Resumen en inglés

The present study, Determine the genetic load in dual-purpose livestock by means of QTL's genes in bull populations of the Montes de Maria region of the Bolívar department. It uses a quantitative methodology, the study focuses on scientific experimentation from a sampling of five localities: San Juan Nepomuceno 12 individuals, San Jacinto 10 individuals, Córdoba 10 individuals, El Guamo 10 individuals, Zambrano 24 individuals which presented a management of genetic selection by morphometric criteria and whose livestock present a known genealogy. In the result obtained, it is found that the bulls with the codes GU002, GU003, GU007, GU008 and GU010 from the municipality of Guamo, CO002, CO003, CO004, CO006 and CO008 from the municipality of Córdoba, ZN014, ZN021 and ZN024 from the municipality of Zambrano , SJ001, SJ002, SJ004, SJ005, SJ006 and SJ009 from San Jacinto, SJN002, SJN006, SJN010 and SJN012 from the municipality of San Juan Nepomuceno do not contain the QTL's genes for Meat and for milk in the proportions and minimum quantities necessary, if the intention is to seek a dual purpose livestock for the region.