Genomic Selection in Nelore Cattle in Brazil

Abstract Text: Despite a favorable business model, genomic selection is still not a popular tool for genetic improvement of Nelore cattle in Brazil mainly due to the lack of a cost-effective strategy for its application. Different independent Nelore breeding programs have already developed prediction equations for usual and difficult/expensive to measure traits. Unfortunately, some programs are using genomic predictions more as a marketing than a selection tool. Different breeding schemes were compared aiming to envisage opportunities to better apply genomic selection in Nelore cattle. Breeding schemes combining genomic selection and reproductive technologies provided the best results in terms of genetic gain. Benefit of using genomic selection in the Nelore breed is also expected to occur in commercial herds, allowing them to buy young replacement bulls with more reliable proofs for a comprehensive number of economically relevant traits.

Keywords: Bos indicus, breeding scheme, genomic prediction