The aim of the current simulation study was to maximise the amount (kg) of high value meat arising from surplus males and females per kilogram of the goat population and, maximise weight gains to turnoff age. Subsequently, the study aimed to decrease turnoff age, maximisation of reproduction rate...
Mbuku, S.M.
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Okeyo Mwai, Ally
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Kosgey, I.S.
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Kahi, A.K.
,
[Optimum crossbreeding systems for goats in low-input livestock production system in Kenya]
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Optimum crossbreeding systems for goats in low-input livestock production system in Kenya
Ojango, Julie M.K.
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Panandam, J.M.
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Bhuiyan, A.K.F.H.
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Khan, M.S.
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Kahi, A.K.
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Imbayarwo-Chikosi, V.E.
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Halimani, T.E.
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Kosgey, I.S.
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Okeyo Mwai, Ally
,
[Higher education in animal breeding in developing countries - challenges and opportunities]
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Higher education in animal breeding in developing countries - challenges and opportunities
Ensuring that locally adopted breeds are a functional part of production systems is the most national and sustainable way to conserve animal genetic resources. This can only be possible if sustainable breeding strategies for such animals are developed which take into account their economically im...
Kahi, A.K.
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Rege, J.E.O.
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[African cattle genetic resources: Their unique attributes and conservation through utilization for milk production]
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African cattle genetic resources: Their unique attributes and conservation through utilization for milk production
Data on accumulated life performance of crosses of Ayrshire (A), Brown Swiss (B), Friesian (F) and Sahiwal (S) cattle collected over a 21- years period from a dairy ranch in the lowland tropics of Kenya were analysed to estimate additive and non-additive genetic effects of economic traits. These ...
Kahi, A.K.
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Thorpe, W.R.
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Nitter, G.
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Arendonk, Johan A.M. van
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Gall, C.F.
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[Economic evaluation of crossbreeding for dairy production in a pasture based production system in Kenya]
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Economic evaluation of crossbreeding for dairy production in a pasture based production system in Kenya
his study evaluated alternative breeding objectives and schemes for crossbred goats in a village/ community breeding program. A single-tier breeding structure was assumed in the optimisation of this breeding program. Considered were two selection schemes; within-group (WG) and across-groups (AG),...
Bett, R.C.
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Okeyo Mwai, Ally
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Kosgey, I.S.
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Kahi, A.K.
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Peters, Kurt J.
,
[Evaluation of alternative selection objectives and schemes for optimisation of village goat improvement programs]
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Evaluation of alternative selection objectives and schemes for optimisation of village goat improvement programs
This study estimated economic values (EVs) for disease resistance traits for dairy/crossbred goats in Kenya. The traits mean somatic cell count (SCC, cells/μl) and faecal worm egg count (FEC, epg) were taken as indicator traits for the most prevalent diseases in the smallholder farms i.e., mastit...
Bett, R.C.
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Gicheha, M.G.
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Kosgey, I.S.
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Kahi, A.K.
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Peters, Kurt J.
,
[Economic values for disease resistance traits in dairy goat production systems in Kenya]
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Economic values for disease resistance traits in dairy goat production systems in Kenya
The objective of this study was to define breeding objectives and consequently determine optimum crossbreeding levels for goats in the smallholder production systems. Profits and economic values (EVs) were estimated for four genotypes namely (a) original stock or local goat breeds with 0% German ...
Bett, R.C.
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Kosgey, I.S.
,
Kahi, A.K.
,
Peters, Kurt J.
,
[Definition of breeding objectives and optimum crossbreeding levels for goats in the smallholder production systems]
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Definition of breeding objectives and optimum crossbreeding levels for goats in the smallholder production systems
A total of 1443 records of preweaning traits of calves in a dairy herd in coastal lowland Kenya were used to estimate crossbreeding parameters in a regression analysis. In this herd, the Ayrshire (A), Brown Swiss (B) and Sahiwal (S) breeds have been used in a 3-breed rotation crossbreeding system...
Kahi, A.K.
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Thorpe, W.R.
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Baker, R.L.
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[Parameter estimates for additive breed genetic and heterotic effects for preweaning traits of dairy calves in coastal lowland Kenya]
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Parameter estimates for additive breed genetic and heterotic effects for preweaning traits of dairy calves in coastal lowland Kenya
An individual animal model was fitted to data from a crossbred herd in the lowland coastal tropics of Kenya to estimated breed cross means for a total of 25 genotypes having different proportions of Ayrshire (A), Brown Swiss (B), Friesian (F) and Sahiwal (S) genes. These means were then regressed...
Kahi, A.K.
,
Thorpe, W.R.
,
[Estimates of crossbreeding parameters for defining optimal crossbreeding systems for the coastal lowland tropics]
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Estimates of crossbreeding parameters for defining optimal crossbreeding systems for the coastal lowland tropics
A total of 1443 records from a private ranch in the coastal lowland tropics of Kenya were used to estimate the comparative calf performance to weaning of the different crosses of Ayrshire (A), Brown Swiss (B) and Sahiwal (S). Individual and maternal additive and heterotic effects for, and heritab...
Kahi, A.K.
,
[Growth and survival to weaning of crosses of Ayrshire, Brown swiss and Sahiwal cattle.]
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Growth and survival to weaning of crosses of Ayrshire, Brown swiss and Sahiwal cattle.