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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

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

This paper presents the results of a comparative study conducted to characterize the oestrous phenonenon in Zebu and crossbred cattle and to determine oestrus detection using both androgenized cows and entire bulls. The study was conducted at ILRI Debre Zeit Research Station during the dry season...


Tegegne, AzageWitru, G.Mukasa-Mugerwa, E.Kassa, T.[Oestrus phenomenon and oestrus detection efficiency using androgenized cows and entire bulls in Boran and Boran x Friesian crossbred cows]Oestrus phenomenon and oestrus detection efficiency using androgenized cows and entire bulls in Boran and Boran x Friesian crossbred cows

The study investigated the effect of work on the postpartum estrous cycle length and ovarian activity of crossbred dairy cows used for draught. Sixteen dairy cows were assigned to two dietary feeding regimes (i.e. diet 1=9 MJ ME/kg DM; diet 2=10 MJ/kg DM). The cows in both diets started to work a...


Abate, E.Zerbini, E.Yami, A.Mukasa-Mugerwa, E.Gebre-Wold, A.[Effect of draught work on postpartum estrous cycle length in crossbred dairy cows already cycling]Effect of draught work on postpartum estrous cycle length in crossbred dairy cows already cycling

Evaluates the growth performance of calves born to Boran cows and weaned at either six or eight months. Early weaned calves were further divided to either receive supplementary feed until eight months of age or serve as controls. There was no significant differences between Boran and crossbred ca...


Tegegne, AzageMukasa-Mugerwa, E.Ketema, H.[Effect of early weaning on the growth performance of Boran and Boran X Friesian bull calves]Effect of early weaning on the growth performance of Boran and Boran X Friesian bull calves
Tegegne, AzageLahlou-Kassi, A.Mukasa-Mugerwa, E.[The effect of season on superovulatory response, embryo yield and quality in Boran and Boran x Friesian crossbred cows]The effect of season on superovulatory response, embryo yield and quality in Boran and Boran x Friesian crossbred cows

Fourty-four Borana X Friesian F1 crossbred calves born to Borana (Bos indicus) cows were randomly assigned to either suck their dams twice daily or bucket-feeding with 134 l. milk over a 57-day pre-weaning period. Their dams were also allocated either to a supplement group with grass hay ad libit...


Tegegne, AzageOsuji, P.O.Lahlou-Kassi, A.Mukasa-Mugerwa, E.[Effect of dam nutrition and suckling on lactation in Borana cows and growth in their Borana X Friesian crossbred calves in an early weaning system in Ethiopia]Effect of dam nutrition and suckling on lactation in Borana cows and growth in their Borana X Friesian crossbred calves in an early weaning system in Ethiopia

The luteolytic effect of prostaglandin F2á (PGF2á) during the confirmed luteal phase of the oestrous cycle was evaluated in ten Boran and ten Boran x Friesian cross-bred heifers. Following injection with 25mg Lutalyse, animals were bled every 6 h for 96 h and plasma progesterone (P4) determined ...


Mutiga, E.R.Mukasa-Mugerwa, E.Tegegne, Azage[Luteolytic effect of prostaglandin F2X in Boran and Boran X Friesian cross-bred heifers]Luteolytic effect of prostaglandin F2X in Boran and Boran X Friesian cross-bred heifers

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