Genetic diversity of Brazilian pig breeds evidenced by microsatellite markers

Genetic diversity of Brazilian pig breeds evidenced by microsatellite markers

The genetic diversity within and between five genetic groups of pigs in Brazil, ( n = 182) represented by three naturalized breeds (Moura, Piau and Monteiro), one commercial breed (Landrace) and one commercial composite (MS60) was estimated using 28 microsatellite markers. The genetic structure with...

Full description

Saved in:
Bibliographic Details
Published in:Livestock science Vol. 123; no. 1; pp. 8 - 15
Main Authors: Sollero, B.P., Paiva, S.R., Faria, D.A., Guimarães, S.E.F., Castro, S.T.R., Egito, A.A., Albuquerque, M.S.M., Piovezan, U., Bertani, G.R., Mariante, A. da S.
Format: Journal Article
Language:English
Published: Elsevier B.V 01-07-2009
Amsterdam; New York: Elsevier
Subjects:
Conservation genetics
Farm animal genetic resources
genetic distance
genetic markers
genetic variation
heterozygosity
landraces
microsatellite repeats
Molecular markers
molecular sequence data
paternity
rare breeds
Sus scrofa
swine
swine breeds
Brazil
Molecular markers
Farm animal genetic resources
Sus scrofa
Conservation genetics
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The genetic diversity within and between five genetic groups of pigs in Brazil, ( n = 182) represented by three naturalized breeds (Moura, Piau and Monteiro), one commercial breed (Landrace) and one commercial composite (MS60) was estimated using 28 microsatellite markers. The genetic structure within these groups was also tested. The results showed that 14% of the total variation ( p < 0.001) observed was due to differences between breeds. Based on the UPGMA dendrogram obtained from Nei's D A genetic distance it was possible to differentiate three groups. The first was formed by the commercial breed, Landrace, and the composite MS60, the second by two of the naturalized breeds (Piau and Monteiro) and the third by the Moura naturalized breed. Within breed variability indicated that the Piau breed had the highest value of expected heterozygosity among the naturalized breeds, whereas Landrace had the highest value between the commercial breeds. Using a Bayesian analysis, a population substructure was identified in Monteiro and Piau breeds. Furthermore, lower values for breed certification probability were observed for these two breeds as well as a significant genetic differentiation between the Moura and Landrace breeds and the composite MS60. The microsatellite marker panel possessed high precision (99.99%) when used in paternity exclusion in naturalized pig breeds and proved to be an effective tool for the management and conservation of naturalized pig breeds.
Bibliography:http://dx.doi.org/10.1016/j.livsci.2008.09.025
ISSN:1871-1413
1878-0490
DOI:10.1016/j.livsci.2008.09.025