Study on Prevalence of Ginematodes In Indigenous Bonga Sheep Breed at Three Selected Agro Ecologies of Kafa and Bench Maji Zones
No Thumbnail Available
Date
2011-06-01
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
The current study was conducted to determine the prevalence of Gastro-intestinal nematodes of
indigenous Bonga sheep breed in three sellected districts of Kafa and Bench maji zones of
Southern Region from September 20 I 0 to April 2011. Cross sectional study fo prevalence r
detenrunation using post mortem and fecal examination and longitudinal prospective study for
characterization of the partial seasonal dynamics of nematodes was carried out in this study. A total
of 60 animals were subjected to post mortem examinations and 2304 fecal samples were analyzed
using standard coprological techniques (flotation and modified McMaster fecal worm egg counts).
Questionnaire survey was conducted in randomly selected 6 PA's and 60 households from three
districts. Results from coprological examination revealed the overall prevalence of nematodes in
Bonga sheep were 96.7%. During post mortem examination, four nematode species (Haemonchus
contortus, 76.8%), (Oesophagostomum colombianum, 43.3%), (Bunostomum trigonocephalul1l,
30%) and (Trichostrongylus axei 25%), were identified. Fecal examination results in all study sites
from population of Bonga sheep during the two sampling periods (early rainy and late dry
seasones) indicated significant differences (p<0.05) in mean egg count per gram of feaces. About
90 % of Bonga sheep had EPG value 50-800 the remaining had 801-1200. Polyparasitism
predominated in all study areas varying from 100% in Adiokaka, and 95% in North bench and 95%
in Gimbo districts. Absence of veterinary services and lack of helminthes control strategies were
believed to be responsible for such higher worm prevalence in the areas. These findings indicate
that nematode parasites are a serious treat to the existing small ruminant population and livestock
productivity at large in these study districts and require an immediate professional intervention
Description
Keywords
Egg per Gram, Gastro-intestinal, Nematodse, Species, Small ruminants, Prevalence