Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes
Village- and central nucleus-based schemes were simulated and evaluated for their relative bio-economic efficiencies, using Ethiopia's Menz sheep as example. The schemes were: village-based 2-tier (Scheme-1) and 1-tier (Scheme-2) cooperative village breeding schemes, dispersed village-based nuclei s...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/67393 |
| _version_ | 1855532329350463488 |
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| author | Gizaw, Solomon Rischkowsky, Barbara A. Valle-Zárate, A. Haile, Aynalem Arendonk, Johan A.M. van Okeyo Mwai, Ally Dessie, Tadelle |
| author_browse | Arendonk, Johan A.M. van Dessie, Tadelle Gizaw, Solomon Haile, Aynalem Okeyo Mwai, Ally Rischkowsky, Barbara A. Valle-Zárate, A. |
| author_facet | Gizaw, Solomon Rischkowsky, Barbara A. Valle-Zárate, A. Haile, Aynalem Arendonk, Johan A.M. van Okeyo Mwai, Ally Dessie, Tadelle |
| author_sort | Gizaw, Solomon |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Village- and central nucleus-based schemes were simulated and evaluated for their relative bio-economic efficiencies, using Ethiopia's Menz sheep as example. The schemes were: village-based 2-tier (Scheme-1) and 1-tier (Scheme-2) cooperative village breeding schemes, dispersed village-based nuclei scheme (Scheme-3), conventional 2-tier central nucleus-based scheme (Scheme-4), and schemes linking a central nucleus and village multiplier nuclei with selection in central nucleus (Scheme-5) or in both central and village nuclei (Scheme-6). Among village-based schemes, Scheme-1 gave the highest genetic progress, while Scheme-2 was economically the most efficient with genetic gain in the breeding objective of Birr 5.6 and a profit of Birr 37.2/ewe/year. The central nucleus schemes were more efficient than the village schemes. Scheme-4 was the most efficient with genetic gain in the breeding objective of Birr 13.5 and a profit of Birr 71.2, but is operationally more difficult as it requires a very large central nucleus. The choice between village and central nucleus-based schemes would depend on local conditions (availability of infrastructure, logistics and technical knowhow and support). Linking central nucleus with village-based nuclei (Scheme-6) would be a feasible option to overcome the operational difficulties of the conventional central nucleus scheme. If a village-based breeding program is envisaged as should be the 1st step in most low-input systems, then Scheme-2 is the most efficient. To scale out to an entire Menz breed level, Scheme-3 would be recommended. |
| format | Journal Article |
| id | CGSpace67393 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace673932023-10-04T11:10:21Z Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes Gizaw, Solomon Rischkowsky, Barbara A. Valle-Zárate, A. Haile, Aynalem Arendonk, Johan A.M. van Okeyo Mwai, Ally Dessie, Tadelle animal breeding sheep Village- and central nucleus-based schemes were simulated and evaluated for their relative bio-economic efficiencies, using Ethiopia's Menz sheep as example. The schemes were: village-based 2-tier (Scheme-1) and 1-tier (Scheme-2) cooperative village breeding schemes, dispersed village-based nuclei scheme (Scheme-3), conventional 2-tier central nucleus-based scheme (Scheme-4), and schemes linking a central nucleus and village multiplier nuclei with selection in central nucleus (Scheme-5) or in both central and village nuclei (Scheme-6). Among village-based schemes, Scheme-1 gave the highest genetic progress, while Scheme-2 was economically the most efficient with genetic gain in the breeding objective of Birr 5.6 and a profit of Birr 37.2/ewe/year. The central nucleus schemes were more efficient than the village schemes. Scheme-4 was the most efficient with genetic gain in the breeding objective of Birr 13.5 and a profit of Birr 71.2, but is operationally more difficult as it requires a very large central nucleus. The choice between village and central nucleus-based schemes would depend on local conditions (availability of infrastructure, logistics and technical knowhow and support). Linking central nucleus with village-based nuclei (Scheme-6) would be a feasible option to overcome the operational difficulties of the conventional central nucleus scheme. If a village-based breeding program is envisaged as should be the 1st step in most low-input systems, then Scheme-2 is the most efficient. To scale out to an entire Menz breed level, Scheme-3 would be recommended. 2014-10 2015-07-27T08:16:02Z 2015-07-27T08:16:02Z Journal Article https://hdl.handle.net/10568/67393 en Limited Access Wiley Gizaw, S., Rischkowsky, B., Valle-Zárate, A., Haile, A., Arendonk, J.A.M. van, Okeyo, A.M. and Dessie, T. 2014. Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes. Journal of Animal Breeding and Genetics 131(5):341–349. |
| spellingShingle | animal breeding sheep Gizaw, Solomon Rischkowsky, Barbara A. Valle-Zárate, A. Haile, Aynalem Arendonk, Johan A.M. van Okeyo Mwai, Ally Dessie, Tadelle Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes |
| title | Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes |
| title_full | Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes |
| title_fullStr | Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes |
| title_full_unstemmed | Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes |
| title_short | Breeding programs for smallholder sheep farming systems: I. Evaluation of alternative designs of breeding schemes |
| title_sort | breeding programs for smallholder sheep farming systems i evaluation of alternative designs of breeding schemes |
| topic | animal breeding sheep |
| url | https://hdl.handle.net/10568/67393 |
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