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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

Forty F1 crossbred dairy cows, 20 Friesian x Boran and 20 Simmental x Boran, in a 2 x 2 factorial arrangement (non working-non supplemented, non working-supplemented, working-non supplemented, and working-supplemented) were used to study the effect of work and diet supplementation on roughage int...


Zerbini, E.Gemeda, T.Gebre-Wold, A.Demissie, D.[Effect of work and diet on dry matter intake, feed digestibility and nitrogen balance of F1 crossbred cows used for draught]Effect of work and diet on dry matter intake, feed digestibility and nitrogen balance of F1 crossbred cows used for draught

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, Boran and Arsi indigenous cows have been crossbred with Friesian and, or, Jersey sires in an attempt to increase milk production, especially in the Highlands (Kiwawa et al., 1983; Beyene, 1984). However, significant increase in milk production from crossbred cows have been constraine...


Mamo, S.Zerbini, E.Yami, A.[Feeding management of crossbred dairy cows in the central Ethiopian highlands]Feeding management of crossbred dairy cows in the central Ethiopian highlands

Draught animals are the main integrative links between crop and livestock production systems in the highlands of Ethiopia. The highlands comprise only 40% of the country's total land area but carry 79% of livestock heads and 80% of the human population results in higher pressure on the arable lan...


Alemayehu, M.Zerbini, E.Yami, A.[Draught work efficiency of F1 crossbred dairy cows and the Ethiopian highland Zebu oxen under smallholder farming context]Draught work efficiency of F1 crossbred dairy cows and the Ethiopian highland Zebu oxen under smallholder farming context

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

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

Bioassay of acaricide resistance on three common cattle tick species was conducted at the Institute of Agricultural Research, Holetta Research Centre by using standardized FAO Acaricide Resistance Test Methods. Larval progeny of Boophilus decoloratus, Rhipicephalus evertsi evertsi and Amblyomma v...


Shiferaw, Y.Girma, A.Jobre, Y.Hailemariam, M.Zerbini, E.[Bioassay of acaricide resistance on three common cattle tick species around Holetta area]Bioassay of acaricide resistance on three common cattle tick species around Holetta area

Smallholder whole-farm productivity could be increased, and a more sustainable farming system could be established, if dairy cows could also be used for draught work. On-station results over a three-year period indicated that when dairy-draught cows were adequately fed, milk production was not si...


Zerbini, E.Shapiro, Barry I.Larsen, C.E.S.Gebre-Wold, A.[Dairy-draught cows performance and implications for adoption]Dairy-draught cows performance and implications for adoption

In this paper genomic research is discussed with regard to prospects for improving livestock productivity. Topics of discussion include, constraints to livestock productivity in developing countries; biotechnology research at ILRI; improvement of rumen fermentation; livestock genetic resources an...


Nene, VishvanathMorzaria, S.P.Baker, L.Odonyo, A.Rege, J.E.O.Zerbini, E.Bishop, Richard P.[Genomics research: Prospects for improving livestock productivity]Genomics research: Prospects for improving livestock productivity

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