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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

Post-partum reproductive function of 50 F1 crossbred (Boran X Friesian) cows under smallholder farms around Holetta were monitored using plasma progesterone concentrations and profiles to examine Ovarian activity of cows and accuracy of estrus detection. Experimental cows were observed for signs ...


Dawo, F.Zerbini, E.[Post-partum reproductive function of F1 crossbred cows under smallholder management conditions in central highland of Ethiopia]Post-partum reproductive function of F1 crossbred cows under smallholder management conditions in central highland of Ethiopia

Forty pregnant crossbred cows (20 Holstein-Friesian X Boran and 20 Simmental X Boran) were assigned to a 2x2 (work X diet) factorial experiment as follows: supplemented-non-working (SNW), supplemented-working (SW), non-supplemented-non-working (NSNW) and non-supplemented-working (NSW). Working co...


Zerbini, E.Gemeda, T.Franceschini, R.Sherington, J.Gebre-Wold, A.[Reproductive performance of F1 crossbred dairy cows used for draught: Effect of work and diet supplementation]Reproductive performance of F1 crossbred dairy cows used for draught: Effect of work and diet supplementation

This study examined whether a prolonged anoestrus had any long-term effect on subsequent fertility of cows and estimated the relationship between repletion and resumption of reproductive activity. Twelve low body-condition, non-milking, non-cycling (depletion state) F1 crossbred dairy cows (Fries...


Zerbini, E.Gebre-Wold, A.Gemeda, T.[Effect of dietary repletion on reproductive activity in cows after a long anoestrous period]Effect of dietary repletion on reproductive activity in cows after a long anoestrous period

Twelve non-milking, non-cycling F1 crossbred dairy cows (Friesian x Boran and Simmental x Boran) in low body weight and body condition were stratified to 2 diets according to parity, body weight, body condition score and calving intervals to estimate time necessary to resume reproductive activity...


Zerbini, E.Gebre-Wold, A.Gemeda, T.Demissie, D.[Effect of supplementation of depleted, non-milking, non-cycling F1 crossbred cows on time of repletion and resumption of reproductive activity]Effect of supplementation of depleted, non-milking, non-cycling F1 crossbred cows on time of repletion and resumption of reproductive activity

To test the feasibility of the use of dairy cows for draft the International Livestock Research Institute (ILRI) and the Institute of Agricultural Research (IAR) in Ethiopia have studied a herd of F1 Friesien x Boran crossbred cows on-station over three years together with on-farm experiments an...


Zerbini, E.Gebre-Wold, A.Shapiro, Barry I.[The potential of cow traction in the East African highlands]The potential of cow traction in the East African highlands

Based on the promising results obtained from on-station, the cow traction study was further taken to on-farm for verification under the Ethiopian smallholder farmers management conditions. The study was undertaken in Holetta area between 1992 and 1996 by involving 14 farmers. Mean dairy milk yiel...


Alemayehu, M.Gebre-Wold, A.Tegegne, AzageZerbini, E.Larsen, C.[Dairy-draft on-farm performance of crossbred cows in Holetta area]Dairy-draft on-farm performance of crossbred cows in Holetta area

The results of the research showed that hay intake was 10 percent greater in working compared to non working cows. Cows responded to underfeeding by a progressive adaptation until a new equilibrium between dietary supply and requirements was reached. However, in draught cows fed low quality rough...


Zerbini, E.Gemeda, T.[Effect of work on dry matter intake, milk production and reproduction of multipurpose cows fed low quality roughage]Effect of work on dry matter intake, milk production and reproduction of multipurpose cows fed low quality roughage

In Ethiopia, the use of crossbred cows for traction could improve total on-farm production by decreasing the need to maintain draft oxen year-round and a fallower herd to supply replacement oxen, provided that lactation and reproduction are kept at levels comparable to non-working cows. In a stud...


Zerbini, E.Gemeda, T.Gebre-Wold, A.Astatke, A.[Effect of draft work on lactation of F1 crossbred dairy cows]Effect of draft work on lactation of F1 crossbred dairy cows

Production performance of cows is an important factor which determines whether cows are adopted for draft power. Working cows could perform at higher levels of efficiency than oxen, but only if nutrient inputs are adequate to meet their greater requirements, and milk production and reproduction a...


Zerbini, E.Gebre-Wold, A.Shapiro, Barry I.[Development of cow traction technologies and implications for adoption in the East African highlands]Development of cow traction technologies and implications for adoption in the East African highlands

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