饲用杂交高粱和苏丹草饲喂草鱼研究

A study on grass fish fed by Sorghum sudanense and Hunnigreen forage Sorghum

在高温高湿条件下 ,饲用杂交高粱和苏丹草长势良好。饲用杂交高粱在株高 1.0～ 1.5m高时鲜草产量可达 375 0 0 kg/ hm2 ,茎叶比为 1:0 .92 ,可利用产量为 1776 7.5 kg/ hm2 。苏丹草鲜草产量为 185 0 0 kg/ hm2 ,茎叶比为 1∶ 0 .4 0 ,可利用鲜草产量 74 0 0 kg/ hm2 。草鱼对饲用杂交高粱和苏丹草的采食率分别为 36 .5 6 %和 34.5 2 % ,摄食量分别为 6 .14 g/天条和 6 .4 5g/天条。试验证明 HCN对草鱼无毒副作用 。

Both sudangrass and Hunnigreen forage Sorghum grow very well under the conditions of high temperature and high humidity. The results showed that HCN was poisonless to grass fish, and the HCN content was decreased by plant height.