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Plasma progesterone concentrations were determined every 10 days for 38 grazing Menz ewe lambs from weaning until conception. Lambs were either fed extra supplementry concentrates and/or drenched for endoparasites. Inadequate nutrition delayed puberty onset by 4 to 5 months. Progesterone concentr...


Mukasa-Mugerwa, E.Mutiga, E.R.[Peripubertal plasma progesterone patterns in Ethiopian Menze ewe lambs]Peripubertal plasma progesterone patterns in Ethiopian Menze ewe lambs

The paper reports on accidental urea toxicity in lambs associated with group feeding of urea-molasses block (UMB). The feeding method, the estimated toxic dose, and the incident of toxicity are described. The clinical signs, treatment, outcome, and gross pathological findings are discussed. The d...


Tibbo, MarkosAmare, H.Haile, AynalemMukasa-Mugerwa, E.[Urea toxicity associated with urea-molasses block feeding in lambs in the central highland of Ethiopia]Urea toxicity associated with urea-molasses block feeding in lambs in the central highland of Ethiopia

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 sheeI. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs]Reproductive characteristics of Ethiopian highland sheeI. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs

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

Describes a method for determining the sex and milk protein genotypes (RELPs) of preimplantation stage bovine embryos using multiplex polymerase chain reaction (PCR). Tests a procedure developed for diagnosing multiple characteristics by genotyping K-casein and B-lactoglobulin in addition to iden...


Mukasa-Mugerwa, E.Ezaz, Z.[Relationship of testicular growth and size to age, body weight and onset of puberty in Menz ram lambs]Relationship of testicular growth and size to age, body weight and onset of puberty in Menz ram lambs

The effect of dietary protein supplementation on the resistance of lambs to endoparasites was examined in Horro and Menz lambs artificially infected with Haemonchus contortus. The experimental design involved 2 breeds, 2 infection treatments (infected Vs non-infected) and 3 nutrition treatments. ...


Haile, AynalemTembely, S.Baker, R.L.Anindo, D.O.Mukasa-Mugerwa, E.Rege, J.E.O.Yami, A.[Effect of dietary protein supplementation on the resistance of lambs to artificial infection with haemonchus contortus - preliminary results]Effect of dietary protein supplementation on the resistance of lambs to artificial infection with haemonchus contortus - preliminary results

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

The effect of birth weight on lamb survival, and the role of stage of pregnant ewe supplementation and weight gain during pregnancy, were investigated for 285 Menz ewes that lambed from 334 mated when averaging 22.8+4.6 (SD) kg body weight and 2.3+0.75 condition score. Ewes either only grazed (C)...


Mukasa-Mugerwa, E.Said, A.N.Lahlou-Kassi, A.Sherington, J.Mutiga, E.R.[Birth weight as a risk factor for perinatal lamb mortality, and the effects of stage of pregnant ewe supplementation and gestation weight gain in Ethiopian Menz sheep]Birth weight as a risk factor for perinatal lamb mortality, and the effects of stage of pregnant ewe supplementation and gestation weight gain in Ethiopian Menz sheep

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