三聚氰胺对绵羊瘤胃发酵性能的影响

本试验选取4只安装有永久性瘤胃瘘管雄性东北细毛羊，体重35 kg左右。试验采用4×4拉丁方试验设计，对照组饲喂基础日粮，处理组在基础日粮中各添加500、750、1000 mg/kg精料的三聚氰胺。试验分4期，每期7 d预试期，2 d采样期，中间过渡期为7 d。在采样期，收集晨饲后0、2、4、6、8 h的瘤胃液，测定瘤胃液的pH、NH3-N、VFA。结果表明，各处理组之间的pH、NH3-N、VFA均无显著差异（P＞0.05），说明日粮中添加500、750、1000 mg/kg精料的三聚氰胺对瘤胃发酵性能没有影响。

Effect of Melamine on Rumen Fermentation in Sheep

In this experiment, four healthy northeast sheeps were selected, which had no significant difference in body condition, the experimental design used 4×4 Latin square to evaluate the effect of the rumen performance fermentation which was treated by the melamine. The 4 treatments were fed respectively with basal diet and basal diet supplemented with 500,750 and 1000 mg/kg melamine. The trial lasted for 42 d. The results showed that, with the amount of melamine added to test increasing, there was no significant difference in the value of pH,NH3-N,VFA between the treatment groups（P＞0.05）.