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The study was conducted to estimate the economic values (EV) of Begait cattle breeding-objective traits and their effects on the returns to investment in breeding programs using bio-economic model. Production systems were described according to their level of input and sale age, namely, low input...


Mezgebe, GebretnsaeGizaw, SolomonUrge, M.[Economic values of Begait cattle breeding-objective traits under low and medium input production systems in northern Ethiopia]Economic values of Begait cattle breeding-objective traits under low and medium input production systems in northern Ethiopia

Legese, G.Haile, AynalemDuncan, Alan J.Dessie, TadelleGizaw, SolomonRischkowsky, Barbara A.[Sheep and goat value chains in Ethiopia: A synthesis of opportunities and constraints]Sheep and goat value chains in Ethiopia: A synthesis of opportunities and constraints

Tegegne, AzageHoekstra, DirkGebremedhin, BerhanuGizaw, Solomon[History and experiences of hormonal oestrus synchronization and mass insemination of cattle for improved genetics in Ethiopia: From science to developmental impact]History and experiences of hormonal oestrus synchronization and mass insemination of cattle for improved genetics in Ethiopia: From science to developmental impact
Gizaw, SolomonTegegne, Azage[Bio-economic and operational feasibility of introducing oestrus synchronization and artificial insemination in simulated smallholder sheep breeding programmes]Bio-economic and operational feasibility of introducing oestrus synchronization and artificial insemination in simulated smallholder sheep breeding programmes

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 scenarios of controlled breeding achieved in the breeding programme, as well as...


Gizaw, SolomonArendonk, Johan A.M. vanValle-Zárate, A.Haile, AynalemRischkowsky, Barbara A.Dessie, TadelleOkeyo Mwai, Ally[Breeding programmes for smallholder sheep farming systems: II. Optimization of cooperative village breeding schemes]Breeding programmes for smallholder sheep farming systems: II. Optimization of cooperative village breeding schemes

Survival analysis applying proportional hazards models was used to investigate genetic and non-genetic factors affecting ewe longevity and lamb survival of sheep in Ethiopia. Data were obtained from an on-station closed nucleus breeding program of Menz sheep and an on-farm Awassi×Menz sheep cross...


Getachew, T.Gizaw, SolomonWurzinger, MariaHaile, AynalemRischkowsky, Barbara A.Okeyo Mwai, AllySölkner, J.Meszaros, G.[Survival analysis of genetic and non-genetic factors influencing ewe longevity and lamb survival of Ethiopian sheep breeds]Survival analysis of genetic and non-genetic factors influencing ewe longevity and lamb survival of Ethiopian sheep breeds

Pedigree recording and genetic selection in village flocks of smallholder farmers have been deemed infeasible by researchers and development workers. This is mainly due to the difficulty of sire identification under uncontrolled village breeding practices. A cooperative village sheep-breeding sch...


Gizaw, SolomonGoshme, S.Getachew, T.Haile, AynalemRischkowsky, Barbara A.Arendonk, Johan A.M. vanValle-Zárate, A.Dessie, TadelleOkeyo Mwai, Ally[Feasibility of pedigree recording and genetic selection in village sheep flocks of smallholder farmers]Feasibility of pedigree recording and genetic selection in village sheep flocks of smallholder farmers

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) cooperative village breeding schemes, dispersed village-based nucle...


Gizaw, SolomonRischkowsky, Barbara A.Valle-Zárate, A.Haile, AynalemArendonk, Johan A.M. vanOkeyo Mwai, AllyDessie, Tadelle[Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes]Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes

We evaluated the efficiency of selection for body weight in a cooperative village breeding program for Menz sheep of Ethiopia under smallholder farming system. The design of the program involved organizing villagers in a cooperative breeding group to implement selective breeding of their sheep. T...


Gizaw, SolomonGetachew, T.Goshme, S.Valle-Zárate, A.Arendonk, Johan A.M. vanKemp, Stephen J.Okeyo Mwai, AllyDessie, Tadelle[Efficiency of selection for body weight in a cooperative village breeding program of Menz sheep under smallholder farming system]Efficiency of selection for body weight in a cooperative village breeding program of Menz sheep under smallholder farming system

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