alexa Prevalence of Tick-borne Pathogens in Co-grazed Dairy Bovines Differs by Region and Host-type in Tamil Nadu, India
ISSN: 2329-888X

Advances in Dairy Research
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Research Article

Prevalence of Tick-borne Pathogens in Co-grazed Dairy Bovines Differs by Region and Host-type in Tamil Nadu, India

Ponnudurai G1#, Stephen Larcombe2*#, Velusamy R3, Rani N3, Kolte SW3, Rubinibala B4, Alagesan A4, Rekha B4 and Brian Shiels2

1Department of Veterinary Parasitology, Faculty of Tamil Nadu, Veterinary and Animal Sciences University, Chennai, India

2Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, UK

3Department of Veterinary Parasitology, Faculty of Maharashtra, Animal and Fisheries Sciences University, Nagpur, India

4Department of Veterinary Parasitology, Veterinary College and Research Institute, Namakkal, India

*Corresponding Author:
Stephen Larcombe
Institute of Biodiveristy, Animal Health and Comparative Medicine
University of Glasgow, UK
Tel: +44 (0)141 330 8098
Email: [email protected]

Received date: 21 April, 2017; Accepted date: 11 May, 2017; Published date: 20 May, 2017

Citation: Ponnudurai G, Larcombe S, Velusamy R, Rani N, Kolte SW, et al. (2017) Prevalence of Tick-borne Pathogens in Co-grazed Dairy Bovines Differs by Region and Host-type in Tamil Nadu, India. J Adv Dairy Res 5:177. doi: 10.4172/2329-888X.1000177

Copyright: © 2017 Ponnudurai G, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

#-contributed equally to the work.



In India, disease of cattle caused by tick-borne pathogens (TBP) constrains the rearing of high yielding Bos taurus dairy breeds that often develop clinical, fatal disease. Bos indicus and bufflao show resistance to TBP infection, and this has led to a policy of rearing crossbred indicus-taurus cattle. On dairy farms, co-grazing more resistant animals alongside crossbreeds could contribute positively (by removing potentially infective ticks) or negatively (by acting as a reservoir for infection). We investigated epidemiological factors that contribute to the prevalence of five tick-borne pathogens with links to milk-yield in co-grazed host types in dairy farms of two regions of Tamil Nadu, India; a region of high dairy production importance. A high prevalence of T. annulata and Anaplasma spp. was detected, but with lower prevalence in the Cauvery Delta than in the Northwestern zone. A strict host-type association with prevalence was observed: buffaloes had lower prevalence of TBP than cattle; and native breeds had a lower prevalence of Anaplasma spp. than crossbreeds. The results indicate that while susceptibility to becoming a carrier animal for TBP depends on exposure to ticks; aspects of resistance are determined by host type independent of tick exposure. There was no clear evidence that co-grazing, with more resistant host types, will provide a positive contribution (protective effect) to crossbreeds with greater milk productivity.


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