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Journal Article 2008

Autor: Kosgey, I.S. Rowlands, G.J. Arendonk, Johan A.M. van Baker, R.L.

A survey was conducted by way of personal interviews with 562 respondents comprising 459 farmers and 103 butchers/traders in selected districts in the central and western parts of Kenya, consisting of three predominantly smallholder and four predominantly pastoral/extensive districts. The study a...

Enlace original: https://cgspace.cgiar.org/handle/10568/33181

Investigación en Agricultura
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Kosgey, I.S. ,  Rowlands, G.J. ,  Arendonk, Johan A.M. van ,  Baker, R.L. ,  [Small ruminant production in smallholder and pastoral/extensive farming systems in Kenya] ,  Small ruminant production in smallholder and pastoral/extensive farming systems in Kenya
Journal Article 2006

Autor: Kosgey, I.S. Baker, R.L. Udo, H.M.J. Arendonk, Johan A.M. van

Despite the large numbers and importance of adapted indigenous sheep and goats in the tropics, information on sustainable conventional breeding programmes for them is scarce and often unavailable. This paper reviews within-breed selection strategies for indigenous small ruminants in the tropics,...

Enlace original: https://cgspace.cgiar.org/handle/10568/33177

Investigación en Agricultura
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Kosgey, I.S. ,  Baker, R.L. ,  Udo, H.M.J. ,  Arendonk, Johan A.M. van ,  [Successes and failures of small ruminant breeding programmes in the tropics: A review] ,  Successes and failures of small ruminant breeding programmes in the tropics: A review
Journal Article 2003

Autor: Waaij, E.H. van der Hanotte, Olivier H. Arendonk, Johan A.M. van Kemp, Stephen J. Kennedy, D. Gibson, John P. Teale, A.J.

Some West African Bos taurus cattle breeds such as the N'Dama and a number of West African Shorthorns are resistant to tsetse fly-transmitted trypanosomosis. The trait is termed trypanotolerance, for which changes in packed red cell volume percent (PCV) and growth rate following infection are ge...

Enlace original: https://cgspace.cgiar.org/handle/10568/29175

Investigación en Agricultura
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Waaij, E.H. van der ,  Hanotte, Olivier H. ,  Arendonk, Johan A.M. van ,  Kemp, Stephen J. ,  Kennedy, D. ,  Gibson, John P. ,  Teale, A.J. ,  [Population parameters for traits defining trypanotolerance in an F2 cross of N'Dama and Boran cattle] ,  Population parameters for traits defining trypanotolerance in an F2 cross of N'Dama and Boran cattle
Journal Article 2001

Autor: Vargas, B. Herrero, Mario T. Arendonk, Johan A.M. van

A dynamic performance model was integrated with a model that optimised culling and insemination policies in dairy herds using dynamic programming. The performance model estimated daily feed intake, milk yield and body weight change of dairy cows on the basis of availability and quality of feed an...

Enlace original: https://cgspace.cgiar.org/handle/10568/29197

Investigación en Agricultura
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Vargas, B. ,  Herrero, Mario T. ,  Arendonk, Johan A.M. van ,  [Interactions between optimal replacement policies and feeding strategies in dairy herds] ,  Interactions between optimal replacement policies and feeding strategies in dairy herds
Journal Article 2008

Autor: Gizaw, Solomon Komen, Hans Hanotte, Olivier H. Arendonk, Johan A.M. van

Ethiopia has a diverse sheep population, numbering 23.6 million, in parallel with its diverse ecology, production systems and communities. A comprehensive phenotypic and genetic characterization of Ethiopian sheep populations was initiated in 2005 to provide a nationwide framework for the managem...

Enlace original: https://cgspace.cgiar.org/handle/10568/70952

Investigación en Agricultura
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Gizaw, Solomon ,  Komen, Hans ,  Hanotte, Olivier H. ,  Arendonk, Johan A.M. van ,  [Indigenous sheep resources of Ethiopia: Types, production systems and farmers preferences] ,  Indigenous sheep resources of Ethiopia: Types, production systems and farmers preferences
Journal Article 2006

Autor: Bosso, N.A. Corr, N. Njie, M. Fall, Abdou Waaij, E.H. van der Arendonk, Johan A.M. van Jaitner, J. Dempfle, L. Agyemang, K.

This paper reviews the successful N’Dama cattle genetic improvement programme implemented in a low input productions system at the International Trypanotolerance Centre (ITC) in 1994, in the Gambia. The first part of the paper presents the genetic improvement programme. The second part deals with...

Enlace original: https://cgspace.cgiar.org/handle/10568/70951

Investigación en Agricultura
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Bosso, N.A. ,  Corr, N. ,  Njie, M. ,  Fall, Abdou ,  Waaij, E.H. van der ,  Arendonk, Johan A.M. van ,  Jaitner, J. ,  Dempfle, L. ,  Agyemang, K. ,  [The N'Dama cattle genetic improvement programme: A review] ,  The N'Dama cattle genetic improvement programme: A review
Journal Article 2001-04-13

Autor: Vargas, B. Herrero, Mario T. Arendonk, Johan A.M. van

A dynamic performance model was integrated with a model that optimised culling and insemination policies in dairy herds using dynamic programming. The performance model estimated daily feed intake, milk yield and body weight change of dairy cows on the basis of availability and quality of feed an...

Enlace original: https://cgspace.cgiar.org/handle/10568/2144

Investigación en Agricultura
Enlace permanente
Vargas, B. ,  Herrero, Mario T. ,  Arendonk, Johan A.M. van ,  [Interactions between optimal culling and insemination policies and feeding strategies in dairy herds] ,  Interactions between optimal culling and insemination policies and feeding strategies in dairy herds
Journal Article 2000

Autor: Kahi, A.K. Thorpe, W.R. Nitter, G. Arendonk, Johan A.M. van Gall, C.F.

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 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/29194

Investigación en Agricultura
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Kahi, A.K. ,  Thorpe, W.R. ,  Nitter, G. ,  Arendonk, Johan A.M. van ,  Gall, C.F. ,  [Economic evaluation of crossbreeding for dairy production in a pasture based production system in Kenya] ,  Economic evaluation of crossbreeding for dairy production in a pasture based production system in Kenya
Journal Article 2004

Autor: Kosgey, I.S. Arendonk, Johan A.M. van Baker, R.L.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/29176

Investigación en Agricultura
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Kosgey, I.S. ,  Arendonk, Johan A.M. van ,  Baker, 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
Journal Article 2005

Autor: Koudande, O.D. Arendonk, Johan A.M. van Iraqi, F.A.

A marker-assisted introgression (MAI) experiment was conducted to use genetic markers to transfer each of the three trypanotolerance QTL from a donor mouse strain, C57BL/6, into a recipient mouse strain, A/J. We used a backcross strategy that consisted of selecting two lines, each carrying two of...

Enlace original: https://cgspace.cgiar.org/handle/10568/29205

Investigación en Agricultura
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Koudande, O.D. ,  Arendonk, Johan A.M. van ,  Iraqi, F.A. ,  [Marker-assisted introgression of trypanotolerance QTL in mice] ,  Marker-assisted introgression of trypanotolerance QTL in mice

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