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Congruence between selection on breeding values and farmers' selection criteria in sheep breeding under conventional nucleus breeding schemes
Designing breeding schemes suitable for smallholder livestock production systems in developing regions has hitherto been a challenge. The suggested schemes either do not address farmers' breeding goals (centralized ...
Risk Factors for Reproductive Disorders and Major Infectious Causes of Abortion in Sheep in the Highlands of Ethiopia
Community-based sheep breeding programs (CBBPs) were established in Ethiopia since 2010. Improved rams from CBBPs need to be disseminated. However, there is a risk of transmitting reproductive diseases to other community ...
Effect of processed sweet lupin (Lupinus angustifolius) grain supplementation on growth performance and socioeconomic feasibility of Doyogena sheep in Ethiopia
Background
The experiment evaluated the effect of supplementing sheep fed natural pasture hay with processed sweet lupin grain on growth performance and its economic feasibility. The finding revealed that use of steamed ...
Relative resistance of Menz and Washera sheep breeds to artificial infection with Haemonchus contortus in the highlands of Ethiopia
The aim of this study was to evaluate the relative resistance of Menz and Washera sheep breeds to artificial infection with Haemonchus contortus. The challenge trial was conducted at the Debre Berhan Agricultural Research ...
Epidemiology of nematode parasites of sheep around Jimma, southwestern Ethiopia
An investigation was made into the epidemiology of nematode infections of sheep in two districts of Jimma zone, southwestern Ethiopia. We used two approaches—long-term monitoring of identified sheep for nematode infection ...
System dynamics modeling in designing breeding schemes: The case of Menz sheep in Ethiopian highlands
A comprehensive dynamic simulation model was developed to describe a community-based breeding program for the Menz sheep population of Ethiopia. Selection of male and female animals based on their own and maternal performance ...
Breeding programmes for smallholder sheep farming systems: II. Optimization of cooperative village breeding schemes
A simulation study was conducted to optimize a cooperative village-based
sheep breeding scheme for Menz sheep of Ethiopia. Genetic gains and
profits were estimated under nine levels of farmers’ participation and
three ...
Growth performances of Washera sheep under smallholder management systems in Yilmanadensa and Quarit districts, Ethiopia
A study was conducted to evaluate growth performances of Washera sheep under smallholder production systems in the Yilmanadensa and Quarit districts of the Amhara National Regional State, Ethiopia. Data were collected and ...
Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes
Village- and central nucleus-based schemes were simulated and evaluated
for their relative bio-economic efficiencies, using Ethiopia’s Menz sheep as
example. The schemes were: village-based 2-tier (Scheme-1) and 1-tier
(Scheme-2) ...
Pulmonary adenomatosis and maedi-visna in Ethiopian central highland sheep: a microscopic study
Microscopic examination of pneumonic lungs of the Ethiopian highland sheep (n = 35) was made and compared with the pneumonic lungs from ten sheep and 66 goats from the lowlands. Lesions compatible with sheep pulmonary ...