Genetic Diversity and Population Genetic Structure of a Guzerá (<i>Bos indicus</i>) Meta-Population
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 histo...
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MDPI AG
2021-04-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/11/4/1125 |
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| author | Maria Gabriela C. D. Peixoto Maria Raquel S. Carvalho Andrea A. Egito Raphael S. Steinberg Frank Ângelo T. Bruneli Marco Antônio Machado Fernanda C. Santos Izinara C. Rosse Pablo Augusto S. Fonseca |
| author_facet | Maria Gabriela C. D. Peixoto Maria Raquel S. Carvalho Andrea A. Egito Raphael S. Steinberg Frank Ângelo T. Bruneli Marco Antônio Machado Fernanda C. Santos Izinara C. Rosse Pablo Augusto S. Fonseca |
| author_sort | Maria Gabriela C. D. Peixoto |
| collection | DOAJ |
| description | 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, F<sub>is</sub>, F<sub>it</sub>, and F<sub>st</sub> 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. F<sub>it</sub>, F<sub>is</sub> and F<sub>st</sub> values (95% CI) pointed to a low fixation index, and large genetic diversity: F<sub>it</sub> (Farms = 0.021–0.100; lineages = 0.021–0.100), F<sub>is</sub> (Farms = –0.007–0.076; lineages = −0.014–0.070), and F<sub>st</sub> (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. |
| first_indexed | 2024-03-10T12:19:30Z |
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| id | doaj.art-8135ceff1bee44698737670e46359a40 |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-10T12:19:30Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
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| series | Animals |
| spelling | doaj.art-8135ceff1bee44698737670e46359a402023-11-21T15:36:31ZengMDPI AGAnimals2076-26152021-04-01114112510.3390/ani11041125Genetic Diversity and Population Genetic Structure of a Guzerá (<i>Bos indicus</i>) Meta-PopulationMaria Gabriela C. D. Peixoto0Maria Raquel S. Carvalho1Andrea A. Egito2Raphael S. Steinberg3Frank Ângelo T. Bruneli4Marco Antônio Machado5Fernanda C. Santos6Izinara C. Rosse7Pablo Augusto S. Fonseca8Embrapa Gado de Leite, Juiz de Fora 36038-330, BrazilDepartamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, BrazilEmbrapa Gado de Corte, Campo Grande 79106-550, BrazilDepartamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, BrazilEmbrapa Gado de Leite, Juiz de Fora 36038-330, BrazilEmbrapa Gado de Leite, Juiz de Fora 36038-330, BrazilDepartamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, BrazilDepartamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, BrazilDepartamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, BrazilThe 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, F<sub>is</sub>, F<sub>it</sub>, and F<sub>st</sub> 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. F<sub>it</sub>, F<sub>is</sub> and F<sub>st</sub> values (95% CI) pointed to a low fixation index, and large genetic diversity: F<sub>it</sub> (Farms = 0.021–0.100; lineages = 0.021–0.100), F<sub>is</sub> (Farms = –0.007–0.076; lineages = −0.014–0.070), and F<sub>st</sub> (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.https://www.mdpi.com/2076-2615/11/4/1125Zebu cattlegenetic variabilityartificial selectionsustainable managementlivestock conservation |
| spellingShingle | Maria Gabriela C. D. Peixoto Maria Raquel S. Carvalho Andrea A. Egito Raphael S. Steinberg Frank Ângelo T. Bruneli Marco Antônio Machado Fernanda C. Santos Izinara C. Rosse Pablo Augusto S. Fonseca Genetic Diversity and Population Genetic Structure of a Guzerá (<i>Bos indicus</i>) Meta-Population Animals Zebu cattle genetic variability artificial selection sustainable management livestock conservation |
| title | Genetic Diversity and Population Genetic Structure of a Guzerá (<i>Bos indicus</i>) Meta-Population |
| title_full | Genetic Diversity and Population Genetic Structure of a Guzerá (<i>Bos indicus</i>) Meta-Population |
| title_fullStr | Genetic Diversity and Population Genetic Structure of a Guzerá (<i>Bos indicus</i>) Meta-Population |
| title_full_unstemmed | Genetic Diversity and Population Genetic Structure of a Guzerá (<i>Bos indicus</i>) Meta-Population |
| title_short | Genetic Diversity and Population Genetic Structure of a Guzerá (<i>Bos indicus</i>) Meta-Population |
| title_sort | genetic diversity and population genetic structure of a guzera i bos indicus i meta population |
| topic | Zebu cattle genetic variability artificial selection sustainable management livestock conservation |
| url | https://www.mdpi.com/2076-2615/11/4/1125 |
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