饲料中添加甜菜碱在池塘中培育鱼种的试验

An Experiment in Rearing of Fingerlings in ponds by Feeding betaine added pellet

在二口池塘中培育鱼种，亩放养量等同，其中鲤鱼种占80．0％，试验池1．5亩，对照池1．4亩，除添加0．3％的甜菜碱外，试验池与对照池饲料配方完全相同。试验为期100天。结果为：试验池、对照池亩产量分别为235．49kg、209．69kg，亩利润分别为548．26元、437．8元，投入产出比别为1∶1．31、1∶1．26。饲料系数分别为1．92、2．15；饲料经济效率提高6．38％，本试验结果表明：饲料中添加一定量的甜菜碱可以起到诱食促生长作用，并且从经济效益上讲也是可行的。

Fingerlings were reared in 2 ponds,one of which was 1. 5 mu and was used as the test pond,the other was was 1. 4 mu and was used as the control pond. The number of fish breeded in the two ponds were the same,The composition of the test pellet was the same as that of the control pellet except for 0. 3 percent betaine was added into the test pellet. The results were as follows. The gross yields of the test and control pond were 235. 49 and 209. 69 kg/mu respectively. profits of the test and control plond were 548. 26and 437. 8 yuan(￥) /mu respectively. The feed coeffecients of the test and control pellets wers 1. 92 and2.15respectively. The economic efficiency of the test pellet was 6. 38% higher than that of the control pond. the results of the experiment show that if betaineis added into the pellet in a reasonable amount,the economic efficiency of fish culture is good.