Sensitivity Test on Precocious Line of Eimeria acervulina and Its Parent Strain to Eight Anticoccidial Drugs

[Objective] The study aimed to discuss the sensitivity of a precocious line of Eimeria acervulina and its parent strain to the conventional anticoccidial drugs.[Method] Eight kinds of anticoccidial drugs including diclazuril,robenidine,dinitolmide,decoquinate,nicarbazin,maduramicin,salinomycin and lasalocidt were selected to make to test in chicken and the comprehensive evaluation was conducted on base of the 4 indexes including the percent of optimum anticoccidial activity(POAA),reduction of lesion scores(RLS),relative oocyst production(ROP) and anticoc cidial index(ACI).[Result] The precocious line of E.acervulina and its parent strain were completely sensitive to diclazuril,robenidine,decoquinate,nicarbazin,maduramicin and lasalocid,partly sensitive to salinomycin and not sensitive to dinitolmide.[Conclusion] The Eimeria strains with same genetic background had equal sensitivity to the drug..