改变大鲵食性的探讨

本文报道对大鲵进行驯化，其食性从摄食淡水水生动物改变的摄食海产鱼、虾。投喂海水鱼类最高饵料利用率达９５．２％，饵料系统１．８７－４．０２。海水鱼类和淡水鱼类混喂试验表明，对海水鱼类的摄食率６８．９％，淡水鱼类是６０．８％。从试验得出结论：在沿海地区用低值的海产鱼类代替淡水水生动物喂养大鲵，大鲵生长快，饵料系数低，经济效益明显。

AN EXPERIMENT ON FOOD HABITS CHANGE OF ANDRIAS DAVIAUS

In order to raise Andrias davinus in the coastal cities,we have tamed Andrias davianus to change its habits from fresh water fistes and shrimps to marine fishes Andrias daviaus tenbs to eat more marine fishes, and grows faster after the food habits hava been changed.The food utilization ratio can reach 90.2%.Avorage food conversion ratio can be down to 2.25 Therefore, we can use marina fishes as the food for Andrias davianus to replace fresh water fishes in coastal on the purpose to low the feeding costs.