Genetic diversity and selection signatures of the beef ‘Charolais de Cuba’ breed

Yoel Rodriguez-Valera, Gilles Renand, Michel Naves, Yidix Fonseca-Jiménez, Teresa Inés Moreno-Probance, Sebastian Ramos-Onsins, Dominique Rocha, Yuliaxis Ramayo-Caldas

    Research output: Contribution to journalArticleResearch

    3 Citations (Scopus)

    Abstract

    © 2018, The Author(s). In this study, we used BovineSNP50 Genotyping BeadChip data to estimate the structure, putative ancestral origin as well as to identify regions with selective sweeps that may have had an important role in the adaptation to tropical conditions of the ‘Charolais de Cuba’ (CHCU) breed. According to a principal component analysis, CHCU samples cluster together with taurine breeds with an estimated 93% of taurus ancestral alleles. Despite the short period since importation, we detected differentiation (Fst = 0.049) between the French Charolaise (CHA) and CHCU. However, CHA breed was the closest breed to CHCU followed by other hybrids breed with a clear CHA origin. Linkage disequilibrium (r2) decay tends to be lower in CHCU compared to CHA probably due to a less intense artificial selection programs of CHCU. Signals of recent adaptation to tropical conditions between CHCU and CHA were identified. Genes mapping within those regions reflect different functions related to immunity, metabolic changes and heat tolerance (CHCU) and muscle development and meat quality (CHA) that may have had an important role in the phenotypic differentiation of these breeds. Further studies will expand our knowledge on the molecular basis of adaptation of cattle to tropical conditions and molecular process associated with meat quality traits.
    Original languageEnglish
    Article number11005
    JournalScientific Reports
    Volume8
    DOIs
    Publication statusPublished - 1 Dec 2018

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