alexa Epidemiological Studies on Ovine Lungworm Species in No
ISSN: 2157-7579

Journal of Veterinary Science & Technology
Open Access

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Research Article

Epidemiological Studies on Ovine Lungworm Species in Northern Ethiopia

Andualem Yimer* and Abebe Desie

School of Veterinary Medicine, Wollo University, Dessie, Ethiopia

*Corresponding Author:
Andualem Yimer
Assistant Professor, School of Veterinary Medicine
Wollo University, PO Box 977, Dessie, Ethiopia
Tel: 0338519009
E-mail: [email protected]

Received Date: September 15, 2016; Accepted Date: September 30, 2016; Published Date: October 05, 2016

Citation: Yimer A, Desie A (2016) Epidemiological Studies on Ovine Lungworm Species in Northern Ethiopia. J Vet Sci Technol 7:387. doi: 10.4172/2157- 7579.1000388

Copyright: © 2016 Yimer A, 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.



A cross sectional study was conducted from November, 2015 to April, 2016 to determine the prevalence, associated epidemiological factors and identifying the species of ovine respiratory helminthes circulating in and around Wogera district. Modified Baermann technique was conducted to detect first stage larvae (L1) from 386 randomly sampled sheep kept under extensive and semi intensive management systems. Out of the total 386 faecal samples examined 180 were found to harboring one or more lungworm parasites with an overall prevalence of 46.6% (180/386). Dictyocaulus filarial (D. filaria) was the dominant lungworm species with prevalence of 18.9%, followed by Mulliries capillaries (M. capillaries) 14.2%, Protostrongylus rufescens (P. rufescens) 2.3% and Mixed infection with D. filarial and M. capillaries species (11.1%). In this study, animals with poor body condition (23.1%) were highly infected with significant difference (P<0.05) than medium (14.8%) and good body conditions (8.8%). There was statistical significant difference in susceptibility between different age groups (P<0.05), the young (25.1%) being more affected than adult (22.5%) animals. Significant differences (P<0.05) were found among areas of different altitude with an infection rate of 29% and 17.6% at higher and medium altitude areas respectively. Sheep kept under extensive management system and semi intensive management system also showed statistically significant variation (P<0.05) in infection rate with different lung worm species. The overall results obtained during this investigation showed that D. filaria is the most common lungworm species in its not only high prevalence rate, but also high degree of association with occurrence of clinical respiratory signs. The result of this study indicated that lungworms in sheep are common parasites which induce heavy economic loss that needs greater attention due to its impact on sheep production of the study area.


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