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A genomic inference of the White Plymouth Rock genealogy
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology. (Örjan Carlborg research group)ORCID iD: 0000-0002-2452-9721
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.ORCID iD: 0000-0001-8714-0812
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
The Livestock Conservancy, Pittsboro, NC 27312, USA.
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2019 (English)In: Poultry Science, ISSN 0032-5791, E-ISSN 1525-3171, Vol. 98, no 11, p. 5272-5280Article in journal (Refereed) Published
Abstract [en]

Crossing of populations has been, and still is, a central component in domestication and breed and variety formation. It is a way for breeders to utilize heterosis and to introduce new genetic variation into existing plant and livestock populations. During the mid-19thcentury, several chicken breeds that had been introduced to America from Europe and Asia became the founders for those formed in the USA. Historical records about the genealogy of these populations are often unclear and inconsistent. Here, we used genomics in an attempt to describe the ancestry of the White Plymouth Rock (WPR) chicken. In total, 150 chickens from the WPR and 8 other stocks that historical records suggested contributed to its formation were whole-genome re-sequenced. The admixture analyses of the autosomal and sex chromosomes showed that the WPR was likely founded as a cross between a paternal lineage that was primarily Dominique, and a maternal lineage where Black Java and Cochin contributed in equal proportions. These results were consistent and provided quantification with the historical records that they were the main contributors to the WPR. The genomic analyses also revealed genome-wide contributions (<10% each) by Brahma, Langshan, and Black Minorca. When viewed on an individual chromosomal basis, contributions varied considerably among stocks. 

Place, publisher, year, edition, pages
2019. Vol. 98, no 11, p. 5272-5280
Keywords [en]
Domestication, Ancestry, Admixture, Phenotype-genotype interface, Chickens
National Category
Genetics Animal and Dairy Science
Identifiers
URN: urn:nbn:se:uu:diva-388828DOI: 10.3382/ps/pez411ISI: 000496768700008PubMedID: 31309227OAI: oai:DiVA.org:uu-388828DiVA, id: diva2:1335440
Funder
Swedish Research Council Formas, 2013-450Swedish Research CouncilAvailable from: 2019-07-05 Created: 2019-07-05 Last updated: 2019-12-11Bibliographically approved

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The full text will be freely available from 2020-07-15 00:00
Available from 2020-07-15 00:00

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Guo, YingLillie, MetteZan, YanjunCarlborg, Örjan

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