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dc.contributor.authorBunning Hen
dc.contributor.authorWall Een
dc.contributor.authorChagunda MGGen
dc.contributor.authorBanos Gen
dc.contributor.authorSimm Gen
dc.date.accessioned2019-01-08T10:37:54Z
dc.date.available2019-01-08T10:37:54Z
dc.date.issued2018
dc.identifier.citation97:1en
dc.identifier.urihttps://doi.org/10.1093/jas/sky406
dc.identifier.urihttp://hdl.handle.net/11262/11565
dc.description.abstractThe aim of this study was to investigate the effects of animal trait, breed combination, and climate on the expressed levels of heterosis in crossbreeding schemes using tropical cattle. A meta-analysis of 42 studies was carried out with 518 heterosis estimates. In total, 62.5% of estimates were found to be significantly different from zero, the majority of which (89.8%) were beneficial for the studied trait. Trait and breed combination were shown to have a significant effect on the size of heterosis (P < 0.001 and P = 0.044, respectively). However, climate did not have a significant effect. Health, longevity, and milk production traits showed the highest heterosis (31.84 ± 10.73%, 35.13 ± 14.35%, and 35.15 ± 3.29%, respectively), whereas fertility, growth, and maternal traits showed moderate heterosis (12.02 ± 4.10%, 12.25 ± 2.69%, and 15.69 ± 3.26%, respectively). Crosses between breeds from different types showed moderate to high heterosis ranging from 9.95 ± 4.53% to 19.53 ± 3.62%, whereas crosses between breeds from the same type did not express heterosis that was significantly different from zero. These results show that heterosis has significant and favorable impact on productivity of cattle farming in tropical production systems, particularly in terms of fitness but also milk production traits.en
dc.language.isoenen
dc.relation.isformatof14984en
dc.relation.ispartofJournal of Animal Scienceen
dc.rights© The Author(s) 2018. Published by Oxford University Press on behalf of the American Society of Animal Science. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
dc.subjectCrossbreedingen
dc.subjectHeterosisen
dc.subjectMeta-analysisen
dc.subjectTropical cattleen
dc.titleHeterosis in cattle crossbreeding schemes in tropical regions: meta-analysis of effects of breed combination, trait type, and climate on level of heterosisen
dc.typeArticleen
dc.description.versionAccepted manuscript
dc.extent.pageNumbers35-42en
rioxxterms.publicationdate2018-10-20
rioxxterms.typeJournal Article/Reviewen
dcterms.dateAccepted2018-10-15
refterms.accessExceptionNAen
refterms.dateDeposit2019-01-08
refterms.depositExceptionpublishedGoldOAen
refterms.depositExceptionExplanationGoldOAen
refterms.panelUnspecifieden
refterms.technicalExceptionNAen
refterms.versionAMen


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