Genetic and Genomic Characterization of a New Beef Cattle Composite Breed (Puruna) Developed for Production in Pasture-Based Systems.

ABSTRACT: Purunã is a composite beef cattle breed, developed in Southern Brazil by crossing the Angus, Charolais, Canchim, and Caracu breeds. The goal of this study was to perform the first genetic characterization of the Purunã breed, based on both pedigree and genomic information. For this, 100 randomly selected animals were genotyped, and 11,205 animals born from 1997 to 2019 had pedigree information. The genetic analyses performed were principal component analysis, admixture, phylogenic tree, pedigree and genomic inbreeding, linkage disequilibrium (LD), effective population size (Ne), consistency of the gametic phase, runs of homozygosity (ROH), heterozygosity-enriched regions (HERs), and functional analyses of the ROH and HER regions identified. Our findings indicate that Purunã is more genetic

SUBMITTER: Mulim HA 

PROVIDER: S-EPMC9341487 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature