The poultry sector has been in constant development in recent years, consolidating an important factor in the Colombian economy for the economic reactivation of the country. The objective of this work is to support the characterization of growth and feeding profiles in broiler breeders of two commercial genetic lines in the rearing and production period. 50 batches from different breeder farms located in Santander were selected, taking into account the following selection characteristics: 1. Completed batches that were not more than two years old from the two commercial genetic lines, 2. Batches that were in the breeding stage. raise with a minimum of 5 weeks of life of the two genetic lines, and 3. Batches that were in the production stage with a minimum of 45 weeks of life of the two genetic lines. It was evidenced that a darkening between 5 to 10 lux favors the uniformity of the group of individuals regardless of genetics, this is possibly the result of a greater state of stillness of the birds that favors the comfort state and the use of nutrients, which is reflected in optimal physiological development of all individuals. Based on the results obtained in this analysis, it can be concluded that a darkening between 5 and 10 lux favors uniformity and consequently the zootechnical results regardless of the genetic line.