犊公牛,随机分为2组,每组4头牛。对照组饲喂基础日粮,试验组饲喂在基础日粮中添加300 mg/kg大豆素的试验饲粮。结果表明,与对照组相比,试验组平均日增重增加了97.1 g/d(P=0.026);血清T-SOD、GSH-Px、Ig G、Ig M、IGF-1等指标分别提高了12.2%(P=0.029)、15.5%(P=0.046)、27.5%(P=0.003)、11.4%(P=0.008)和49.3%(P<0.001);血清中血糖(P=0.005)和总胆固醇(P=0.080)浓度则有降低和降低趋势。综上所述,犊牛日粮中添加大豆素对其生长性能、机体抗氧化、免疫能力均有益处,可以作为犊牛日粮添加剂应用于生产实践。

This study was conducted to investigate the effects of daidzein on growth performance,antioxidant capacity and immune function of bull calves.Eight healthy 6-month old bull calves(143.7±5.6 kg)were randomly divided into two groups.The control group was fed with a basal diet,and the treatment group was fed with a basal diet supplemented with 300 mg/kg of daidzein.The results showed as follows:compared with the control group,the average daily gain in the treatment group increased by 97.1 g/d(P=0.026);the content of total super oxided dismutase(T-SOD),serum glutathione peroxidase(GSH-Px),serum IgG and IgM,and IGF-1 in the treatment group increased by 12.2%(P=0.029),15.5%(P=0.046),27.5%(P=0.003),11.4%(P=0.008),and 49.3%(P<0.001),respectively,the serum glucose(P=0.005)and serum total cholesterol(P=0.080)in the treatment group reduced and tended to reduce,respectively.This study demonstrates that supplementation with daidzein in the diet could enhance the growth performance,antioxidant capacitiy,and immune capacity of bull calves.