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  • Title: Anthelmintic resistance in sheep and goat farms on Peninsular Malaysia.
    Author: Chandrawathani P, Adnan M, Waller PJ.
    Journal: Vet Parasitol; 1999 May; 82(4):305-10. PubMed ID: 10384906.
    Abstract:
    The faecal egg count reduction test (FECRT) was conducted on 39 sheep farms and 9 goat farms located in Peninsular Malaysia. The anthelmintic groups used in these tests were the benzimidazoles, levamisole, the benzimidazole/levamisole combination, macrocyclic lactones and closantel. Results indicated that the prevalence of resistance to the benzimidazole group was high, with approximately 50% of the sheep farms and 75% of the goat farms having resistant nematode parasite populations present. Resistance to levamisole, closantel and ivermectin was also detected. Differentiation of the infective larvae derived from faecal cultures indicated that by far the most predominant parasite species was Haemonchus contortus.
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