Authors:Tekelye Bekele, Tadesse Woldeab, A. Lahlou-Kassi, J. Sherington
Int. Volume 52, Issues 2–3, December 1992, Pages 99–109
Abstract
Factors affecting morbidity and mortality of the Ethiopian highland sheep were studied both on-farm and on-station at Debre Berhan between 1989 and 1990. Primary causes of infectious origin resulted in high proportional morbidity
(88.4% on-farm) and mortality (72.9% on-farm and 71.8% on-station) rates. Nutritional and managemental factors were also responsible for mortalities in lambs. The most frequent secondary causes of morbidity and/or mortality were ectoparasites and nasal myiasis. Health management interventions on-station were not high enough to produce performance improvements above the on-farm levels. However, the occurrence of gastrointestinal parasites significantly (P <0.05) differed between the two management systems. The frequency of some of the major causes of morbidity and mortality such as pneumonia, fasciolasis and enteritis were significantly (P <0.01) affected by season and age of an animal. In order to alleviate the major health constraints identified in this study, a proper health management intervention involving vaccination, strategic anthelmintic treatment and feeding management are suggested.