Breeding programmes for smallholder sheep farming systems: II. Optimization of cooperative village breeding schemes

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cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Livestock Research Instituteen
cg.contributor.affiliationWageningen University & Researchen
cg.contributor.affiliationUniversität Hohenheimen
cg.contributor.affiliationInternational Center for Agricultural Research in the Dry Areasen
cg.contributor.crpLivestock and Fish
cg.creator.identifierTadelle Dessie: 0000-0002-1630-0417en
cg.creator.identifierSolomon Gizaw: 0000-0002-0600-7188en
cg.creator.identifierAynalem: 0000-0001-5914-0487en
cg.creator.identifierBarbara Rischkowsky: 0000-0002-0035-471Xen
cg.creator.identifierAlly Okeyo Mwai: 0000-0003-2379-7801en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1111/jbg.12102en
cg.isijournalISI Journalen
cg.issn0931-2668en
cg.issue5en
cg.journalJournal of Animal Breeding and Geneticsen
cg.reviewStatusPeer Reviewen
cg.subject.ilriANIMAL BREEDINGen
cg.subject.ilriFARMING SYSTEMSen
cg.subject.ilriGENETICSen
cg.subject.ilriSHEEPen
cg.subject.ilriSMALL RUMINANTSen
cg.volume131en
dc.contributor.authorGizaw, Solomonen
dc.contributor.authorArendonk, Johan A.M. vanen
dc.contributor.authorValle-Zárate, A.en
dc.contributor.authorHaile, Aynalemen
dc.contributor.authorRischkowsky, Barbara A.en
dc.contributor.authorDessie, Tadelleen
dc.contributor.authorOkeyo Mwai, Allyen
dc.date.accessioned2015-07-27T07:51:37Zen
dc.date.available2015-07-27T07:51:37Zen
dc.identifier.urihttps://hdl.handle.net/10568/67387
dc.titleBreeding programmes for smallholder sheep farming systems: II. Optimization of cooperative village breeding schemesen
dcterms.abstractA simulation study was conducted to optimize a cooperative village-based sheep breeding scheme for Menz sheep of Ethiopia. Genetic gains and profits were estimated under nine levels of farmers' participation and three scenarios of controlled breeding achieved in the breeding programme, as well as under three cooperative flock sizes, ewe to ram mating ratios and durations of ram use for breeding. Under fully controlled breeding, that is, when there is no gene flow between participating (P) and non-participating (NP) flocks, profits ranged from Birr 36.9 at 90% of participation to Birr 21.3 at 10% of participation. However, genetic progress was not affected adversely. When there was gene flow from the NP to P flocks, profits declined from Birr 28.6 to Birr −3.7 as participation declined from 90 to 10%. Under the two-way gene flow model (i.e. when P and NP flocks are herded mixed in communal grazing areas), NP flocks benefited from the genetic gain achieved in the P flocks, but the benefits declined sharply when participation declined beyond 60%. Our results indicate that a cooperative breeding group can be established with as low as 600 breeding ewes mated at a ratio of 45 ewes to one ram, and the rams being used for breeding for a period of two years. This study showed that farmer cooperation is crucial to effect genetic improvement under smallholder low-input sheep farming systems.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2014-06-19en
dcterms.bibliographicCitationGizaw, S., Arendonk, J.A.M. van, Valle-Zárate, A., Haile, A., Rischkowsky, B., Dessie, T. and Okeyo, A.M. 2014. Breeding programmes for smallholder sheep farming systems: II. Optimization of cooperative village breeding schemes. Journal of Animal Breeding and Genetics 131(5):350–357.en
dcterms.extentp. 350-357en
dcterms.issued2014-10en
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherWileyen
dcterms.subjectanimal breedingen
dcterms.subjectsheepen
dcterms.typeJournal Article

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