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Registro Completo
Biblioteca(s): |
Embrapa Gado de Corte; Embrapa Gado de Leite. |
Data corrente: |
13/08/2021 |
Data da última atualização: |
21/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
PEIXOTO, M. G. C. D.; CARVALHO, M. R. S.; EGITO, A. A. do; STEINBERG, R. S.; BRUNELI, F. A. T.; MACHADO, M. A.; SANTOS, F. C.; ROSSE, I. C.; FONSECA, P. A. S. |
Afiliação: |
MARIA GABRIELA CAMPOLINA D PEIXOTO, CNPGL; MARIA RAQUEL S. CARVALHO, Universidade Federal de Minas Gerais; ANDREA ALVES DO EGITO, CNPGC; RAPHAEL S. STEINBERG, Universidade Federal de Minas Gerais; FRANK ANGELO TOMITA BRUNELI, CNPGL; MARCO ANTONIO MACHADO, CNPGL; FERNANDA C. SANTOS, Universidade Federal de Minas Gerais; IZINARA C. ROSSE, Universidade Federal de Ouro Preto; PABLO AUGUSTO S. FONSECA, University of Guelph. |
Título: |
Genetic diversity and population genetic structure of a Guzerá (Bos indicus) meta-population. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Animals, v. 11, 1125, 2021. |
DOI: |
https:// doi.org/10.3390/ani11041125 |
Idioma: |
Inglês |
Conteúdo: |
The Brazilian Guzerá population originated from a few founders introduced from India. These animals adapted well to the harsh environments in Brazil, were selected for beef, milk, or dual-purpose (beef and milk), and were extensively used to produce crossbred animals. Here, the impact of these historical events with regard to the population structure and genetic diversity in a Guzerá meta-population was evaluated. DNA samples of 744 animals (one dairy, nine dual-purpose, and five beef herds) were genotyped for 21 microsatellite loci. Ho, He, PIC, Fis, Fit, and Fst estimates were obtained considering either farms or lineages as subpopulations. Mean Ho (0.73) and PIC (0.75) suggest that genetic diversity was efficiently conserved. Fit, Fis and Fst values (95% CI) pointed to a low fixation index, and large genetic diversity: Fit (Farms = 0.021?0.100; lineages = 0.021?0.100), Fis (Farms = ?0.007?0.076; lineages = ��0.014?0.070), and Fst (Farms = 0.0237?0.032; lineages = 0.029? 0.038). The dual-purpose herds/selection lines are the most uniform subpopulation, while the beef one preserved larger amounts of genetic diversity among herds. In addition, the dairy herd showed to be genetically distant from other herds. Taken together, these results suggest that this Guzerá meta-population has high genetic diversity, a low degree of population subdivision, and a low inbreeding level. |
Palavras-Chave: |
Diversidade genética; Estrutura genética; Genetic variability; Livestock conservation; Seleção artificial; Sustainable management. |
Thesagro: |
Bovino; Gado Zebu; Variação Genética. |
Thesaurus NAL: |
Artificial selection. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225142/1/Genetic-diversity.pdf
|
Marc: |
LEADER 02450naa a2200349 a 4500 001 2133527 005 2021-09-21 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps:// doi.org/10.3390/ani11041125$2DOI 100 1 $aPEIXOTO, M. G. C. D. 245 $aGenetic diversity and population genetic structure of a Guzerá (Bos indicus) meta-population.$h[electronic resource] 260 $c2021 520 $aThe Brazilian Guzerá population originated from a few founders introduced from India. These animals adapted well to the harsh environments in Brazil, were selected for beef, milk, or dual-purpose (beef and milk), and were extensively used to produce crossbred animals. Here, the impact of these historical events with regard to the population structure and genetic diversity in a Guzerá meta-population was evaluated. DNA samples of 744 animals (one dairy, nine dual-purpose, and five beef herds) were genotyped for 21 microsatellite loci. Ho, He, PIC, Fis, Fit, and Fst estimates were obtained considering either farms or lineages as subpopulations. Mean Ho (0.73) and PIC (0.75) suggest that genetic diversity was efficiently conserved. Fit, Fis and Fst values (95% CI) pointed to a low fixation index, and large genetic diversity: Fit (Farms = 0.021?0.100; lineages = 0.021?0.100), Fis (Farms = ?0.007?0.076; lineages = ��0.014?0.070), and Fst (Farms = 0.0237?0.032; lineages = 0.029? 0.038). The dual-purpose herds/selection lines are the most uniform subpopulation, while the beef one preserved larger amounts of genetic diversity among herds. In addition, the dairy herd showed to be genetically distant from other herds. Taken together, these results suggest that this Guzerá meta-population has high genetic diversity, a low degree of population subdivision, and a low inbreeding level. 650 $aArtificial selection 650 $aBovino 650 $aGado Zebu 650 $aVariação Genética 653 $aDiversidade genética 653 $aEstrutura genética 653 $aGenetic variability 653 $aLivestock conservation 653 $aSeleção artificial 653 $aSustainable management 700 1 $aCARVALHO, M. R. S. 700 1 $aEGITO, A. A. do 700 1 $aSTEINBERG, R. S. 700 1 $aBRUNELI, F. A. T. 700 1 $aMACHADO, M. A. 700 1 $aSANTOS, F. C. 700 1 $aROSSE, I. C. 700 1 $aFONSECA, P. A. S. 773 $tAnimals$gv. 11, 1125, 2021.
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Embrapa Gado de Leite (CNPGL) |
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