Mutações putativo-causais em genes candidatos associadas à fertilidade de bovinos de corte e bubalinos

• Ano de defesa: 2015
• Autor(a) principal: Camargo, Gregório Miguel Ferreira de [UNESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Bovino de corte; Bufalo; Polimorfismo (Genetica); Genes; Reprodução animal; Genetica animal; Genomics
• Link de acesso: http://hdl.handle.net/11449/128014; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/18-09-2015/000848614.pdf

Reproductive and andrological traits have an important participation in the profitability of ruminants production systems. The search for putative causative mutations in candidate genes may increase the accuracy of genomic values predictions when inserted in low density chips at a lower cost. So, the aim of this study was to identify mutations in candidate genes and a chromossomal anomaly associated to fertility in cattle and buffaloes males and females. The laboratorial techniques used to identify were PCR-sequencing, qPCR and Taqman probes. The JY-1 gene presented an interspecific indel that causes alteration on the frameshift in the aminoacids comparing cattle and buffaloes that might be associated to reproductive differences between the two species. The genes JY-1 and NCOA2 had significant polymorphisms for precocity at 16 months, days to calving and age at first calving in Nelore cows. The Y anomaly was detected in a low frequency in the Brahman cow population and it is not associated to the fertility. The genes LOC100138021, CENPI, TAF7L, CYLC1, TEX11, AR, UXT, PLAG1 and SPACA5 had SNPs associated with production of normal sperm and scrotal circumference in Tropical Composite and Brahman cattle. So, putative SNPs to customize low density chips were found to fertility traits in cattle