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Autor: Black, J.G.

A genetic study of the grading-up of the East African zebu to the Indian Sahiwal has been undertaken on records, covering about 25 years, from three livestock Improvement Centres in Kenya. It appears from this study that the indigenous East African zebu cow has only about half the genetic potenti...


Black, J.G.[A genetic study of the Sahiwal grading-up scheme in Kenya]A genetic study of the Sahiwal grading-up scheme in Kenya
Autor: Lethola, L.L.

The productive performances of Tswana and Boer goats, and Dorper sheep were investigated. Comparative performance on productivity per ewe/doe and young mortality in pure Tswana and Boer goats and Dorper sheep in Botswana were examined. The local breeds were superior for use in communal areas prac...


Lethola, L.L.[Improving small ruminant productivity: Genetic resources]Improving small ruminant productivity: Genetic resources

A crossbreeding experiment was carried out between two local strains of Mandarah (MN) and Matrouh (MA) chicken. Thirty-four sires and 400 dams from each strain were used to produce four genetic groups. Body weights of 3067 chicks at hatch (BW0), 4 (BW4), 8 (BW8), 12 (BW12) and 16 (BW16) weeks of ...


Iraqui, M.M.Hanafi, M.S.Khalil, M.H.El-Labban, A.F.Ell-Sisy, M.[Genetic evaluation of growth traits in a crossbreeding experiment involving two local strains of chickens using multi-trait animal model]Genetic evaluation of growth traits in a crossbreeding experiment involving two local strains of chickens using multi-trait animal model

Compares influence of various feeding systems on meat production from Brahman x Fulani crossbreeds and indigenous breeds of zebu cattle at the Wakwa research station, Cameroon. The response to intensive fattening was better for the crossbred steers (Brahman x Fulani) than for the local breed (Ful...


Lhoste, P.Dumas, R.[Embouche intensive des zebus de l'Adamoua. 1. Comparaison de differents systems d'alimentation (1970)]Embouche intensive des zebus de l'Adamoua. 1. Comparaison de differents systems d'alimentation (1970)

Summarises the work that ILCA is doing to assemble what information is available on livestock breeds and breeding in sub-Saharan Africa.


Brumby, P.J.Trail, J.C.M.[Les etudes sur les races et la productivite du betail en Afrique]Les etudes sur les races et la productivite du betail en Afrique

In a trial whereby a large number of cows were needed to calve at approximately the same time, opportunity was taken to establish a crossbred cow population at the International Trypanotolerance (ITC). A slight improvement in the traditional husbandry system revealed a great productivity potentia...


Diack, A.Sanyang, F.BCorr, N.[Survival, growth and reproductive performance in F1 crossbred cattle produced and managed on station in the Gambia]Survival, growth and reproductive performance in F1 crossbred cattle produced and managed on station in the Gambia

Menz sheep are indigenous to the highlands of Ethiopia, and highly valued for their meat and wool production. The area is characterized as a low input mixed barley-sheep production system. In 1998, a selection experiment was setup to evaluate the response of Menz. sheep to selection for yearling ...


Solomon G.Sisay L.Hans K.Arendonk, Johan A.M. van[Estimates of genetic parameters and genetic trends for live weight and fleece traits in Menz sheep]Estimates of genetic parameters and genetic trends for live weight and fleece traits in Menz sheep

There is growing interest in the environmental benefits of grazing by cattle, yet little information is available regarding the levels of production that might be achieved on semi-natural rough grazing (SNRG). The overall aim of this research was to assess the performance of native and ‘improved’...


Fraser, M.D.Davies, D.A.Vale, J.E.Nute, G.R.Hallett, K.G.Richardson, R.I.Wright, Iain A.[Performance and meat quality of native and continental cross steers grazing improved upland pasture or semi-natural rough grazing]Performance and meat quality of native and continental cross steers grazing improved upland pasture or semi-natural rough grazing
Kemp, Stephen J.Spooner, R.L.Teale, A.J.[A comparative study of major histocompatibility complex antigens in East African and European cattle breeds]A comparative study of major histocompatibility complex antigens in East African and European cattle breeds

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