The effect of the proportion of Modern European ancestry on grower and sow performance of pigs in smallholder systems in Uganda

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cg.authorship.typesCGIAR and developing country instituteen
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationUniversity of Natural Resources and Life Sciences, Viennaen
cg.contributor.affiliationInternational Livestock Research Instituteen
cg.contributor.affiliationPIG Austria GmbHen
cg.contributor.affiliationPig Improvement Company, Barcelona, Spainen
cg.contributor.crpLivestock
cg.contributor.donorCGIAR Trust Funden
cg.contributor.donorAustria Development Agencyen
cg.coverage.countryUganda
cg.coverage.iso3166-alpha2UG
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierKaren Marshall: 0000-0003-4197-1455
cg.creator.identifierMaria Wurzinger: 0000-0001-9391-014X
cg.creator.identifierBen Lukuyu: 0000-0002-9374-3553
cg.creator.identifierEmily Ouma: 0000-0002-3123-1376
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.3389/fgene.2023.1123826en
cg.isijournalISI Journalen
cg.issn1664-8021en
cg.journalFrontiers in Geneticsen
cg.reviewStatusPeer Reviewen
cg.subject.ilriANIMAL BREEDINGen
cg.subject.ilriBREEDSen
cg.subject.ilriGENETICSen
cg.subject.ilriPIGSen
cg.volume14en
dc.contributor.authorBabigumira, B.M.en
dc.contributor.authorSölkner, J.en
dc.contributor.authorMészáros, Gáboren
dc.contributor.authorWurzinger, Mariaen
dc.contributor.authorPfeiffer, C.en
dc.contributor.authorLewis, C.R.G.en
dc.contributor.authorLukuyu, Ben A.en
dc.contributor.authorOuma, Emily A.en
dc.contributor.authorMarshall, Karenen
dc.date.accessioned2023-10-13T08:14:55Zen
dc.date.available2023-10-13T08:14:55Zen
dc.identifier.urihttps://hdl.handle.net/10568/132237
dc.titleThe effect of the proportion of Modern European ancestry on grower and sow performance of pigs in smallholder systems in Ugandaen
dcterms.abstractSeveral factors, including breed, lead to divergent performance of pigs for production and reproduction traits in different environments. A recent genomics study showed that Modern European (ME) pig breeds contribute to the ancestry of smallholder pigs in the Hoima and Kamuli districts, Uganda. These pigs were also involved in a longitudinal study with several traits recorded, including 540 body weights (WT) of 374 growing pigs, 195 records of total number of piglets born alive (TBA) of 157 sows, and 110 total number weaned (TNW) records of 94 sows. Linear mixed-effects models were used to test for the significance of environmental effects, including housing system, geographic location, and the season when the events occurred as well as animal-specific effects like age, sex, parity, and farrow-to-weaning interval. Stepwise model reduction starting from models with all main effects and pairwise interactions was applied. The final models were then expanded to include proportions of Modern European (ME) ancestry for the subset of animals genotyped, following genomic ancestry analysis based on a Porcine 50K SNP Chip. ME ancestry proportions ranged from 0.02 to 0.50 and were categorized into three classes (low/medium/high ME) based on 33.3% quantiles. The effects of ME classes on WT and TBA were not significant. ME showed a significant effect on TNW. Sows with a high proportion of ME weaned 2.4 piglets more than the low group, the medium ME group being intermediate. This study used genomic data to investigate the effects of genetic ancestry on the performance of smallholder pigs in Uganda. The proportion of Modern European ancestry did not exceed 0.50, therefore not allowing for the comparison of local versus pure “exotic” types of pigs. For the range of ancestries observed, which is the relevant one for current smallholder systems in Uganda, differences were small for the body weight of growing pigs and the number of piglets born alive, while higher proportions of ME ancestry resulted in significantly more piglets weaned. The availability of genotypes of a higher number of growing pigs would have been beneficial for drawing conclusions on the effect of ME ancestry on the growth rates of smallholder pigs in Uganda.en
dcterms.accessRightsOpen Access
dcterms.audienceScientistsen
dcterms.available2023-09-25
dcterms.bibliographicCitationBabigumira, B.M., Sölkner, J., Mészáros, G., Wurzinger, M., Pfeiffer, C., Lewis, C.R.G., Lukuyu, B., Ouma, E. and Marshall, K. 2023. The effect of the proportion of Modern European ancestry on grower and sow performance of pigs in smallholder systems in Uganda. Frontiers in Genetics 14:1123826.en
dcterms.issued2023
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherFrontiers Mediaen
dcterms.subjectswineen
dcterms.subjectsmallholdersen
dcterms.subjectanimal breedingen
dcterms.subjectgeneticsen
dcterms.subjectbreedsen
dcterms.typeJournal Article

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