Evaluating the Resistance of Eimeria Spp. Field Isolates to Anticoccidial Drugs Using Three Different Indices
| Autor: | F Arabkhazaeli, M Modrisanei, S Nabian, B Mansoori, A Madani |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Iranian Journal of Parasitology, Vol 8, Iss 2 (2013) |
| Druh dokumentu: | article |
| ISSN: | 1735-7020 2008-238X |
| Popis: | Background: In this study, the presence of resistance to diclazuril, amprolium+ethopabate and salinomycin, representing some of the commonest anticoccidials in Iran’s poultry industry, against three mixed Eimeria field isolates were investigated. Methods: Three Eimeria field isolates, collected from typical broiler farms in Iran, were propagated once, inoculated to 480 broilers, comprising 30 chicks in each treatment. The non-medicated or medicated diets containing one of the above mentioned anticoccidials were provided ad-lib. Drug ef-ficacy was determined using the Global index (GI), Anticoccidial Sensitivity Test (AST) and Opti-mum Anticoccidial Activity (OAA). Results: None of the field isolates were fully sensitive to the selected anticoccidials. All isolates showed reduced sensitivity/partial resistance to salinomycin. Resistance to amprolium+ethopabate was evident and partial to complete resistance was recorded for diclazuril. Conclusion: Limited efficacy of the selected anticoccidials is obvious. Considering the cost of conti-nuous use of anticoccidials in the field, altering the prevention strategy and rotation of the anticocci-dials with better efficacy, would prevent further economic losses induced by coccidiosis. |
| Databáze: | Directory of Open Access Journals |
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