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- Title
Diversity Analysis and Genetic Relationships among Local Brazilian Goat Breeds Using SSR Markers.
- Authors
Menezes, Marcos Paulo Carrera; Martinez, Amparo Martinez; Pimenta Filho, Edgard Cavalcanti; Vega-Pla, Jose Luis; Delgado, Juan Vicente; Arandas, Janaina Kelli Gomes; Rocha, Laura Leandro da; Ribeiro, Maria Norma
- Abstract
Simple Summary: This study aimed to evaluate the genetic diversity of six groups of native Brazilian goats using a panel of single sequence repeats (SSRs). Results indicated a definite genetic differentiation among the Brazilian goat herd, which indicates the existence of at least four breeds according to the international concepts (Moxotó and Repartida; the Grauna and Serrana Azul; Canindé and Marota breeds). The genetic diversity of six Brazilian native goats was reported using molecular markers. Hair samples of 332 animals were collected from different goat breeds (Moxotó, Canindé, Serrana Azul, Marota, Repartida, and Graúna) from five states of Northeast Brazil (Paraíba, Pernambuco, Rio Grande do Norte, Bahia, and Piauí). A panel of 27 microsatellites or single sequence repeats (SSRs) were selected and amplified using a polymerase chain reaction (PCR) technique. All populations showed an average allele number of over six. The mean observed heterozygosity for Brazilian breeds was superior to 0.50. These results demonstrated the high genetic diversity in the studied populations with values ranging from 0.53 (Serrana Azul) to 0.62 (Repartida). The expected average heterozygosity followed the same trend ranging from 0.58 (Serrana Azul) to 0.65 (Repartida), and the values obtained are very similar for all six breeds. The fixation index (Fis) had values under 10% except for the Moxotó breed (13%). The mean expected heterozygosity of all Brazilian populations was over 0.50. Results indicated a within-breed genetic variability in the Brazilian breeds based on the average number of alleles and the average observed heterozygosity. The interbreed genetic diversity values showed proper genetic differentiation among local Brazilian goat breeds.
- Subjects
RECIFE (Brazil); RIO Grande do Norte (Brazil); GOAT breeds; CATTLE genetics; POLYMERASE chain reaction; MICROSATELLITE repeats; HETEROZYGOSITY
- Publication
Animals (2076-2615), 2020, Vol 10, Issue 10, p1842
- ISSN
2076-2615
- Publication type
Article
- DOI
10.3390/ani10101842