There were 5 levels of zinc bacitracin compound mixture: 300 mg/kg,50 mg/kg,70 mg/kg,100 mg/kg,each mixed with 100 mg/kg Vc.

In order to study the effects of different levels of sulfate colistin and antibiotics on the growth performance of early weaned piglets,the control group was fed with basal ration + sulfate colistin(20 mg/kg),all the experiment groups were fed with additional additives of flavomycin(6 mg/kg),zinc bacitracine(30 mg/kg) and nosiheptide(5 mg/kg) based on the feeds for the control group respectively.

In order to make clear how assay methods and solvents affect the assay results of Zinc Bacitracine, the diffent assay methods in operation are compared .

The Influence of bacitracin Zinc and Olaquindox on Broilers Performance;

Purifying and Decoloring Method of Bacitracin Zinc;

Contrasting groupis fed with basic proportion grain ration and the groups for experiment are fed with the basic pro-portion grain ration with bacitracin zinc (240mg/kg) 2% and 3% probiotics, and then compare the per-formance of the broilers for experiment.

Effectsof oral adm inistration of com plex live bacterialpreparation on im m unityof suckling piglets;

To investigate the effect of compound oligopeptide on growth performance and serum related parameters of weaning pigs,120 piglets of 31-day old were randomly allotted to 4 groups,each group with 3 replicates of 10 piglets per replicate.