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Journal Article 2016-01-15

Autor: Wondmeneh, E. Waaij, Liesbeth van der Udo, H.M.J. Dessie, Tadelle Arendonk, Johan A.M. van

A selective breeding program was implemented to improve the performance of indigenous chickens. Improved chicken from the 7th generation were compared with commercial layer, crossbred and unselected indigenous chickens both on-station and on-farm. A total of 870 chickens were used. More than 600 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/69191

Investigación en Agricultura
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Wondmeneh, E. ,  Waaij, Liesbeth van der ,  Udo, H.M.J. ,  Dessie, Tadelle ,  Arendonk, Johan A.M. van ,  [Comparison of different poultry breeds under station and on-farm conditions in Ethiopia] ,  Comparison of different poultry breeds under station and on-farm conditions in Ethiopia
Journal Article 2008

Autor: Koudande, O.D. Thomson, P.C. Bovenhuis, H. Iraqi, F.A. Gibson, John P. Arendonk, Johan A.M. van

A marker-assisted introgression (MAI) experiment was conducted to transfer trypanotolerance quantitative trait loci (QTL) from a donor mouse strain, C57BL/6, into a recipient mouse strain, A/J. The objective was to assess the effect of three previously identified chromosomal regions on mouse chro...

Enlace original: https://cgspace.cgiar.org/handle/10568/32934

Investigación en Agricultura
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Koudande, O.D. ,  Thomson, P.C. ,  Bovenhuis, H. ,  Iraqi, F.A. ,  Gibson, John P. ,  Arendonk, Johan A.M. van ,  [Biphasic survival analysis of trypanotolerance QTL in mice] ,  Biphasic survival analysis of trypanotolerance QTL in mice
Journal Article 2002-06-02

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

Economic values for production traits (carrier, fat, protein, and dressing percentage) and functional traits (conception rate, survival rate, body weight, and rumen capacity) were calculated for Holstein cattle of Costa Rica. Economic values were derived using a bio-economic model that combined g...

Enlace original: https://cgspace.cgiar.org/handle/10568/1838

Investigación en Agricultura
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Vargas, B. ,  Groen, A.F. ,  Herrero, Mario T. ,  Arendonk, Johan A.M. van ,  [Economic values for production and functional traits in Holstein cattle of Costa Rica] ,  Economic values for production and functional traits in Holstein cattle of Costa Rica
Journal Article 2008-07-30

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

Prioritizing livestock breeds for conservation needs to incorporate both genetic and non-genetic aspects important for the survival of the breeds. Here, we apply a maximum-utility-strategy to prioritize 14 traditional Ethiopian sheep breeds based on their threat status, contributions to farmer li...

Enlace original: https://cgspace.cgiar.org/handle/10568/1276

Investigación en Agricultura
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Gizaw, Solomon ,  Komen, Hans ,  Windig, J.J. ,  Hanotte, Olivier H. ,  Arendonk, Johan A.M. van ,  [Conservation priorities for Ethiopian sheep breeds combining threat status, breed merits and contributions to genetic diversity] ,  Conservation priorities for Ethiopian sheep breeds combining threat status, breed merits and contributions to genetic diversity
Journal Article 2007-11

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

We investigated genetic and morphological diversity and population structure of 14 traditional sheep populations originating from four ecological zones in Ethiopia (sub-alpine, wet highland, sub-humid lowland and arid lowland). All animals (n = 672) were genotyped for 17 microsatellite markers an...

Enlace original: https://cgspace.cgiar.org/handle/10568/1076

Investigación en Agricultura
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Gizaw, Solomon ,  Arendonk, Johan A.M. van ,  Komen, Hans ,  Windig, J.J. ,  Hanotte, Olivier H. ,  [Population structure, genetic variation and morphological diversity in indigenous sheep of Ethiopia] ,  Population structure, genetic variation and morphological diversity in indigenous sheep of Ethiopia
Journal Article 2006

Autor: Solomon G. Sisay L. Hans K. Arendonk, Johan A.M. van

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 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/66669

Investigación en Agricultura
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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
Journal Article 2000

Autor: Koudande, O.D. Iraqi, F.A. Thomson, P.C. Teale, A.J. Arendonk, Johan A.M. van

To optimize designs to implement marker-assisted introgression programs aiming to introgress three unlinked quantitative trait loci (QTL), the present paper studies different alternatives versus a traditional backcross or intercross phase. Four alternative backcross strategies appear to be more a...

Enlace original: https://cgspace.cgiar.org/handle/10568/29208

Investigación en Agricultura
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Koudande, O.D. ,  Iraqi, F.A. ,  Thomson, P.C. ,  Teale, A.J. ,  Arendonk, Johan A.M. van ,  [Strategies to optimize marker-assisted introgression of multiple unlinked QTL] ,  Strategies to optimize marker-assisted introgression of multiple unlinked QTL
Journal Article 1998

Autor: Koudande, O.D. Iraqi, F.A. Arendonk, Johan A.M. van Teale, A.J.
Enlace original: https://cgspace.cgiar.org/handle/10568/28220

Investigación en Agricultura
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Koudande, O.D. ,  Iraqi, F.A. ,  Arendonk, Johan A.M. van ,  Teale, A.J. ,  [Marker assisted introgression of multiple unlinked QTL: Experimental design and consequences] ,  Marker assisted introgression of multiple unlinked QTL: Experimental design and consequences
Journal Article 2000-06-20

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

Nine mathematical models were compared for their ability to predict daily milk yields (n = 294,986) in standard 305-d and extended lactations of dairy cows of Costa Rica. Lactations were classified by parity (first and later), lactation length (9 to 10, 11 to 12, 13 to 14, 15 to 16, and 16 to 17 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/2112

Investigación en Agricultura
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Vargas, B. ,  Koops, W. ,  Herrero, Mario T. ,  Arendonk, Johan A.M. van ,  [Modelling extended lactation curves of dairy cows of Costa Rica] ,  Modelling extended lactation curves of dairy cows of Costa Rica
Journal Article 2003

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

Breeding objectives were developed for meat sheep in smallholder production circumstances in the tropics. The traits considered were litter size, lambing frequency, pre-weaning, and post-weaning lamb survival to 12 months, ewe survival, lamb live weight at 12-month, mature ewe live weight, consum...

Enlace original: https://cgspace.cgiar.org/handle/10568/33171

Investigación en Agricultura
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Kosgey, I.S. ,  Arendonk, Johan A.M. van ,  Baker, R.L. ,  [Economic values for traits of meat sheep in medium to high production potential areas of the tropics] ,  Economic values for traits of meat sheep in medium to high production potential areas of the tropics

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