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Year : 2008
Tome : 159
Volume : 8-9
Pages : 450-454
Title : Part I: Ectoparasite prevalences in sheep and in goats in and around Wolaita soddo, Southern Ethiopia
Authors : H. T. YACOB, T. A. YALEW, A. A. DINKA
Summary : The study was conducted during the period between November 2006 to May 2007 to identify ectoparasites and to determine their prevalence in small ruminants in and around Wolaita Soddo (Southern Ethiopia). A total of 214 sheep and 102 goats of both sexes (169 females and 147 males) divided in young and adult animals (72 and 244 respectively) were examined for the presence of ectoparasites or skin lesions. The overall ectoparasite prevalence was 55.7% (147 infested sheep and 29 infested goats) and sheep were significantly more often infected than goats. Within the sheep population, the ectoparasite frequency was significantly higher in females than in males. The main ectoparasites identified in this geographic area were ticks (Rhipicephalus, Boophilus and Amblyomma) and fleas (Ctenocephales felis and canis at a lesser extend). The tick infestation was significantly more frequently observed in sheep (31.78%) than in goats (18.63%) and was unaffected by the sex or the age. By contrast, the flea prevalence was similar in the 2 ruminant populations, the females (particularly in goats) or the young animals (particular in sheep) being significantly less resistant to the flea infestation. Only one case of mange (Demodex caprae) was diagnosed in a goat and pediculosis (Damalinia ovis) was only observed in sheep with a relative high frequency (25.70%). Although these results emphasize the relative higher resistance of goats compared to sheep towards ectoparasites and the low tick prevalence in Southern Ethiopia whereas the pediculosis infection rate would considerably vary according to the climatic conditions during the experimental period, this study demonstrates that ectoparasites greatly affect ruminant health and require an urgent control intervention.
Keywords : Ectoparasites, prevalence, sheep, goat, Wolaita Soddo, Ethiopia
Correspondence : A. A. DINKA
Adress : Faculty of Veterinary Medicine, Addis Ababa University, P.O.Box 34, Debre Zeit, ETHIOPIA. E-mail : dinka_ayana@yahoo.com
Link : pdf

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