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In order to characterise the dairy production systems as well as the productive and reproductive performance of dairy cows in the study area, a total of 256 and 54 dairy farms were used for survey and monitoring data collection, respectively. Based on breed, land size, feed and market accessibili...


Alemayehu, Y.A.Wurzinger, MariaTegegne, AzageZollitsch, W.[Performance and limitation of two dairy production systems in the North western Ethiopian highlands]Performance and limitation of two dairy production systems in the North western Ethiopian highlands
Zerbini, E.Gemeda, T.Tegegne, AzageGebre-Wold, A.Franceschini, R.[Effects of work and diet on progesterone secretion, short luteal phases and ovulations without estrus in postpartum F1 crossbred dairy cows]Effects of work and diet on progesterone secretion, short luteal phases and ovulations without estrus in postpartum F1 crossbred dairy cows

This study tested the hypothesis that purebred Boran (Bos indicus) cows and crossbreds of Boran and Holstein respond differently to long-term changes of feeding level in nutrient partitioning to milk and body fat stores. A total of 27 cows of these two genotypes were subjected either to a low or ...


Jenet, A.Fernández Rivera, S.Tegegne, AzageWettstein, H.R.Senn, M.Saurer, M.Langhans, W.Kreuzer, M.[Evidence for different nutrient partitioning in Boran (Bos indicus) and Boran x Holstein cows when re-allocated from low to high or from high to low feeding level]Evidence for different nutrient partitioning in Boran (Bos indicus) and Boran x Holstein cows when re-allocated from low to high or from high to low feeding level

The research was conducted at the International Livestock Research Institute's Debre Zeit Research Station in Ethiopia. Leucaena pallida 14203, Sesbania sesban 1198 and Lablab purpureus were grown, harvested and dried at the research station. Seventy individually penned Menz ewes with a mean ini...


Melaku, S.Peters, Kurt J.Tegegne, Azage[Feed intake, live weight gain and reproductive performance of Menz ewes supplemented with Lablab purpureus, graded levels of Leucaena pallida 14203 and Sesbania sesban 1198]Feed intake, live weight gain and reproductive performance of Menz ewes supplemented with Lablab purpureus, graded levels of Leucaena pallida 14203 and Sesbania sesban 1198

A study was conducted to evaluate the effect of supplementing levels of Leucaena leucocephala leaves on reproductive capacity and growth of male highland sheep (Arsi type) in Debre Zeit Research Centre. Animals were randomly allotted to one of five experimental rations. In treatment 1 (NS) animal...


Dana, N.Shenkoru, T.Tegegne, Azage[Growth rates and testicular characteristics of Ethiopian highland sheep offered chickpea haulm supplemented with incremental levels of Leucaena leucocephala leaf hay]Growth rates and testicular characteristics of Ethiopian highland sheep offered chickpea haulm supplemented with incremental levels of Leucaena leucocephala leaf hay

The major clinical diseases of crossbred dairy herds were investigated for two years in a milk shed in Addis Ababa. Animals in 38 herds were randomly selected and visited weekly. Diagnosis of diseases and causes of death were based on clinical observation. Disease conditions were categorized into...


Lema, M.Kassa, T.Tegegne, Azage[Clinically manifested major health problems of crossbred dairy herds in Urban and Periurban production systems in the central highlands of Ethiopia]Clinically manifested major health problems of crossbred dairy herds in Urban and Periurban production systems in the central highlands of Ethiopia

Small East African Zebu cows which calved during the dry season were used to determine the effects of postpartum nutritional supplementation and suckling intensity on body weight, body condition score, reproductive performance and on calf mortality and preweaning growth performance. Cows were all...


Tegegne, AzageEntwistle, K.W.Mukasa-Mugerwa, E.[Effects of supplementary feeding and suckling intensity on postpartum reproductive performance of small East African Zebu cows]Effects of supplementary feeding and suckling intensity on postpartum reproductive performance of small East African Zebu cows

Postpartum ovarian activity was investigated in dairy cows in urban/peri urban dairy production systems in and around Addis Ababa using milk progesterone profiles. Nineteen crossbred (Friesian x Zebu) dairy cows which calved between March and June 1998 were used for the study. Milk samples were c...


Mekasha, YosephTegegne, AzageYami, A.Umunna, N.N.[Characterisation of postpartum ovarian activities using milk progesterone profiles in dairy cows in urban/peri-urban dairy production systems]Characterisation of postpartum ovarian activities using milk progesterone profiles in dairy cows in urban/peri-urban dairy production systems

The study was conducted to evaluate the reproduction efficiency of zebu and crossbred cows measured by the inter-estrus and inter-service intervals using data from Bako Agricultural Research Center. The overall mean inter-estrus and inter-service intervals were 44.3 t 0.85 and 49.1 t 1.24 days, r...


Gebreyohannes, G.Tegegne, AzageDiedhiou, M.L.Hegde, B.P.[Reproduction efficiency of Zebu and crossbred cows as measured by the inter-estrus and inter-service intervals at Bako]Reproduction efficiency of Zebu and crossbred cows as measured by the inter-estrus and inter-service intervals at Bako

Thirty-six crossbred cows were used in a 2 X 2 factorial arrangement in a randomized block design to evaluate forages from two cropping systems (1 and 2) and feeding levels (ad libitum, (Level1)) or 80 percent of ad libitum (Level 2) on milk yield, live weight, and reproductive performance. Crops...


Crosse, A.Umunna, N.N.Osuji, P.O.Tegegne, AzageKhalili, H.Tedla, A.[Comparative yield and nutritive value of forages from two cereal-legume based cropping systems. 2. Milk production and reproductive performance of crossbred dairy cows]Comparative yield and nutritive value of forages from two cereal-legume based cropping systems. 2. Milk production and reproductive performance of crossbred dairy cows

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