Determination of Sensitivity of Eimeria acervulina Precocious Strain to Anticoccidials

The study was aimed to explore the sensitivity of Eimeria acervulina(E.acervulina)precocious strain to some common anticoccidials(diclazuril,toltrazuril,sulfamonomethoxine,dinitolmide,decoquinate,nicarbazin,maduramicin,salinomycin and oxytetracycline).The sensitivity of E.acervulinaprecocious strain to 9 kinds anticoccidials was assessed by using4 indices:anticoccidial activity percentage(POAA),reduction of lesion scores(RLS),relative oocyst production(ROP)and anticoccidial index(ACI).The results of these sensitivity trials indicated that the four indices POAA,RLS,ROP and ACI of groups toltrazuril,sulfamonomethoxine,dinitolmide,decoquinate,nicarbazin,salinomycin and oxytetracycline were all negative;the ROP index of diclazuril group was positive,the other three indices were negative.The ROP and ACI indices of maduramicin group were positive,the other two indices were negative.The results showed that the Eimeria acervulina precocious strain was sensitive to diclazuril,toltrazuril,sulfamonomethoxine,dinitolmide,decoquinate,nicarbazin,salinomycin and oxytetracycline,it was partly sensitive to maduramicin.