脱脂乳粉是牛乳经脱脂加工干燥而成,含有大量的无氮浸出物和蛋白质,生产中主要用作幼龄畜禽日粮中。( )
查看答案
食盐易引起猪禽中毒,雏鸡0.7%,产蛋鸡1%引起饮水增多,粪便变稀,产蛋率下降。( )
A. 对
B. 错
小苏打添加0.5%~2%可调节瘤胃pH,防止精料型饲粮引起代谢性疾病,与氧化镁配合使用效果更佳,夏季添加0.5%可减缓热应激。( )
A. 对
B. 错
生产中一般不常用单独补磷的饲料,多通过补充饲料级磷酸氢钙或骨粉补磷( )。
A. 对
B. 错
What are the basic principles of unity for writing an essay?
A. Begin writing with a controlling idea.
B. Develop your major supporting ideas for the controlling idea.
C. Anything that is not closely related should be included.
D. The theme can jump from subject to subject.
微信支付 
支付宝支付