鱼微生物饲料添加剂(8801)对鲤鱼促生长试验

EFFECT OF MICROBIAL ADDITIVE "8801" ON CARPS GROWTH

本试验应用四川农业大学微生态制剂厂生产的鱼微生物饲料添加剂（８８０１）对鲤 鱼进行促生长试验．对鱼种和成鱼均按所用配合料总量添加０．２％ ８８０１．试验 结果尾重５克以上试验鱼种５６８８０尾，试验１２３天，按国家标准基础日粮营养水 平，试验组提高增重３６．６％，提高成活率１０％，耗料下降１８．２％，饵料系数１．８； 低于国家标准基础日粮营养水平，试验组提高增重１９．５％，提高成活率５％，耗 料下降９．５％，饵料系数１．９；尾重１２５克以上试验成鱼２２２５７尾，试期１３５天，按 国家标准基础日粮营养水平，试验组提高增重１１．６７％，提高成活率６．５％，耗料 下降８．７％，饵料系数２．１。低于国家标准基础日粮水平，试验组提高增重１０．６４％， 提高成活５．４％，耗料下降６．９％，饵料系数２．１５％。可以结论，微生物添加剂在适 宜营养水平下，具有有效的促生长作用．

The comparison trial of fingecling and growing carp were introduced to study the effects of microbial additivie '8801' in two diets of different nutrient levels on fish growth. The results showed that 0. 2% '8801' in the diet of standerd nutient level respectively rasied fingerling and growing carp weight gain 36.6% 11. 67% more than the control growp, and that 0. 2% '8801' in the diet of 10% lower nutient level raised fingerling and growing carp weight gain 19. 5%, 10. 64% more respectivily than the control growp. It can be .concluded that the nutient level is the key factor on the effect of growth-promted of Microbial additives.