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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

Results of a study conducted to determine the conception rates of Boran cattle following artificial insemination of different times from the onset of induced oestrus compared with artificial insemination following natural oestrus.


Mukasa-Mugerwa, E.Tegegne, AzageWarnick, A.C.[Time of artificial insemination and pregnancy rates in Boran (Bos indicus) cattle]Time of artificial insemination and pregnancy rates in Boran (Bos indicus) cattle

Analyses data by analysis of variance to determine seasonal effects on reproductive capacity using the General Linear Models (GLM) procedures of the SAS Programme (SAS, 1987). Body weight was used as a covariate. Polynomial regression analysis was done to determine relationships between body and ...


Tegegne, AzageEntwistle, K.W.Mukasa-Mugerwa, E.[Seasonal influences on gonadal and extragonadal sperm reserves in Small East African Zebu (Bos indicus) bulls in Ethiopia]Seasonal influences on gonadal and extragonadal sperm reserves in Small East African Zebu (Bos indicus) bulls in Ethiopia

Plasma progesterone profiles were used to monitor post-partum reproductive activity in 12 Small East African Zebu (Bos indicus) cows allocated to either supplementary or no supplementary feeding (control) with continious or restricted (twice daily) suckling regimes. Intact bulls were used for bre...


Tegegne, AzageEntwistle, K.W.Mukasa-Mugerwa, E.[Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows]Plasma progesterone and blood metabolite profiles in post-partum small East African Zebu cows

Examines milk production during early, middle and late phases of lactation in indigenous (Bos indicus) Arsi and Zebu cattle and their crosses with Jersey and Friesians. Analyses milk yield, lactation persistency and milk secretion coefficients.


Kiwuwa, G.H.Getachew WorkuMukasa-Mugerwa, E.[Persistency and milk secretion coefficients of the indigenous and crossbred cattle at Asela, Ethiopia]Persistency and milk secretion coefficients of the indigenous and crossbred cattle at Asela, Ethiopia

Gondal and extragonadal sperm reserves were determined in testicular and epididymal tissues obtained from ten Small East African Zebu (SEAZ), ten unimproved Borana and nine improved Boran bulls. Bulls were mature and were between 6 and 8 years of age. Body weight and scrotal circumference differe...


Tegegne, AzageMukasa-Mugerwa, E.Entwistle, K.W.[Genotype differences in gonadal and extragonadal sperm reserves in mature Zebu bulls in Ethiopia]Genotype differences in gonadal and extragonadal sperm reserves in mature Zebu bulls in Ethiopia

A study undertaken to characterise the oestrous cycle in Zebu cows following oestrous induction with PGF (Prostaglandin F2alpha) and examines the function of the subsequently formed CL (corpus luteum) by monitoring levels of peripheral plasma progesterone.


Mukasa-Mugerwa, E.Tegegne, AzageMattoni, M.Cecchini, G.[Effect of oestrous synchronization with prostaglandin F2alpha in Ethiopian highland Zebu (Bos indicus) cows]Effect of oestrous synchronization with prostaglandin F2alpha in Ethiopian highland Zebu (Bos indicus) cows

A total of 64 bull calves, composed of 27 Boran and 37 Boran X Friesian, were weaned at 6 months of age and divided into supplement or control groups within breed. All bulls were kept in one paddock and grazed on natural pasture. Supplement groups received 1.5 kg per head day of a diet containing...


Tegegne, AzageEntwistle, K.W.Mukasa-Mugerwa, E.[Gonadal and extragonadal sperm reserves and testicular histometric characteristics in Zebu and crossbred bulls: Effect of dry season nutritional supplementation]Gonadal and extragonadal sperm reserves and testicular histometric characteristics in Zebu and crossbred bulls: Effect of dry season nutritional supplementation

Discusses the progress of a research project underway at Debre Berhan ILCA station carried out to study the effect of dietary supplementation and endo-parasitic control on the reproductive and productive performance of Menz-type sheep.


Ezaz, Z.Kasali, O.B.Little, D.A.Mukasa-Mugerwa, E.Brokken, R.F.Akalework, N.[Effect of dietary supplementation and endoparasitic control on the reproductive and productive performance of Menz-type sheep]Effect of dietary supplementation and endoparasitic control on the reproductive and productive performance of Menz-type sheep

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