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Discusses factors affecting morbidity and mortality of the Ethiopian highland sheep both on-farm and on-station at Debre Berhan between 1989 and 1990. Primary causes of infections origin resulted in high proportional morbidity (88.4 percent on-farm) and mortality (72.9 percent on-farm and 71.8 pe...


Bekele, T.Wolde-Ab, T.Lahlou-Kassi, A.Sherington, J.[Factors affecting morbidity and mortality on-farm and on-station in the Ethiopian highland sheep]Factors affecting morbidity and mortality on-farm and on-station in the Ethiopian highland sheep

In Africa, sorghum downy mildew (SDM), caused by Peronosclerospora sorghi, infects both sorghum and maize. Systemic infection can result in severe yield loss. The effects of seed treatments and foliar sprays of metalaxyl on the disease were determined on maize in Nigeria (1992) and sorghum in Zim...


Bock, C.H.Jeger, M.J.Cardwell, K.F.Mughogho, L.K.Sherington, J.[Control of sorghum downy mildew of maize and sorghum in Africa]Control of sorghum downy mildew of maize and sorghum in Africa

The effects of trypanosomiasis on digestible organic matter intake, milk yield and composition, dam liveweight changes during lactation and lamb growth rates were investigated at Ibadan, Nigeria 1991/92, using 20 West African Dwarf sheep nursing single lambs. Although digestibility coefficients w...


Akinbamijo, O.O.Reynolds, L.Sherington, J.Nsahlai, I.V.[Effects of postpartum Trypanosoma vivax infection on feed intake, liveweight changes, milk yield and composition in West African Dwarf ewes and associated lamb growth rates]Effects of postpartum Trypanosoma vivax infection on feed intake, liveweight changes, milk yield and composition in West African Dwarf ewes and associated lamb growth rates

The maximum likelihood parameters estimated in logistic analysis are in terms of a transformation of the original response variable and, although inferences are easily made about the sources of variation in the linearized model using standard procedures applied in regression analysis, the varianc...


Rege, J.E.O.Sherington, J.[A method for estimating sampling variances of predicted probabilities from maximum likelihood estimates in logit response function]A method for estimating sampling variances of predicted probabilities from maximum likelihood estimates in logit response function

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

Experiment 1, with rams (17.0 kg initial weight (M), and experiment 2, with steers (203 kg M), involved 2x2 arrangements of treatments to compare the effect of doubling the amount of stover offered (25 or 50 g/kg M daily) and chopping (unchopped or chopped), upon intake, selection and live-weight...


Osafo, E.L.K.Owen, E.Said, A.N.Gill, M.Sherington, J.[Effects of amount offered and chopping on intake and selection of sorghum stover by Ethiopian sheep and cattle]Effects of amount offered and chopping on intake and selection of sorghum stover by Ethiopian sheep and cattle

Poor drainage of Vertisols in the Ethiopian mid-altitude highlands limits farming operations and cropping in the early rainy season. Thus, traditional crops are grown late in the season on the residual moisture in the dry season when waterlogging is less of a problem. Consequently performance of ...


Tedla, A.Sherington, J.Mohamed-Saleem, M.A.[Integration of forage and food crops grown sequentially on Vertisols under rainfed conditions in the mid-altitude Ethiopian highlands]Integration of forage and food crops grown sequentially on Vertisols under rainfed conditions in the mid-altitude Ethiopian highlands

The effect of birth weight on lamb survival, and the role of stage of pregnant ewe supplementation and weight gain during pregnancy, were investigated for 285 Menz ewes that lambed from 334 mated when averaging 22.8+4.6 (SD) kg body weight and 2.3+0.75 condition score. Ewes either only grazed (C)...


Mukasa-Mugerwa, E.Said, A.N.Lahlou-Kassi, A.Sherington, J.Mutiga, E.R.[Birth weight as a risk factor for perinatal lamb mortality, and the effects of stage of pregnant ewe supplementation and gestation weight gain in Ethiopian Menz sheep]Birth weight as a risk factor for perinatal lamb mortality, and the effects of stage of pregnant ewe supplementation and gestation weight gain in Ethiopian Menz sheep

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