4Morehouse N fand Baron RR.Coccidiosis: Evaluation of coccidiostats of mortality,weight gains and fecal scores[J].Exp Parasitol,1970,28,25-29.
5Johnson J and Reid WM.Anticoccidial drugs:Leision scoring techniques in battery and floor-pan experiments with chickens[J].Exp Parasitol,1970,28,30-36.