Question:   query regarding some chicken 
Answer: isinfect the farm with suitable disinfect the farm  before introducing the new batch , periodic antibiotic , liver tonic , vitamine b complex ,poultry booster , growyh promoter shoud be use to getoptimum growth & weight & production  besides different vaccination [ like -ranikhet , ibd, crd, fowl pox , infactious coryza , egg drop syndrome  etc --by  following the vaccination schedule ]