National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present study was planned to know the status of anthelmintic resistance in gastrointestinal (GI) nematodes of two organized sheep and one goat farms of sub-Himalayan region of northern India using faecal egg count reduction test (FECRT). Three anthelmintics, fenbendazole (FBZ), tetramisole HCl (TMS) and ivermectin (IVM) of benzimidazole, imidazothiazole and macrocyclic lactone groups, respectively were tested at each farm. Resistance was detected against FBZ and TMS in all selected farms with FECRT% ranging from -170 to 63 and 18 to 91, respectively. However, GI nematodes were found susceptible to IVM in all farms with FECRT% ranging from 97 to 100. Pre-treatment coproculture revealed Haemonchus contortus as the predominant GI nematode followed by Oesophagostomum columbianum and Trichostrongylus colubriformis. Besides this, the larvae of Ostertagia spp. were also recorded in sheep of Kedarkatha farm. Post-coproculture results revealed the presence of 100% percent larvae of H. contortus only in animals treated with FBZ and TMS. This is the first report of Haemonchus being resistant to both FBZ and TMS at organized farms simultaneously from sub-Himalayan region of northern India.
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