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Seré Rabé, CarlosZijpp, A.J. van derPersley, Gabrielle J.Rege, J.E.O.[Dynamics of livestock production systems, drivers of change and prospects for animal genetic resources]Dynamics of livestock production systems, drivers of change and prospects for animal genetic resources

A retrospective case-control study was conducted on 6718 sheep of two breeds (2772 Horro and 3946 Menz) on risk factors for mortality associated with respiratory disease (MARD) in Ethiopia, based on data collected between October 1993 and December 1997. Potential risk factors examined were breed,...


Tibbo, MarkosMukasa-Mugerwa, E.Woldemeskel, M.Rege, J.E.O.[Risk factors for mortality associated with respiratory disease among Menz and Horro sheep in Ethiopia]Risk factors for mortality associated with respiratory disease among Menz and Horro sheep in Ethiopia

A study was carried out at the International Livestock Research Institute (ILRI) Debre Berhan Research Station in Ethiopia from 1992 to 1995 to compare the peri-parturient rise (PPR) in faecal nematode egg counts (FEC) in ewes of two indigenous sheep breeds. A total of 1439 Menz and 1347 Horro ew...


Tembely, S.Lahlou-Kassi, A.Rege, J.E.O.Mukasa-Mugerwa, E.Anindo, D.O.Sovani, S.Baker, R.L.[Breed and season effects on the peri-parturient rise in nematode egg output in indigenous ewes in a cool tropical environment]Breed and season effects on the peri-parturient rise in nematode egg output in indigenous ewes in a cool tropical environment

Serum enzymes were studied in 163 apparently healthy goats from three indigenous goat breeds of Ethiopia. The effect of breed, age, sex and season on alanine aminotransferase (ALT) / glutamic pyruvic transaminase (GPT), aspartate aminotransferase (AST) / glutamic oxalacetic transaminases (GOT), a...


Tibbo, MarkosJibril, Y.Woldemeskel, M.Dawo, F.Aragaw, K.Rege, J.E.O.[Serum enzymes levels and influencing factors in three indigenous Ethiopian goat breeds]Serum enzymes levels and influencing factors in three indigenous Ethiopian goat breeds

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

Hematological parameters were studied in 163 apparently healthy goats comprised of 3 indigenous breeds at Adami-Tulu Agricultural Research Centre (ATARC) and Sheno, Agricultural Research Centre (SARC), Ethiopia. Data were analyzed for the effect of breed, sex, age, and season. Hemoglobin (Hb) was...


Tibbo, MarkosJibril, Y.Woldemeskel, M.Dawo, F.Aragaw, K.Rege, J.E.O.[Factors affecting hematological profiles in three Ethiopian indigenous goat breeds]Factors affecting hematological profiles in three Ethiopian indigenous goat breeds

Serum enzymes were studied in 377 apparently healthy sheep from three indigenous sheep breeds of Ethiopia. The effect of breed, age, sex and season on alanine aminotransferase (ALT)/glutamic pyruvic transaminase (GPT), aspartate aminotransferase (AST)/glutamic oxalacetic transaminase (GOT), alkal...


Tibbo, MarkosWoldemeskel, M.Aragaw, K.Rege, J.E.O.[Serum enzyme levels and influencing factors in three indigenous Ethiopian sheep breeds]Serum enzyme levels and influencing factors in three indigenous Ethiopian sheep breeds

Ruminants adapt to periodic fluctuation in feed resources by accumulating fat stores during favourable periods. Thus, genetic variations, among ruminant genotypes, in the capa city to deposit fat could be exploited through breeding to improve animal productivity in traditional tropical production...


Ermias, E.Yami, A.Rege, J.E.O.[Fat deposition in tropical sheep as adaptive attribute to periodic feed fluctuation]Fat deposition in tropical sheep as adaptive attribute to periodic feed fluctuation

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

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