Population structure in three Albanian sheep breeds using 36 single nucleotide polymorphisms

Abstract

Abstract Local sheep breeds are important species for the Albanian livestock farmers. Nienty three unrelated individuals belonging to three local sheep breeds were analyzed for 36 single nucleotide polymorphisms. Results were used to assess population parameters. This study was carried out within the framework of ECONOGENE project, intended to help molecular characterization of Albanian local sheep breeds. Population structure analysis and the assignment of individuals to their reference population were carried out. Almost all of the genetic variations were due to differences between individuals. Mean percentage of individuals was correctly assigned using the Bayesian approach at 45.16%. Factorial component analysis and model-based clustering did not differentiate sheep breeds but displayed a high level of breed admixture. These statements were in concordance with small genetic distance between breeds. We were able to identify individuals purely corresponding to their reference population, who might be used in the breeding programs in the near future, for conserving these valuable breeds.