Bio-economic and operational feasibility of introducing oestrus synchronization and artificial insemination in simulated smallholder sheep breeding programmes

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cg.authorship.typesCGIAR single centreen_US
cg.contributor.affiliationInternational Livestock Research Instituteen_US
cg.contributor.crpLivestocken_US
cg.contributor.donorGlobal Affairs Canadaen_US
cg.creator.identifierSolomon Gizaw: 0000-0002-0600-7188en_US
cg.howPublishedFormally Publisheden_US
cg.identifier.doihttps://doi.org/10.1017/s1751731117003032en_US
cg.isijournalISI Journalen_US
cg.issn1751-7311en_US
cg.issue7en_US
cg.journalAnimalen_US
cg.reviewStatusPeer Reviewen_US
cg.subject.ilriANIMAL BREEDINGen_US
cg.subject.ilriRESEARCHen_US
cg.subject.ilriSHEEPen_US
cg.volume12en_US
dc.contributor.authorGizaw, Solomonen_US
dc.contributor.authorTegegne, Azageen_US
dc.date.accessioned2018-01-17T15:04:14Zen_US
dc.date.available2018-01-17T15:04:14Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/90501en_US
dc.titleBio-economic and operational feasibility of introducing oestrus synchronization and artificial insemination in simulated smallholder sheep breeding programmesen_US
dcterms.abstractLow selection intensity due to few selection candidates available at any one time due to thinly spread year-round lambings in villages and prohibitively large nucleus requirements to provide sufficient improved rams to the production tier are the major challenges for designing effective village-based and central nucleus-based breeding programmes, respectively, for smallholder sheep farmers. To tackle these challenges, we used deterministic simulation to design three schemes in village-based programmes introducing hormonal oestrus synchronization (natural oestrus (VNE), single oestrus synchronization (VSE1) and double oestrus synchronization (VSE2)) and three schemes in central nucleus programme introducing artificial insemination (AI) (natural mating with nucleus sizes of 5% (CNM1) and 1% (CNM2) of the total ewe population and natural mating in breeding tier and AI in production tier (CAI)). The schemes were evaluated for their bio-economic and operational feasibility, taking Bonga sheep of Ethiopia as a case study. The selection intensities achieved in VNE, VSE1 and VSE2 were 2.0, 2.3 and 2.4, respectively, for selecting rams for the breeding tier and 0.0, 0.8 and 1.0, respectively, for the production tier. The profits per ewe per year from VNE, VSE1 and VSE2 were Birr 12.2, 21.7 and 24.5, but the profit from VNE for the production tier was zero. CAI generated more genetic gains in the breeding objective (Birr 4.8) than CNM1 (Birr 2.5) and CNM2 (Birr 0.0) in the production tier. However, CAI was less profitable than CNM1 and CNM2. In conclusion, hormonal oestrus synchronization was found to be a feasible technological aide to accelerate genetic progress in village-based programmes. CNM1 and CNM2 could not be recommended as CNM1 requires large nucleus of 10 325 ewes and CNM2 results in zero genetic gain in the production tier. CAI could overcome the challenge in central nucleus programmes, namely unaffordable large nucleus, but the scheme needs to be subsidized by the public sector to be economically feasible for farmers.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.audienceScientistsen_US
dcterms.bibliographicCitationGizaw, S. and Tegegne, A. 2018. Bio-economic and operational feasibility of introducing oestrus synchronization and artificial insemination in simulated smallholder sheep breeding programmes. Animal 12(7):1517-1526.en_US
dcterms.extentp. 1517-1526en_US
dcterms.issued2018en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-NC-ND-4.0en_US
dcterms.publisherElsevieren_US
dcterms.subjectanimal breedingen_US
dcterms.subjectsheepen_US
dcterms.subjectresearchen_US
dcterms.typeJournal Articleen_US

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