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Gastrointestinal and blood parasites of a free grazing flock of sheep in Kaithady farm in the Jaffna District

Authors:

G Kandasamy,

Faculty of Science, University of Peradeniya, Peradeniya, LK
About G
Department of Zoology
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RPVJ Rajapakse,

Faculty of Veterinary Medicine and Animal Sciences, University of Peradeniya, Peradeniya, LK
About RPVJ
Department of Veterinary Pathobiology
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RS Rajakaruna

Faculty of Science, University of Peradeniya, Peradeniya, LK
About RS
Department of Zoology
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Abstract

Parasitism is one of the major economic and health problems affecting sheep industry. The present study determined the prevalence, intensity and the types of gastrointestinal (GI) and blood parasites of sheep at Kaithady farm in the Jaffna District. Fresh faecal samples (~ 5 g) from sheep belonging to a breed known as ‘Jaffna Locals’ were collected in September 2010 (during the dry season) and March 2011 (after the rainy season) and processed by salt floatation, direct saline and iodine smears and sedimentation method. Geimsa stained smears were prepared from the blood samples. Identification of the parasites was based on light microscopic morphology and faecal culture was done to identify strongyles. Seven genera of GI parasites including Haemonchus contortus, Toxocara, Trichuris, Moniezia, Eimeria, Giardia, amphistome eggs and an unidentified strongyle type eggs were recorded. Strongyle infection was the most common (78 %) followed by Eimeria spp. (76 %). Concurrent infections of Eimeria spp. and GI nematodes were common. Although there was no difference in the overall prevalence of GI parasites between the rainy and dry seasons (chi square test; p > 0.05), the intensity of infection was significantly higher in the rainy season (Mann Whitney U test; p < 0.05). Seven types of GI parasites were recorded after the rainy season while only five were found in the dry season. Infections of Moniezia, Giardia and Trichuris were recorded only after the rainy season. A tick-borne haemoparasite, Theileria sp. was found with a very high prevalence of 87 %. Sheep in the Kaithady farm harboured many parasites. Regular and proper administration of anthelmintics would provide an effective strategy in controlling these infections.

J.Natn.Sci.Foundation Sri Lanka 2013 41 (3): 195-201

DOI: http://dx.doi.org/10.4038/jnsfsr.v41i3.6059

How to Cite: Kandasamy, G., Rajapakse, R. and Rajakaruna, R., 2013. Gastrointestinal and blood parasites of a free grazing flock of sheep in Kaithady farm in the Jaffna District. Journal of the National Science Foundation of Sri Lanka, 41(3), pp.195–201. DOI: http://doi.org/10.4038/jnsfsr.v41i3.6059
Published on 16 Sep 2013.
Peer Reviewed

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