Matching information on animal health and performance aspects was collected from 255 N'dama post-weaners from September 1986 to December 1991. Records covered for each animal a two years period from weaning at 10 months of age until 34 months of age. Curative trypanocidal drug treatment was given...
Wissocq, N.M.
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D'Ieteren, G.D.M.
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Trail, J.C.M.
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Kakiese, O.
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[Quantification of the relative importance of trypanotolerance measurements on productivity of N'Dama cattle (Addendum)]
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Quantification of the relative importance of trypanotolerance measurements on productivity of N'Dama cattle (Addendum)
The incorporation of livestock into alley farming systems, in which food or forage crops are grown between hedges of multipurpose trees that are regularly pruned for mulch and/or forage, has been studied for over 10 years in Africa. Prunings from leguminous trees such as Leucaena and gliricidia c...
Livestock disease is only one of a number of constraints to improving productivity in smallholder systems, and research is only one approach to alleviating that constraint. However, within the correct context, animal health research that alleviates the constraint of disease can bring enormous ben...
Irvin, A.D.
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[A holistic approach to animal health research: Increasing livestock production under disease challenge]
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A holistic approach to animal health research: Increasing livestock production under disease challenge
An approach for combining remote sensing spectral measurements with an ecosystem model was presented in an accompanying article. The sahelian grassland ecosystem STEP model developed for that purpose was also described and validated. In order to fulfill a prerequisite for using coarse resolution ...
Seen, D. lo
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Mougin, E.
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Rambal, S.
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Gaston, A.
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Hiernaux, Pierre H.Y.
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[A regional sahelian grassland model to be coupled with multispectral satellite data. II. Toward the control of its simulations by remotely sensed indices]
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A regional sahelian grassland model to be coupled with multispectral satellite data. II. Toward the control of its simulations by remotely sensed indices
Describes cattle husbandry in the agropastoral system of central Mali, discussing data on the management systems and ownership patterns, herd demography, and productivity including reproductive performance, growth, weight, traction and meat and milk production.
Discusses use of mathematical modelling as a research tool to evaluate alternative practices, illustrating its application in beef cattle production systems in Botswana, with a description of data inputs, model utilized & simulations carried out. Compares actual & simulated values and examines ef...
Cartwright, T.C.
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Anderson, F.M.
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Buck, N.G.
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Nelsen, T.C.
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Trail, J.C.M.
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Pratchett, D.
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Sanders, J.
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Astle, W.
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Light, D.E.
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Rennie, T.W.
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Rose, T.J.
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Shorrock, C.
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[Systems modelling in cattle production - an application in Botswana]
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Systems modelling in cattle production - an application in Botswana
Summarises the impact of trypanosomiasis on development of trypanotolerant livestock. Describes current genetic research being carried out by collaborating national and international organisations in the African Trypanotolerant Livestock Network, and discusses the importance of conserving these g...
Trail, J.C.M.
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D'Ieteren, G.D.M.
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Teale, A.J.
,
[Trypanotolerance and the value of conserving livestock genetic resources]
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Trypanotolerance and the value of conserving livestock genetic resources
An original data set of 31, 661 lactation records of Kenyan Friesian cows covering the period 1968 through 1987 was used to develop part-lactation extension factors for milk yield, and to estimate genetic parameters for production and reproductive traits. Effects of herds and year were significan...
Rege, J.E.O.
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[Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. I. Genetic and phenotypic parameters]
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Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. I. Genetic and phenotypic parameters
The Kenya Livestock Recording Centre progeny testing data base covering the period 1968 through 1987 was used to estimate genetic and phenotypic trends in Friesian cattle for milk yield of all lactations, first lactation milk yield, age at first calving, and calving interval. Annual genetic and p...
Rege, J.E.O.
,
[Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. II. Genetic and phenotypic trends]
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Genetic analysis of reproductive and productive performance of Friesian cattle in Kenya. II. Genetic and phenotypic trends
Reports on lamb mortality and overall productivity in the improved production systems in Cote d'Ivoire; and identifies important factors to be considered in strategies for the improvement of sheep production in the humid zone of West Africa, namely flock, ewe, year of lambing, lambing season and ...
Armbruster, T.
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Peters, Kurt J.
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Hadji-Thomas, A.
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[Sheep production in the humid zone of West Africa. III. Mortality and productivity of sheep in improved production systems in Cote d'Ivoire]
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Sheep production in the humid zone of West Africa. III. Mortality and productivity of sheep in improved production systems in Cote d'Ivoire