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Genetic parameters for growth traits in Sabi sheep were estimated using from data records of 4123 lambs from 130 sires and 1131 dams collected between 1984 and 1994. Reproduction traits and lamb survival to weaning were analysed fitting a sire threshold model. The direct additive contribution t...


Matika, O.Wyk, J.B. vanErasmus, G.J.Baker, R.L.[Genetic parameter estimates in Sabi sheep]Genetic parameter estimates in Sabi sheep

The construction of the Rogun Dam in the Amu Darya Basin to increase upstream energy generation creates potential trade-offs with existing downstream irrigation, due to the different timing of energy and irrigation water demands. The present analysis, based on a hydro-economic optimization model,...


Bekchanov, MaksudRingler, ClaudiaBhaduri, AnikJeuland, M.[How would the Rogun Dam affect water and energy scarcity in Central Asia?]How would the Rogun Dam affect water and energy scarcity in Central Asia?

In traditional management systems in the tropics, sheep constitute a source of easily convertible capital for financing purposes and insurance, a means of cultural and ceremonial functions, and a source of prestige, meat, manure and skins. In this study, breeding objectives were derived for an i...


Kosgey, I.S.Arendonk, Johan A.M. vanBaker, R.L.[Economic values for traits in breeding objectives for sheep in the tropics: Impact of tangible and intangible benefits]Economic values for traits in breeding objectives for sheep in the tropics: Impact of tangible and intangible benefits

Growth and feed utilisation potentials of six chicken populations were evaluated at Debre Zeit Agricultural Research Centre, Ethiopia. Five local chicken ecotypes originated from different Agro-ecologies namely, Tilili, Horro, Chefe, Jarso and Tepi were included. In this study, Fayoumi chicken br...


Dessie, TadelleTadesse, M.Peters, Kurt J.[Growth and feed utilization potentials of local chicken ecotypes in Ethiopia]Growth and feed utilization potentials of local chicken ecotypes in Ethiopia

The expression of three putative QTL for upper thermal tolerance (UTT) was examined in two strains of outbred rainbow trout unselected for this trait using simple-sequence repeat (SSR; microsatellite) markers associated with UTT in backcrosses of lines selected on this trait. Two-way diallel lots...


Perry, G.M.L.Danzmann, R.G.Ferguson, M.M.Gibson, John P.[Quantitative trait loci for upper thermal tolerance in outbred strains of rainbow trout (Oncorhynchus mykiss)]Quantitative trait loci for upper thermal tolerance in outbred strains of rainbow trout (Oncorhynchus mykiss)

The impacts of climate change on agriculture may add significantly to the development challenges of ensuring food security and reducing poverty. We show the possible impacts on maize production in Africa and Latin America to 2055, using high-resolution methods to generate characteristic daily wea...


Jones, Peter G.Thornton, Philip K.[The potential impacts of climate change on maize production in Africa and Latin America in 2055]The potential impacts of climate change on maize production in Africa and Latin America in 2055

It has been suggested that African rangelands would be utilized and managed on a more sustainable and profitable basis if they were governed by co-management arrangements, with state governments defining group rights and governing inter-group interactions and local organizations governing interac...


Swallow, B.M.Bromley, D.W.[Co-management or no management: The prospects for internal governance of common property regimes through dynamic contracts]Co-management or no management: The prospects for internal governance of common property regimes through dynamic contracts

As in other countries in southern Africa, foot and mouth disease (FMD) is endemic in certain parts of Zimbabwe inhabited by African buffalo, which harbor the virus. Despite this, Zimbabwe has invested for many years in maintaining freedom from FMD over much of its territory, permitting it to take...


Randolph, Thomas F.Morrison, J.A.Poulton, C.[Evaluating equity impacts of animal disease control: The case of foot and mouth disease in Zimbabwe]Evaluating equity impacts of animal disease control: The case of foot and mouth disease in Zimbabwe

A cross-sectional survey was carried out in Ghinchi farming community, central Ethiopia during October and November 2001 to assess the level of association between children's nutritional status, families' socio-economic gradient, and degree of maternal attention and cognitive development. Ninety ...


Ketema, L.Abate, G.Jabbar, M.A.[Correlates of children's cognitive skills in an agrarian community with mixed crop-livestock production systems, Ghinchi, central Ethiopia]Correlates of children's cognitive skills in an agrarian community with mixed crop-livestock production systems, Ghinchi, central Ethiopia

Five lactation curve models were compared for their fitness to milk data of indigenous and crossbred cows using data from Bako Agricultural Research Center and Debre Zeit Research Station. The fit of the models was compared using the model Rz value. The overall mean RZ value was 81.5 t 0.12% and ...


Gebreyohannes, G.Tegegne, AzageDiedhiou, M.L.Hegde, B.P.[Modeling lactation curve and comparison of models fitness to different lactation data of indigenous and crossbred cows]Modeling lactation curve and comparison of models fitness to different lactation data of indigenous and crossbred cows

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