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Efficacy of ِِabamectin in lambs and goats naturally infected with gastrointestinal nematodes in Mosul city

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Author(s): S. D. Hassan

Journal: Iraqi Journal of Veterinary Sciences
ISSN 1607-3894

Volume: 25 (Arabic);
Issue: 1;
Start page: 57;
Date: 2011;
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ABSTRACT
The aim of this study was to evaluate the efficacy of abamectin in lambs and goats naturally infected with gastrointestinal nematodes. The study was conducted on 300 lambs, from both sexes, at age ranged between 6-9 months, and 150 native goats from both sexes, at age ranged between 1-2 years. The total infestation rate with gastrointestinal nematodes were 54% and 53.3% in lambs and goats, respectively. Results of fecal culture for obtained larvae 3 revealed the presence of seven genus of nematodes in that included Marshallagia spp. (66.6%), Ostertagia spp. (53.1%), Haemonchus spp. (24.7%), Nematodirus spp. (16.67%), Strongyloides spp. (9.8%), Cooperia spp. (4.4%), and Oesophagostomum spp. (3.08%), where as in goats the following genus was obtained included Marshellagia spp. (46.3%), Nematodirus spp. (37.5%), Strongyloides spp. (37.5%), Ostertagia spp. (33.7%), Haemonchus spp. (15%), Cooperia spp. (15%), Chabertia spp. (6.25%), and Trichuris spp. (2.5%). The most important clinical signs that were detected in lambs and goats were emaciation, pale mucous membrane, easily detached hair and wool and diarrhea. Abamectin at dose 0.2 mg/kg body weight subcutaneously (single dose) had an efficacy of (97%) in the first week and increased to (100%) to the end of the study, whereas in goats it was (100%) started from 1st week after the treatment to the end of the study period. Treated animals showed gradual improvement in presenting the clinical abnormalities. Total red blood cells count, hemoglobin concentration and packed cell volume were increased significantly. Total white blood cells count and eosinophils were decreased significantly compared with control the group. In conclusion abamectin had a high efficacy in the treatment of gastrointestinal nematodes in lambs and goats.
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