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Forty-five Bos indicus (Zebu) cows were blocked by body condition (BC) score at calving and allocated by body weight (BW) to three treatments: untreated controls (CON), and progesterone-releasing intra-vaginal device (PRID)-treated at either 45 (T45) or 60 days (T60) post partum. Cows were given ...


Mukasa-Mugerwa, E.Anindo, D.O.Lahlou-Kassi, A.Umunna, N.N.Tegegne, Azage[Effect of body condition and energy utilization on the length of post-partum anoestrus in PRID - treated and untreated post-partum Bos indicus (Zebu) cattle]Effect of body condition and energy utilization on the length of post-partum anoestrus in PRID - treated and untreated post-partum Bos indicus (Zebu) cattle

Presents results of a data collected over a 10-year period on 1,778 service intervals in 1,111 Arsi (Bos indicus) cows at the Ethiopian Ministry of Agriculture ranch to analyse conception rate at first service, interval between services in animals returning for insemination, the number of short c...


Mukasa-Mugerwa, E.Tegegne, AzageTeklu, Y.[Characterization of service intervals and frequency of short oestrus cycles in Zebu (Bos indicus) cows in Ethiopia]Characterization of service intervals and frequency of short oestrus cycles in Zebu (Bos indicus) cows in Ethiopia

Assesses the effect of cow-calf association and continuous suckling on the resumption of oestral activity; and monitors the temporal patterns of plasma progesterone during the post-partum period in grazing Ethiopian Small East African Zebu cows under uncontrolled mating.


Mukasa-Mugerwa, E.Tegegne, AzageFranceschini, R.[Influence of suckling and continuous cow-calf association on the resumption of post-partum ovarian function in Bos indicus cows monitored by plasma progesterone profiles]Influence of suckling and continuous cow-calf association on the resumption of post-partum ovarian function in Bos indicus cows monitored by plasma progesterone profiles

Presents the results of a study designed to characterize further the temporal patterns of oestrus onset and plasma progesterone profiles during the postpartum ovarian activitity in two groups of Ethiopian Bos indicus (Zebu) cows whose calves were either weaned at 4.5 months or at 7.5 months; repo...


Mukasa-Mugerwa, E.Tegegne, AzageKetema, H.[Patterns of postpartum oestrus onset and associated plasma progesterone profiles in Bos indicus cows in Ethiopia]Patterns of postpartum oestrus onset and associated plasma progesterone profiles in Bos indicus cows in Ethiopia

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

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

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

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

This work was conducted to assist the large cattle multiplication centres to produce more animals of the genotype being demanded to improve peasant farm income, to generate an alternative way of introducing the same genotype to farmers with limited income by using artificial insemination, to assi...


Mukasa-Mugerwa, E.[Technological improvement of Zebu cattle breeding efficiency]Technological improvement of Zebu cattle breeding efficiency

The effect of trypanosomosis on the resumption of postpartum ovarian function and oestrus activity was studied in small East African zebu cows maintained under natural trypanosomosis challenge. This was done through the determination of milk progesterone levels using the enzyme linked immunosor...


Tibbo, MarkosMukasa-Mugerwa, E.Abebe, G.Mulatu, W.[Effect of trypanosomosis on the resumption of postpartum ovarian function and oestrus activity in Zebu cows]Effect of trypanosomosis on the resumption of postpartum ovarian function and oestrus activity in Zebu cows

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