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Evolutionary subdivision of domestic chickens: implications for local breeds as assessed by phenotype and genotype in comparison to commercial and fancy breeds

Larkina, Tatiana A. and Barkova, Olga Y. and Peglivanyan, Grigoriy K. and Mitrofanova, Olga V. and Dementieva, Natalia V. and Stanishevskaya, Olga I. and Vakhrameev, Anatoly B. and Makarova, Alexandra V. and Shcherbakov, Yuri S. and Pozovnikova, Marina V. and Brazhnik, Evgeni A. and Griffin, Darren K. and Romanov, Michael N. (2022) Evolutionary subdivision of domestic chickens: implications for local breeds as assessed by phenotype and genotype in comparison to commercial and fancy breeds. In: Poultry: Breeding, Health, Nutrition, and Management. MDPI, Basel, Switzerland, Basel, Switzerland, pp. 121-143. ISBN 978-3-0365-4055-9. E-ISBN 978-3-0365-4056-6. (doi:10.3390/books978-3-0365-40) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:96979)

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To adjust breeding programs for local, commercial, and fancy breeds, and to implement molecular (marker-assisted) breeding, a proper comprehension of phenotypic and genotypic variation is a sine qua non for breeding progress in animal production. Here, we investigated an evolutionary subdivision of domestic chickens based on their phenotypic and genotypic variability using a wide sample of 49 different breeds/populations. These represent a significant proportion of the global chicken gene pool and all major purposes of breed use (according to their traditional classification model), with many of them being characterized by a synthetic genetic structure and notable admixture. We assessed their phenotypic variability in terms of body weight, body measurements, and egg production. From this, we proposed a phenotypic clustering model (PCM) including six evolutionary lineages of breed formation: egg-type, meat-type, dual purpose (egg-meat and meat-egg), game, fancy, and Bantam. Estimation of genotypic variability was carried out using the analysis of five SNPs, i.e., at the level of genomic variation at the NCAPG-LCORL locus. Based on these data, two generally similar genotypic clustering models (GCM1 and GCM2) were inferred that also had several overlaps with PCM. Further research for SNPs associated with economically important traits can be instrumental in marker-assisted breeding programs.

Item Type: Book section
DOI/Identification number: 10.3390/books978-3-0365-40
Uncontrolled keywords: chicken breeds; evolutionary lineages; phenotypic traits; NCAPG-LCORL; synthetic genetic structure; admixture
Subjects: Q Science > QH Natural history
Q Science > QH Natural history > QH324.2 Computational biology
Q Science > QH Natural history > QH426 Genetics
Q Science > QH Natural history > QH75 Conservation (Biology)
S Agriculture > SF Animal culture
Divisions: Divisions > Division of Natural Sciences > Centre for Interdisciplinary Studies of Reproduction
Divisions > Division of Natural Sciences > Biosciences
Signature Themes: Food Systems, Natural Resources and Environment
Depositing User: Mike Romanov
Date Deposited: 18 Sep 2022 15:10 UTC
Last Modified: 20 Sep 2022 09:21 UTC
Resource URI: (The current URI for this page, for reference purposes)

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