Gastrointestinal parasitism in sheep and goats in certain districts of Hyderabad Karnatak region Karnataka state with special reference to anthelmintic resistance

Abstract

The present study was carried out to determine the prevalence of GI parasites and efficacy of commonly used anthelmintics in sheep and goats in Hyderabad-Karnataka region, Karnataka. Faecal samples were collected from sheep (1876) and goats (1745) in H-K region (Bidar, Kalaburgi and Raichur districts), Karnataka for a period of one year to determine the prevalence of gastrointestinal parasitism. Processing of faecal samples by standard faecal floatation and sedimentation techniques revealed an overall prevalence of 65.78 per cent. The rate of prevalence was significantly higher (Plt0.05) in goats (67.9%) when compared to that in sheep (63.8%). The rate of prevalence in Bidar, Kalaburgi and Raichur districts was 68.76, 61.8 and 62.28 per cent respectively, without significant (Pgt0.05) differences in prevalence of GI parasitic infection between districts. The infected small ruminants were parasitized with one or two of eight different species and genera of parasites, each. Out of 3621 faecal samples examined, infection with single parasite (43.94%) was more commonly observed than multiple species infection (21.84%). The most prevalent species were strongyles (27.64%) followed by Eimeria spp. (7.91%), Strongyloides papillosus (3.87%), Trichuris ovis (2.54%), Moniezia spp. (1.02%), amphistomes (0.8%), Buxtonella sulcata (0.11%) and Schistosoma spindale (0.06%). Coproculture studies indicated predominance of Haemonchus contortus larvae. Statistically there was no significant (Pgt0.05) difference between prevalence of GI parasitic infection and age of animals. The overall prevalence was high in post-weaning lambs and kids (69.61%) than in pre-weaning lambs and kids (68.60%) and adults (60.12%). With regard to the gender of animals, the overall prevalence of GI parasitic infection was significantly (Plt0.01) high in female animals (67.9%) than in males (62.85%). The overall prevalence was significantly (Plt0.001) high in rainy season (69.04) followed by winter (65.63 %) and summer (62.52%). To determine the efficacy of thi