Variance components and genetic parameters were estimated for growth traits: birth weight (BWT), weaning weight (WWT), six-month weight (6MWT) and yearling weight (YWT) in indigenous Ethiopian Horro lambs using the Average Information REML (AIREML). Four different models: Sire model (Model 1),...
Abegaz, S.
,
Negussie, E.
,
Duguma, G.
,
Rege, J.E.O.
,
[Variance components and estimates of genetic parameters for early growth traits in Horro sheep]
,
Variance components and estimates of genetic parameters for early growth traits in Horro sheep
There are distinct breeds suitable for diverse purposes in the different production environments or ecological zones. Farmers in different production systems have different trait preferences and the strategies followed by them are also as diverse as the agro-environments within which they operate...
Duguma, G.
,
Mirkena, T.
,
Haile, Aynalem
,
Iñiguez, L.
,
Okeyo Mwai, Ally
,
Tibbo, Markos
,
Rischkowsky, Barbara A.
,
Sölkner, J.
,
Wurzinger, Maria
,
[Participatory approaches to investigate breeding objectives of livestock keepers]
,
Participatory approaches to investigate breeding objectives of livestock keepers
Conception, lambing rate and litter size were studied on data from a flock of Horro sheep in Ethiopia from 1878 to 1997. The CATMOD and GLM procedures of SAS were used for the analysis of these traits. A sire, direct additive genetic and a repeatability animal model were employed to obtain estim...
Abegaz, S.
,
Duguma, G.
,
Negussie, E.
,
Gelmesa, U.
,
Terefe, F.
,
Rege, J.E.O.
,
[Factors affecting reproductive performance and estimates of genetic parameters of litter size in Horro sheep]
,
Factors affecting reproductive performance and estimates of genetic parameters of litter size in Horro sheep
Factors affecting the early growth and survival of indigenous Ethiopian Horro sheep were identified and the influence of each was assessed, based on data collected from 1978 97 from 4031 lambs at Bako Research Centre, Ethiopia. Year of birth, sex, type of birth or rearing, and parity had signific...
Abegaz, S.
,
Duguma, G.
,
Gelmesa, U.
,
Terefe, F.
,
Negussie, E.
,
Rege, J.E.O.
,
[Non-genetic factors affecting early growth traits and survival in Horro sheep]
,
Non-genetic factors affecting early growth traits and survival in Horro sheep
Variance components and genetic parameters were estimated for growth traits: birth weight (BWT), weaning weight (WWT), 6-month weight (6MWT) and yearling weight (YWT) in indigenous Ethiopian Horro sheep using the average information REML (AIREML). Four different models: sire model (Model 1), dire...
Abegaz, S.
,
Negussie, E.
,
Duguma, G.
,
Rege, J.E.O.
,
[Genetic parameter estimates for growth traits in Horro sheep]
,
Genetic parameter estimates for growth traits in Horro sheep
The effect of environmental factors on preweaning survival rate of Arsi-Bale and Borana kids at the Adami Tulu Agricultural Research Center, was investigated. Data collected on 702 kids born between 1999 and 2003 were used to evaluate the effect of year, parity, breed type, sex, season of birth, ...
Hailu, D.
,
Mieso, G.
,
Alemayehu, N.
,
Dawo, F.
,
Duguma, G.
,
[The effect of environmental factors on preweaning survival rate of Borana and Arsi-Bale kids]
,
The effect of environmental factors on preweaning survival rate of Borana and Arsi-Bale kids
Identification of breeding objective traits pertinent to specific production environments with the involvement of target beneficiaries is crucial to the success of a breed improvement program. A choice experiment was conducted in four locations representing different production systems and agro-e...
Duguma, G.
,
Mirkena, T.
,
Haile, Aynalem
,
Okeyo Mwai, Ally
,
Tibbo, Markos
,
Rischkowsky, Barbara A.
,
Sölkner, J.
,
Wurzinger, Maria
,
[Identification of smallholder farmers and pastoralists’ preferences for sheep breeding traits: choice model approach]
,
Identification of smallholder farmers and pastoralists’ preferences for sheep breeding traits: choice model approach
This review summarizes available information on genetics of adaptation in major livestock species focusing on small ruminants. Adaptation to humans and consequences of domestication on predator aversion, mechanisms of adaptation to available feed and water resources, severe climates and genetic e...
Mirkena, T.
,
Duguma, G.
,
Haile, Aynalem
,
Tibbo, Markos
,
Okeyo Mwai, Ally
,
Wurzinger, Maria
,
Sölkner, J.
,
[Genetics of adaptation in domestic farm animals: a review]
,
Genetics of adaptation in domestic farm animals: a review
A bio-economic model was adapted to estimate economic values for important traits of two Ethiopian indigenous sheep breeds, the Menz and Horro breeds. To do so, a meat sheep herd for fattening lambs and rearing young replacement sheep was simulated. Traits included in the analysis were: daily gai...
Gebre, K.T.
,
Fuerst-Waltl, B.
,
Wurzinger, Maria
,
Philipsson, J.
,
Duguma, G.
,
Mirkena, T.
,
Haile, Aynalem
,
Sölkner, J.
,
[Estimates of economic values for important traits of two indigenous Ethiopian sheep breeds]
,
Estimates of economic values for important traits of two indigenous Ethiopian sheep breeds
Jembere, T.
,
Haile, Aynalem
,
Abegaz, S.
,
Duguma, G.
,
Dessie, Tadelle
,
[Estimation of genetic parameters for growth traits at various ages in Horro sheep at Bako Agricultural Research Center]
,
Estimation of genetic parameters for growth traits at various ages in Horro sheep at Bako Agricultural Research Center