Estimation of heterosis, combining ability and reciprocal effects for body weight in four genetic groups of chicken from a full diallel cross

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationEthiopian Institute of Agricultural Researchen
cg.contributor.affiliationAddis Ababa Universityen
cg.contributor.affiliationInternational Livestock Research Instituteen
cg.contributor.donorInternational Livestock Research Instituteen
cg.contributor.donorEthiopian Institute of Agricultural Researchen
cg.coverage.countryEthiopia
cg.coverage.iso3166-alpha2ET
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierPhilimon Teshome Feyisa: 0009-0000-9458-4729en
cg.creator.identifierWondmeneh Esatu Woldegiorgiss: 0000-0001-7279-8240en
cg.creator.identifierTadelle Dessie: 0000-0002-1630-0417en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1016/j.psj.2025.105232en
cg.isijournalISI Journalen
cg.issn0032-5791en
cg.issue8en
cg.journalPoultry Scienceen
cg.reviewStatusPeer Reviewen
cg.subject.ilriGENETICSen
cg.subject.ilriPOULTRYen
cg.subject.impactAreaNutrition, health and food security
cg.subject.sdgSDG 2 - Zero hungeren
cg.volume104en
dc.contributor.authorTeshome, Philimonen
dc.contributor.authorGoshu, G.en
dc.contributor.authorEsatu, Wondmenehen
dc.contributor.authorDessie, Tadelleen
dc.date.accessioned2025-05-02T06:30:50Zen
dc.date.available2025-05-02T06:30:50Zen
dc.identifier.urihttps://hdl.handle.net/10568/174408
dc.titleEstimation of heterosis, combining ability and reciprocal effects for body weight in four genetic groups of chicken from a full diallel crossen
dcterms.abstractThis study aims to estimate the heterotic effects (H<sup>e</sup>), general combining abilities (GCA), specific combining abilities (SCA), and reciprocal effects (RE) for body weight (BW) in a 4 × 4 full diallel cross involving Improved Horro (H), commercial Sasso (S), Potchefstroom Koekoek (K), and Dz-white feathered (D) chickens. A total of 960 purebred and F1 hybrid chickens were used in this study, comprising sixteen genetic groups. The birds were reared from hatch to 14 weeks (wk) of age in a deep litter floor house partitioned with wire mesh. Chickens of different genotypes were randomly assigned to three pens per genetic group in a completely randomized design. BW measurements were recorded at hatch, 2, 4, 6, 8, 10, 12, and 14 wk of age. Heterosis estimates indicated that crosses between S males with K and D females (including their reciprocal crosses) exhibited the strongest H<sup>e</sup> for BW from early to late ages. In contrast, crosses between H males and K females (and their reciprocals) showed positive but low H<sup>e</sup>, which increased slightly at later ages. Meanwhile, the cross between K males and D females displayed negative H<sup>e</sup> across all ages, whereas its reciprocal cross had low but positive H<sup>e</sup>. GCA effects were high (p < 0.0001) among purebreds, which shows the importance of additive gene effects on BW. SCA highly (p < 0.0001) influenced BW at hatch, wk 2, 4, and 10, highlighting the role of non-additive genetic variance at the early age of BW inheritance. RE was generally non-significant except at hatch (p = 0.002), wk 2 (p < 0.0001), and wk 10 (p = 0.036), indicating potential maternal or paternal contributions during these early developmental stages. In conclusion, the results indicated that breeding strategies should prioritize selecting parents with superior GCA to ensure consistent and predictable gains in BW. Furthermore, developing a broiler line from S sires crossed with the K and D dams and H sires with S dam lines should also be considered.en
dcterms.accessRightsOpen Access
dcterms.audienceAcademicsen
dcterms.audienceScientistsen
dcterms.available2025-05-01en
dcterms.bibliographicCitationTeshome, P., Goshu, G., Esatu, W. and Dessie, T. 2025. Estimation of heterosis, combining ability and reciprocal effects for body weight in four genetic groups of chicken from a full diallel cross. Poultry Science 104(8): 105232.en
dcterms.extent105232en
dcterms.issued2025-08en
dcterms.languageen
dcterms.licenseCC-BY-NC-ND-4.0
dcterms.publisherElsevieren
dcterms.subjectgeneticsen
dcterms.subjectpoultryen
dcterms.typeJournal Article

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