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This study is aimed to characterize progesterone profiles of Menz ewes during gestation with intent to gain insight into applied clinical endocrinology in early pregnancy diagnosis and monitoring of prenatal reproductive wastage. Mean hormone concentrations were basal, but increased and remained ...


Mukasa-Mugerwa, E.Viviani, P.[Progesterone concentrations in peripheral plasma of Menz sheep during gestation and parturition]Progesterone concentrations in peripheral plasma of Menz sheep during gestation and parturition

Ewe reproduction and productivity were studied in the highlands of Ethiopia in Horro and Menz ewes mated to lamb in both the wet and dry seasons from June 1992 to May 1997. The data included a total of 4890 mating records of which 2516 were Menz ewes and 2374 Horro ewes, with 2360 matings in the ...


Mukasa-Mugerwa, E.Anindo, D.O.Sovani, S.Lahlou-Kassi, A.Tembely, S.Rege, J.E.O.Baker, R.L.[Reproductive performance and productivity of Menz and Horro sheep lambing in the wet and dry seasons in the highlands of Ethiopia]Reproductive performance and productivity of Menz and Horro sheep lambing in the wet and dry seasons in the highlands of Ethiopia

Weaner ewe lambs (92 + 4 days, SD) of the Ethiopian Menz breed (n=115) were used to assess the impact of level of nutrition before and after first lambing on subsequent productivity. Lambs were raised either on pasture grazing only (P) or grazing with low (L), medium (M) or high (H) levels of a c...


Mukasa-Mugerwa, E.Negussie, A.Said, A.N.[Effect of post-weaning level of nutrition on the early reproductive performance and productivity indices of Menz sheep]Effect of post-weaning level of nutrition on the early reproductive performance and productivity indices of Menz sheep

This study was undertaken using 48 mature Menz ewes (3-6 years of age) and averaging 31.5 (standard deviation (SD)=4.9) kg body weight, to evaluate oestrus synchronization, conception and lambing rates after ram introduction following a period of isolation (n=24) or constant exposure to vasectomi...


Mukasa-Mugerwa, E.Sovani, S.Toe, F.Lahlou-Kassi, A.[Reproductive responses associated with ram introduction in mature tropical Menz ewes after a period of isolation]Reproductive responses associated with ram introduction in mature tropical Menz ewes after a period of isolation

Measures the duration of the post-partum anoestrus interval of fifty Ethiopian Menz ewes maintained on pasture grazing with uncontrolled mating; describes their associated blood progesterone patterns; and assesses their reproductive potential.


Mukasa-Mugerwa, E.Ezaz, Z.[Resumption of post-partum oestrous behaviour and associated plasma progesterone profiles in Menz ewes]Resumption of post-partum oestrous behaviour and associated plasma progesterone profiles in Menz ewes

Examines the effect of two dosages of PMSG on the onset of estrus and twinning in an African breed of sheep whose estrus was synchronized using either intravaginal progestogen sponge or prostaglandin F2 alph. Table 1 summarises the results of the study. Most ewes (>75 percent) manifested estrus w...


Mutiga, E.R.Mukasa-Mugerwa, E.[Effect of the method of estrus synchronization and PMSG dosage on estrus and twinning in Ethiopian Menz sheep]Effect of the method of estrus synchronization and PMSG dosage on estrus and twinning in Ethiopian Menz sheep

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

Ewe lambs attain puberty at 10 months and 16.9 + 0.01 kg (56 percent of mature weight) and first lamb at 15 months. Postpartum anoestrus in 76 days, lambing interval is 8.4 months and 65 percent of ewes lamb three times in 2 years with a gestation period of 149 days. Ewes cycle year-round but oes...


Mukasa-Mugerwa, E.Lahlou-Kassi, A.[Reproductive performance and productivity of Menz sheep in the Ethiopian highlands]Reproductive performance and productivity of Menz sheep in the Ethiopian highlands

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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