【摘要】 本文报道了中国对虾摄食补充锌饵料的实验结果。结果表明,饵料中加锌与不加锌,对对虾的增长、增重和成活率均无明显差异;各组对虾肝胰脏中羧肽酶A的比活性也无显著变化。我们认为,利用上述原料生产的对虾配合饵料,可以不加锌,即使饵料中含锌量较高,对对虾也没有什么危害。更多还原

【Abstract】 Effects of dietary zinc on prawn, Penaeus Orientalis,were investigated by feeding them with diets containing peanut cake, fish meal, corn meal, sweat potato meal, wheat bran and graded levels of zinc, The results of the present study showed that no significant difference of the growth and the survival of the animals were found between the group with suple-ment diet of graded level of zinc and the groups without suplement of the trace element. No significant accumulation of zinc was found in the prawn and their muscle and hepatopan-creas, and specific activity of carboxypeptidase A in the hepatopancreas was not affected by the suplementing zinc. It is demonstrated that suplement of zinc to the diets is not necessary because the zinc content in the raw materials of the diets is enough for the prawn. However higher level of zinc in the diet may not produce toxicity to the animal.更多还原