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000867456.pdf: 597008 bytes, checksum: 606bb70eef526e50825cab583a7274ce (MD5) / Os genes MC4R, FABP3, DGAT1 e LEPR são de grande importância no estudo das características reprodutivas de suínos, uma vez que, estão relacionados com ingestão alimentar, taxa de crescimento, redução da gordura subcutânea e lactação. Neste sentido, objetivou-se identificar geneticamente polimorfismos do tipo SNP nos genes MC4R (SNPg.1578C>T), FABP3 (SNPg.-240T>C), DGAT1 (SNPg.9422C>T) e LEPR (SNPg.5396A>G; SNPg.5395T>A) em suínos da raça Piau e em duas linhagens maternas comerciais industriais de suínos europeus e chineses. Para isso, foi extraído DNA a partir de sangue periférico de um grupo de 304 suínos. Mediante ARMS-PCR Multiplex, foram amplificados fragmentos específicos que, posteriormente, foram genotipados em sequenciador automático para a realização da eletroforese com corantes fluorescentes. Foram encontrados SNP no gene MC4R (SNPg.1578C>T) e FABP3 (SNPg.-240T>C) para os três grupos genéticos analisados com as três variações genotípicas (CC, TT, CT e TT, TC, CC, respectivamente). O SNP (SNPg.9422C>T) do gene DGAT1 apresentou as três variações genotípicas no grupo genético de suínos europeus (CC, CT e TT). Entretanto, para os grupos genéticos Piau e europeus com raças chinesas apresentaram apenas as duas variações genotípicas de homozigotos (CC e TT). Para o gene LEPR (SNPg.5396A>G; SNPg.5395T>A) os grupos genéticos europeus com raças chinesas e Piau apresentaram os genótipos GG, AA e o grupo genético com raças europeias apresentou as duas variações genotípicas de homozigoto (GG e AA) e apenas um animal apresentou o genótipo heterozigoto (AG e TA). Os polimorfismos dos genes FABP3 (SNPg.-240T>C), DGAT1 (SNPg.9422C>T) apresentaram frequências genotípicas altas para os alelos C em relação aos alelos T e no gene MC4R (SNPg.1578C>T) apresentou menor frequência. Para os polimorfismos do gene LEPR (SNPg.5396A>G e SNPg.5395T>A) apresentou-se fixado nas populações estudadas... / The MC4R, FABP3, DGAT1 and LEPR genes are great importance in the study of traits of swine breeding, since they are related to feed intake, growth rate, reduction of subcutaneous fat and lactation. The aim of this study was to identify SNP in MC4R(SNPg.1578C> T), FABP3 (SNPg.-240T> C), DGAT1 (SNPg.9422C> T) and LEPR (SNPg.5396A> G; SNPg.5395T> A) genes in pigs of Piau breed and two commercial industrial maternal lineages of European and Chinese pigs. For this, DNA was extracted from peripheral blood of 304 pigs. By ARMS-PCR Multiplex, specific fragments were amplified and genotyped in automated sequencer to perform electrophoresis marked with fluorescent dyes. SNP were identified in the MC4R (SNPg.1578C>T) and FABP3 (SNPg.-240T> C) genes the three genotypic variations (CC, TT, CT and TT, TC, CC, respectively) were identified in all genetic groups analyzed. The SNP (SNPg.9422C> T) of DGAT1 gene presented the three genotypic variations (CC, CT and TT) in the European genetic group. However, for the Piau and Europeans with Chinese genetic groups showed only the two homozygous genotypic variations (CC and TT). For LEPR gene (SNPg.5396A>G; SNPg.5395T>A), the European genetic group with Chinese and Piau breeds showed the GG, AA genotypes and the European breeds genetic group showed two genotyps, homozygous variations (GG, AA) and only one heterozygous animal (AG, TA). Polymorphisms of FABP3 (SNPg.-240T>C) and DGAT1 (SNPg.9422C>T) genes showed high genotypic frequency for the C allele when compared to T allele and the MC4R gene (SNPg.1578C>T) showed less frequently. For polymorphisms in the LEPR gene (SNPg.5396A>G; SNPg.5395T>A) had set up in the populations studied, showing low variability within the population. All polymorphisms evaluated by analysis of variance were associated (P <0.05) with the reproductive traits and only the DGAT1 gene was associated (P <0.05) with the production for average weight at weaning and the total litter ...
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.unesp.br:11449/142989 |
| Date | 09 June 2015 |
| Creators | Gondim, Vanja de Souza [UNESP] |
| Contributors | Universidade Estadual Paulista (UNESP), Tonhati, Humberto [UNESP], Antunes, Robson Carlos [UNESP] |
| Publisher | Universidade Estadual Paulista (UNESP) |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | xviii, 52 p. : il. |
| Source | Aleph, reponame:Repositório Institucional da UNESP, instname:Universidade Estadual Paulista, instacron:UNESP |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -1, -1, -1 |
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