1.Hardness measurement operation method: adjust the hardness meter, select samples, measure and read, and finally find the average value of ten samples.2.Influence of crushing process: the finer the r...

1. Correctly select the storage location: the feed storage warehouse should be high, dry, cool, well ventilated and easy to drain. The surrounding walls and the ground should be plastered with cement....

According to the scale of breeding and the need for pollution prevention and control, the necessary facilities that need to be built in breeding farms are as follows:1.Build corresponding livestock an...