ANTICOCCIDIAL EFFICACY OF DICLAZURIL COMBINED WITH AMPROLIUM AND LEVAMISOLE AGAINST Eimeria tenella

The efficacy of cmbined Diclazuril with Amprolium and Levamisole against Eimeria tenella was conducted out in this trial.The dosages of Diclzuril,Amprolium and Levamisole were designed as 6 groups by even design.Each bird was infected with 1×10~5 sporulated oocysts of E.tenella at the age of 15 days and the birds of test groups were fed with drugs 2 days prior to infection.Anticoccidial efficacy was evaluated by anticoccidial index(ACI),weight gain,oocysts per gram feces,lesion scores and mortality.The result showed that the most effective combination was 5 mg/kg Diclazuril,240 mg/kg Amprolium and 1.5 mg/kg Levamisole,which its ACI、lesion score and chicken survival rate was(181.97)、15.5 and 100% respectively;The single Diclzuril(2 mg/kg) was ineffective,for its ACI,lesion score and chicken survival rate was(79.35)、34 and 65% respectively.It suggested that Diclazuril combinating with Amprolium and Levamisole properly could enhance the efficacy.