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A study was conducted to investigate the effect of season on, and to estimate heritabilities of, and genetic correlations among, semen and spermatozoa characteristics and the relationship of these characteristics with measures of testicular or scrotal size in 6-, 9- and 12-month old ram lambs of ...


Rege, J.E.O.Toe, F.Mukasa-Mugerwa, E.Tembely, S.Anindo, D.O.Baker, R.L.Lahlou-Kassi, A.[Reproductive characteristics of Ethiopian highland sheep. II. Genetic parameters of semen characteristics and their relationships with testicular measurements in ram lambs]Reproductive characteristics of Ethiopian highland sheep. II. Genetic parameters of semen characteristics and their relationships with testicular measurements in ram lambs

A serological survey was carried out in the central highlands of Ethiopia to investigate the significance of maedi-visna on sheep reared in two types of management, on-station and on-farm. A total of 349 serum samples were collected in January 1996 from ILRI Debre Berhan station (n=203) and adjac...


Ayelet, G.Roger, F.Tibbo, MarkosTembely, S.[Survey of maedi-visna (MV) in Ethiopian highland sheep]Survey of maedi-visna (MV) in Ethiopian highland sheep
Autor: Tembely, S.

Sheep and goats are a major source of income (cash) and food protein for rural farmers in most part of the tropics. In spite of the numerical importance of small ruminants in Ethiopia, their productivity is still low due to poor management, diseases and indaequate nutrition. Direct and indirect l...


Tembely, S.[Small ruminant production in Ethiopia: Prospects for improving productivity]Small ruminant production in Ethiopia: Prospects for improving productivity

Genetic resistance to artificially acquired gastrointestinal parasites was studied in 49 Horro and 103 Menz breeds of Ethiopia. The experimental design involved 2 breeds, 2 infection treatments (Infected vs Non infected) and 3 dietary protein treatments using 152 lambs assigned to the 12 treatmen...


Haile, AynalemTembely, S.Anindo, D.O.Rege, J.E.O.Mukasa-Mugerwa, E.Yami, A.Baker, R.L.[Genetic resistance to gastrointestinal parasites in artificially infected Horro and Menz Ethiopian sheep breeds]Genetic resistance to gastrointestinal parasites in artificially infected Horro and Menz Ethiopian sheep breeds

The paper briefly reviews the epidemiology and control of helminth parasites of small ruminants of economic importance in the tropics. Epidemiological factors influencing seasonal availability and acquisition of nematiode larvae and metacercaria by sheep and goats on pasture are discussed. The pa...


Tembely, S.Hansen, James[Helminth diseases of small ruminants in the tropics: A review of epidemiology and control strategies]Helminth diseases of small ruminants in the tropics: A review of epidemiology and control strategies

Research in Kenya has confirmed that Red Maasai sheep are more resistant to gastrointestinal parasites than Dorper sheep and has shown that Small East African goats are more resistant than Galla goats. There is no difference in resistance between the Menz and Horro sheep breeds in Ethiopia. Herit...


Baker, R.L.Rege, J.E.O.Tembely, S.Mukasa-Mugerwa, E.Anindo, D.O.Mwamachi, D.M.Thorpe, W.R.Lahlou-Kassi, A.[Genetic resistance to gastrointestinal nematode parasites in some indigenous breeds of sheep and goats in East Africa]Genetic resistance to gastrointestinal nematode parasites in some indigenous breeds of sheep and goats in East Africa

Data collected on 3256 lambs born to Horro and Menz breed ewes single-sire mated to 71 rams at the International Livestock research Institute (ILRI) Debre Berhan station between September 1992 and June 1996 were analysed for rates of survival and growth from birth to weaning. A significantly lowe...


Mukasa-Mugerwa, E.Lahlou-Kassi, A.Anindo, D.O.Rege, J.E.O.Tembely, S.Tibbo, MarkosBaker, R.L.[Between and within breed variation in lamb survival and the risk factors associated with major causes of mortality in indigenous Horro and menz sheep in Ethiopia]Between and within breed variation in lamb survival and the risk factors associated with major causes of mortality in indigenous Horro and menz sheep in Ethiopia

The effect of urea-molasses feed-supplement blocks (MUB) on feed utilisation and the inclusion of anthelmintic medication into the blocks at strategic times to control nematode parasites was studied in lambs grazed on low quality tropical pasture. 120 Menz ram lambs of 5-7 months of age were divi...


Anindo, D.O.Toe, F.Tembely, S.Mukasa-Mugerwa, E.Lahlou-Kassi, A.Sovani, S.[Effect of molasses-urea-block (MUB) on dry matter intake, growth, reproductive performance and control of gastrointestinal nematode infection of grazing Menz ram lambs]Effect of molasses-urea-block (MUB) on dry matter intake, growth, reproductive performance and control of gastrointestinal nematode infection of grazing Menz ram lambs

Formulation of cost-effective preventive control programmes for helminth infection in small ruminants should be based on sound epidemiological knowledge of the time relationship between contamination of pastures and the seasonal availability of infective larvae in a given geographic area. Epidemi...


Tembely, S.Lahlou-Kassi, A.Sovani, S.Rege, J.E.O.Baker, R.L.Mukasa-Mugerwa, E.[Small ruminant management practices and control of helminthosis under traditional production systems in the cool Ethiopian highlands]Small ruminant management practices and control of helminthosis under traditional production systems in the cool Ethiopian highlands

A study was conducted to estimate heritabilities of, and genetic correlations among, body weight (WT) and testicular measurements - scrotal circumference (SC), testicular diameter (TD), testicular length (TL) and epididymal diameter (ED - in ram lambs between 6, 9 and 12 months old, and relations...


Toe, F.Rege, J.E.O.Mukasa-Mugerwa, E.Tembely, S.Anindo, D.O.Baker, R.L.Lahlou-Kassi, A.[Reproductive characteristics of Ethiopian highland sheep. I. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs]Reproductive characteristics of Ethiopian highland sheep. I. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs

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