Abstract
Abstract: The objective of this work was to evaluate the usefulness of a subset of 18 single nucleotide polymorphisms (SNPs) for breed identification of Brazilian Crioula, Morada Nova (MN), and Santa Inês (SI) sheep. Data of 588 animals were analyzed with the Structure software. Assignments higher than 90% confidence were observed in 82% of the studied samples. Most of the low-value assignments were observed in MN and SI breeds. Therefore, although there is a high reliability in this subset of 18 SNPs, it is not enough for an unequivocal assignment of the studied breeds, mainly of hair breeds. A more precise panel still needs to be developed for the widespread use in breed assignment.
Highlights
Most Brazilian sheep breeds are considered local genetic resources which are currently facing the challenges associated with uncontrolled crossbreeding (McManus et al, 2010)
A key goal is the identification of a subset of single nucleotide polymorphisms (SNPs) that can be used for accurate breed assignment
Vieira et al (2015) used information generated with the Ovine SNP50 BeadChip (Illumina Inc., San Diego, CA, USA) to identify a subset of SNPs to differentiate between Crioula, Morada Nova, and Santa
Summary
Most Brazilian sheep breeds are considered local genetic resources which are currently facing the challenges associated with uncontrolled crossbreeding (McManus et al, 2010). Resumo – O objetivo deste trabalho foi avaliar a utilidade de um subconjunto de 18 polimorfismos de nucleotídeo único (SNPs) para a certificação das raças de ovinos Crioula Brasileira, Morada Nova (MN) e Santa Inês (SI). How to cite PAIM, T. do P.; MCMANUS, C.; VIEIRA, F.D.; OLIVEIRA, S.R. de M.; FACÓ, O.; AZEVEDO, H.C.; ARAÚJO, A.M. de; MORAES, J.C.F.; YAMAGISHI, M.E.B.; CARNEIRO, P.L.S.; CAETANO, A.R.; PAIVA, S.R. Validation of a customized subset of SNPs for sheep breed assignment in Brazil.
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