Oliveira, Gerson A., JrSantos, Daniel J. A.Cesar, Aline S. M.Boison, Solomon A.Ventura, Ricardo V.Perez, Bruno C.Garcia, José F.Ferraz, José Bento S.Garrick, Dorian J.Impaired fertility in cattle limits the efficiency of livestock production systems. Unraveling the genetic architecture of fertility traits would facilitate their improvement by selection. In this study, we characterized SNP chip haplotypes at QTL blocks then used whole-genome sequencing to fine map genomic regions associated with reproduction in a population of Nellore (Bos indicus) heifers.en-USAntral folliclesCausal variantsHaplotypeHeifer pregnancyWGSArticle