添加稀土元素的配合饲料对中国对虾生长效果的研究

THE STUDY ON EFFECT OF ARTIEICIAL FEED WITHRARE- EARTH ELEMENTS ON PENAEUS CHINENSIS GROWTH

本文讨论了添加稀土元素的配合饲料对中国对虾（Ｐｅｎａｅｕｓｃｈｉｎｅｎｓｉｓ）生长效果的影响。从试验中得到以下结论。（１）添加稀土元素的配合饲料对其有促生长作用，其适宜添加量为３０～１００ｍｇ／ｋｇ，其中以添加６０ｍｇ／ｋｇ为最适宜，该组增长比为１３５，增重比为１５０（对照组为１００）。（２）成活率有不同，但差别不明显，说明稀土元素对其成活率无明显影响。（３）用添加６０ｍｇ／ｋｇ稀土元素的饲料在中型水面养虾，产量比对照增加３１％，体长增０．３厘米。（４）稀土元素的促生长作用机理有待进一步研究。

This paper dicussed the effect of the artificial feed with some rare- earth ele-ments on penaeus chinensis growth. Conclusions drawn from the test are as follows:1.Artificial feed adding some rare- earth elements promotes the grouth of prawn, Theoptimum additim is 30- 100 mg/kg with 60mg/kg being the best.The growth rate of thisgroup is 135, and its increasing weight rate is 150(with the control group as 100)。2.Although the survival rates are not alike,the difference is not very signifficant.Thisresult shows that the rare-earth element have no dbvidus influences on the survival rate ofprawn.3.When the prawns are reared with artificial feed containing 60mg/kgrare-earthinmedium-size water,its output increases by 3 1%and the body length increases by 0.3cm ascompared with that in control pond.4.The mechanisnls of promoting growth function for adding rare- earth elements remaintoberesearehedfurther.