Data/hora: 12/06/2024 05:59:20

Biblioteca(s): | Embrapa Gado de Leite.
Data corrente: | 17/07/2023
Data da última atualização: | 22/08/2023
Autoria: | ROCHA, R. de F. B.; GARCIA, A. O.; OTTO, P. I.; SANTOS, M. G. dos; SILVA, M. V. G. B.; MARTINS, M. F.; MACHADO, M. A.; PANETTO, J. C. do C.; GUIMARÃES, S. E. F.
Afiliação: | RENATA DE FÁTIMA BRETANHA ROCHA, Universidade Federal de Viçosa; ARIELLY OLIVEIRA GARCIA, Universidade Federal de Viçosa; PAMELA ITAJARA OTTO, Universidade Federal de Santa Maria; MATEUS GUIMARÃES DOS SANTOS, Universidade Federal de Viçosa; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; MARTA FONSECA MARTINS, CNPGL; MARCO ANTONIO MACHADO, CNPGL; JOAO CLAUDIO DO CARMO PANETTO, CNPGL; SIMONE ELIZA FACIONI GUIMARÃES, Universidade Federal de Viçosa.
Título: | Single-step genome-wide association studies and post-GWAS analyses for the number of oocytes and embryos in Gir cattle.
Ano de publicação: | 2023
Fonte/Imprenta: | Mammalian Genome, v. 34, p. 497-508, 2023.
DOI: | https://doi.org/10.1007/s00335-023-10009-0
Idioma: | Inglês
Conteúdo: | Genome-Wide Association Studies (GWAS) are used for identifcation of quantitate trait loci (QTL) and genes associated with several traits. We aimed to identify genomic regions, genes, and biological processes associated with number of total and viable oocytes, and number of embryos in Gir dairy cattle. A dataset with 17,526 follicular aspirations, including the following traits: number of viable oocytes (VO), number of total oocytes (TO), and number of embryos (EMBR) from 1641 Gir donors was provided by fve diferent stock farms. A genotype fle with 2093 animals and 395,524 SNP markers was used to perform a single-step GWAS analysis for each trait. The top 10 windows with the highest percentage of additive genetic variance explained by 100 adjacent SNPs were selected. The genomic regions identifed in our work were overlapped with QTLs from QTL database on chromosomes 1, 2, 5, 6, 7, 8, 9, 13, 17, 18, 20, 21, 22, 24, and 29. These QTLs were classifed as External, Health, Meat and carcass, Production or Reproduction traits, and about 38% were related to Reproduction. In total, 117 genes were identifed, of which 111 were protein-coding genes. Exclusively associations were observed for 42 genes with EMBR, and 1 with TO. Also, 42 genes were in common between VO and TO, 28 between VO and EMBR, and four genes were in common among all traits. In conclusion, great part of the identifed genes plays a functional role in initial embryo development or general cell functions. The protein-coding genes ARNT, EGR1, HIF1A, AHR, and PAX2 are good markers for the production of oocytes and embryos in Gir cattle.
Palavras-Chave: | Associação genômica.
Thesagro: | Bovino; Embrião Animal; Gado Gir; Genética Animal.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Gado de Leite (CNPGL)
Exemplares: | CNPGL - (26049-1) - UPC - AP - DD -  -  -  - DIS