Effect of genomic X-chromosome regions on Nelore bull fertility

Autor: Raphael Bermal Costa, Isis da Costa Hermisdorff, Iara Del Pilar Solar Diaz, Gregório Miguel Ferreira de Camargo, Lucia Galvão de Albuquerque
Přispěvatelé: Universidade Federal da Bahia (UFBA), Universidade Estadual Paulista (UNESP)
Rok vydání: 2021
Předmět:
Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 2190-3883
1234-1983
DOI: 10.1007/s13353-021-00645-0
Popis: Made available in DSpace on 2022-04-29T08:29:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Scrotal circumference (SC) is a commonly used trait related to sexual precocity in bulls. Genome-wide association studies have uncovered a lot of genes related to this trait, however, only those present on autosomes. The inclusion of the second biggest chromosome (BTAX) can improve the knowledge of the genetic architecture of this trait. In this study, we performed a weighted, single-step, genome-wide association study using a 777 k BovineHD BeadChip (IllumHD) to analyze the association between SNPs and SC in Brazilian Nelore cattle. Phenotypes from 79,300 males and 3263 genotypes (2017 from females and 1246 from males)—(39,367 SNPs markers located at ChrX) were used. We identified eight regions on chromosome X that displayed important associations with SC. The results showed that together the genomic windows explained 28.52% of the genetic variance for the examined trait. Genes with potential functions in reproduction and fertility regulation were highlighted as candidates for sexual precocity rates in Nelore cattle (AFF2 and PJA1). Moreover, we found 10 genes that had not previously been identified as being associated with sexual precocity traits in cattle. These findings will further advance our understanding of the genetic architecture, considering mainly the presence of the chromosome X, for indicine cattle reproductive traits, being useful in the context of genomic prediction in beef cattle. Escola de Medicina Veterinária E Zootecnia Universidade Federal da Bahia (UFBA) Departamento de Zootecnia Faculdade de Ciências Agrárias E Veterinárias Universidade Estadual Paulista (Unesp) Departamento de Zootecnia Faculdade de Ciências Agrárias E Veterinárias Universidade Estadual Paulista (Unesp)
Databáze: OpenAIRE
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