2008•Journal of Northwest A&F UniversityRequires access
Studies on drug resistance of Eimeria tenella Qinhuangdao strain to seven anticoccidial drugs
Li PeiGuo
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Abstract
【Objective】 The drug resistances of Eimeria tenella Qinhuangdao strain to seven anticoccidial drugs such as Keqiufen,Amprolium,Maduramicin,Ruiguanqiu,Jinsante,Qiudi and Nicarbazin were tested.【Method】 The experiment contained 7 medicated groups,one infected and non-medicated group(positive group)and one non-infected and non-medicated group(negative group).Based on the criteria of the percentage of optimum anticoccidial activity(POAA),reduction of lesion scores(RLS),relative oocyst production(ROP) and anticoccidial index(ACI),the drug resistances of Eimeria tenella Qinhuangdao strain were detected.【Result】 The results revealed that,the strains were light resistant to Maduramicin,Nicarbazin and Amprolium,middle resistant to keqiufen,Ruiguanqiu and Jinsante,but strong resistant to Qiudi.【Conclusion】 It is concluded that Maduramicin,Nicarbazin and Amprolium can be used in Qinhuangdao effectively,keqiufen,Ruiguanqiu and Jinsante should be used prudently,Qiudi should be reduced or paused to use at present