Antibiotics have been used in animal feeding for long history.Inrecent years ,much attention has been received for their negative effects on animal and human be
Effect of hydropuinone (HQ) on rumen urease acivity was studied. Hydroquinone at concentration of 0. 01 mg· L-1 , 1 mg· L-1and 10 mg · L-1 inhibited urease o
The experimental random error and desired valuse of non-observed points in dynamic indexes were estimated by establishing the linear regression equations about