Evaluating reproduction traits in a crossbreeding program between indigenous and exotic sheep in semi-arid lands

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cg.authorship.typesCGIAR and developing country instituteen_US
cg.authorship.typesCGIAR and advanced research instituteen_US
cg.contributor.affiliationUniversity of Giessenen_US
cg.contributor.affiliationInternational Livestock Research Instituteen_US
cg.contributor.affiliationFree University of Bozen-Bolzanoen_US
cg.contributor.affiliationScotland's Rural Collegeen_US
cg.contributor.affiliationUniversity of Hohenheimen_US
cg.contributor.affiliationUniversity of Global Health Equityen_US
cg.contributor.affiliationUniversity of KwaZulu-Natalen_US
cg.contributor.donorCGIAR Trust Funden_US
cg.contributor.initiativeLivestock and Climateen_US
cg.creator.identifierEdwin Oyieng: 0000-0002-5004-2060en_US
cg.creator.identifierOjango J.M.K.: 0000-0003-0224-5370en_US
cg.creator.identifierRaphael Mrode: 0000-0003-1964-5653en_US
cg.creator.identifierRichard Dooso Oloo: 0000-0002-6004-3729en_US
cg.creator.identifierAlly Okeyo Mwai: 0000-0003-2379-7801en_US
cg.howPublishedFormally Publisheden_US
cg.identifier.doihttps://doi.org/10.1016/j.animal.2024.101391en_US
cg.isijournalISI Journalen_US
cg.issn1751-732Xen_US
cg.issue1en_US
cg.journalAnimalen_US
cg.reviewStatusPeer Reviewen_US
cg.subject.actionAreaResilient Agrifood Systemsen_US
cg.subject.ilriANIMAL PRODUCTIONen_US
cg.subject.ilriSHEEPen_US
cg.subject.ilriSMALL RUMINANTSen_US
cg.subject.ilriINDIGENOUS BREEDSen_US
cg.subject.impactAreaClimate adaptation and mitigationen_US
cg.volume19en_US
dc.contributor.authorOyieng, Edwin P.en_US
dc.contributor.authorOjango, Julie M.K.en_US
dc.contributor.authorGauly, M.en_US
dc.contributor.authorMrode, Raphael A.en_US
dc.contributor.authorDooso, Richarden_US
dc.contributor.authorOkeyo Mwai, Allyen_US
dc.contributor.authorKalinda, C.en_US
dc.contributor.authorKönig, S.en_US
dc.date.accessioned2025-01-13T10:03:08Zen_US
dc.date.available2025-01-13T10:03:08Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/168891en_US
dc.titleEvaluating reproduction traits in a crossbreeding program between indigenous and exotic sheep in semi-arid landsen_US
dcterms.abstractReproduction traits are important factors determining the efficiency of any sheep production system. This study evaluates the age at first lambing (AFL), lambing interval (LI), litter weight at birth (LBWT), litter weight at weaning (LWWT), birth weight of ewe (EBWT) and weaning weight of ewes (EWWT) in a crossbreeding program between the Red Maasai (RRRR) and Dorper sheep and their crosses, 75% Dorper and 50% Dorper (DDRR) breeds. All the traits significantly (P < 0.05) differed across breeds and season of birth of the ewe. LBWT and LWWT were significantly affected by the sex of the lamb, type of birth of the lamb and parity in which the lambs were born in. AFL and LI had very high environmental variances. Overall heritability estimates of AFL (0.09 ± 0.04) and LI (0.00 ± 0.01) were not significant from zero while the heritability estimates for EBWT (0.38 ± 0.04), EWWT (0.23 ± 0.03), LBWT (0.19 ± 0.03) and LWWT (0.09 ± 0.02) were significant (P < 0.05). The RRRR had the highest genetic gain for all traits while the DDRR had a higher genetic gain among the crosses. LI had negative genetic correlations with LBWT (−0.53 ± 0.08) and LWWT (−0.28 ± 19.59) while AFL had positive genetic correlations with LBWT (0.27 ± 0.46) and LWWT (0.31 ± 0.34). The phenotypic trends for AFL and LWWT showed a negative and positive association, respectively, with the rainfall index over the years. With proper farm management, improved reproduction performance of ewes is possible by indirect selection using LBWT and LWWT for the Red Maasai, Dorper and their crosses within the semi-arid lands.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.audienceCGIARen_US
dcterms.audienceDonorsen_US
dcterms.audienceScientistsen_US
dcterms.available2024-12-04en_US
dcterms.bibliographicCitationOyieng, E., Ojango, J.M.K., Gauly, M., Mrode, R., Dooso, R., Okeyo, A.M., Kalinda, C. and König, S. 2025. Evaluating reproduction traits in a crossbreeding program between indigenous and exotic sheep in semi-arid lands. Animal 19(1): 101391.en_US
dcterms.extent101391en_US
dcterms.issued2025-01-01en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-NC-ND-4.0en_US
dcterms.subjectanimal productionen_US
dcterms.subjectdorperen_US
dcterms.subjectgenetic parametersen_US
dcterms.subjectlanden_US
dcterms.subjectsheepen_US
dcterms.subjectsmall ruminantsen_US
dcterms.typeJournal Articleen_US

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