三种饲料添加剂对霉变饲料饲喂肉鸡的脱毒效果

选用180只8日龄艾维茵肉仔鸡,研究3种饲料添加剂(大豆异黄酮、葡甘露聚糖和膨润土)对饲喂霉变饲料的肉鸡生长性能、免疫功能和骨骼的影响。结果表明,与正常饲料组相比,霉变饲料组显著地降低了肉鸡的采食量、日增重,增加了料肉比(P<0.05);但霉变饲料中添加大豆异黄酮,显著地提高了肉鸡采食量、日增重(P<0.05),降低了料肉比(P<0.05),提高了7周末血清中免疫球蛋白IgA和IgG的浓度。霉变饲料中添加葡甘露聚糖和膨润土显著提高肉鸡日增重(P<0.05),对日采食量有提高的趋势(P>0.05)。但膨润土显著降低了胫骨中钙、磷的含量(P<0.05)。由此可见,3种添加剂对霉变饲料均有一定的脱毒作用,大豆异黄酮对霉变饲料的脱毒效果显著优于葡甘露聚糖和膨润土。

Comparative study of three additives on broilers fed mold-contaminated feed

One hundred and eighty 8-day-old avian broilers were used to investigate effects of isoflavone(SI),bentonite and glucomannan,on growth,immunity function and tibia.Feed intake and average daily weight gain were significantly decreased but the feed/gain ratio increased significantly(P<0.05) in broilers fed moldy corn diets than those fed less moldy corn diets.Both feed intake and average daily gain increased significantly while the feed/gain ratio was decreased substantially in broilers by adding 100 and 200 mg/kg SI.Also,serum IgA and IgG concentrations increased significantly(P<0.05).The average daily gain in broilers was significantly(P<0.05) increased by adding 0.05% bentonite or 0.05% glucomannan.However,calcium and phosphate levels in tibia were significantly decreased by adding 0.05% bentonite.In conclusion,soybean isoflavones more significantly increased growth of Avian broilers when added to a moldy corn diet than glucomannan or bentonite.