Browsing by Author "Sertse,Tefera"

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    Investigation on Ectoparasites of Small Ruminants in Selected Sites of Amhara Regional State and there Impact on the Tanning Industry
    (AAU, 1999-12) Sertse,Tefera
    The objectives of this study were to determine the prevalence of ectoparasites on sheep and goats. assess the effect of major ectoparasites on the quality of skin processed in the tanneries and identify the type and magnitude of defects that cause down grading and rejection in pickled sheep and wet blue goat pelts. The study was carried out through questionnaire survey, clinical examination and analysis of pickled and wet blue skin defects in Kombolcha and Dessei tanneries. 0 ut of 7 52 sheep and 752 goals examined 50.5% of s heep and 56.4% of goats were found infested with one or more ectoparasites. The major cctoparasitcs identified on sheep were D ovis (38.5%), A{ 0\,;'1115 (12.5%), tick infestations (3.4%) and Linog"athus spp. (2.4%). The major ectoparasites recorded on goats were Lillogllarlws spp, (28,3%), ticks (22.2%), sarcoplic mange (6.1 %) and Ctenocephalides spp (8.1 %). In sheep, there was significant difference (pO.05) was detected in prevalence of sarcoptic mange and Ctenocephalides spp. In goats, the risk of sarcoptic mange infestation in lowland (Odds ratio (OR) =4.6, p0.05) was recorded in prevalence of all ectoparasites except D. ovis infestation by age. D. ovis was found to affect more significantly (p<0.05) the adults (42.2%) than the young (29.9%) sheep. Analysis of body condition showed no significant varia tion (p>O.05) to ectoparasite infestation in sheep. However, poor body condition goats \'-'ere 4.3 times at risk from sa rcoptic mange (OR=4.3, p