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...
Tekelye Bekele
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Mukasa-Mugerwa, E.
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Kasali, O.B.
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[The prevalence of cysticercosis and hydatidosis in Ethiopian sheep]
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The prevalence of cysticercosis and hydatidosis in Ethiopian sheep
A breeding soundness examination (BSE) involving animal physical examination, scrotal circumference (SC) and semen evaluation was undertaken on 80 Ile-de-France rams at a government breeding farm, 32 km south-west of Casablanca (Morocco) from March to May 1988. A large percentage of rams (21.4 pe...
Toe, F.
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Lahlou-Kassi, A.
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Mukasa-Mugerwa, E.
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[Semen characteristics of Ile-de-France rams of different age and physical condition]
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Semen characteristics of Ile-de-France rams of different age and physical condition
Compares estrus response, estrus response interval and subsequent pregnancy rate in Bos indicus and Bos indicus X Bos taurus cross cows and heifers following estrus synchronization with prostaglandin F2 (PGF2X (a), a progesterone releasing intravaginal device (PR10) (b), and synchro-mate B (SMB) ...
Tegegne, Azage
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Warnick, A.C.
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Mukasa-Mugerwa, E.
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Ketema, H.
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[Fertility of Bos indicus and Bos indicus X Bos taurus crossbred cattle after estrus synchronization]
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Fertility of Bos indicus and Bos indicus X Bos taurus crossbred cattle after estrus synchronization
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.
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Rege, J.E.O.
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Mukasa-Mugerwa, E.
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Tembely, S.
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Anindo, D.O.
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Baker, R.L.
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Lahlou-Kassi, A.
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[Reproductive characteristics of Ethiopian highland sheeI. Genetic parameters of testicular measurements in ram lambs and relationship with age at puberty in ewe lambs]
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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.
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Toe, F.
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Mukasa-Mugerwa, E.
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Tembely, S.
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Anindo, D.O.
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Baker, R.L.
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Lahlou-Kassi, A.
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[Reproductive characteristics of Ethiopian highland sheep. II. Genetic parameters of semen characteristics and their relationships with testicular measurements in ram lambs]
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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.
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Ezaz, Z.
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[Relationship of testicular growth and size to age, body weight and onset of puberty in Menz ram lambs]
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Relationship of testicular growth and size to age, body weight and onset of puberty in Menz ram lambs
The milk and meat productivity of Ethiopia's 27 million cattle is still low for the human population of 53 million, which grows at 2.9 percent yr and is expected to surpass 65 million at the end of this century. The present cattle population includes 40 percent (10.8 million) cows of breeding age...
Mukasa-Mugerwa, E.
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Tegegne, Azage
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[Reproductive performance in Ethiopian Zebu (Bos indicus) cattle: Constraints and impact on production]
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Reproductive performance in Ethiopian Zebu (Bos indicus) cattle: Constraints and impact on production
The efficiency of cattle breeding and production depends to a large extent on the reproductive performance of the herd, with the bull playing a major role. Large differences in fertilizing ability between bulls exists, and such differences are due to the characteristics of individual bulls rather...
Tegegne, Azage
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Kassa, T.
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Mukasa-Mugerwa, E.
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[Aspects of bull reproduction with emphasis on cattle in Ethiopia. II. Sperm production capacity and semen characteristics]
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Aspects of bull reproduction with emphasis on cattle in Ethiopia. II. Sperm production capacity and semen characteristics
A total of 179 heifers, primiparous and multiparous Boran cows were assigned to four breeding units and mated over a 4 - month breeidng season in a single-sire mating system. Mean body weight and body condition scores at the beginning of mating ranged from 363 + 6 kg to 388 + 7 kg and from 6.7 + ...
Tegegne, Azage
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Entwistle, K.W.
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Mukasa-Mugerwa, E.
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[Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system]
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Factors affecting the reproductive performance of Boran (Bos indicus) cows in a single-sire mating system