Relação da origem e idade da matriz sobre o desempenho de frangos de corte pela análise fatorial de dados mistos

Abstract

The increase in global demand for animal protein has contributed to the growth of the poultry industry. In order to meet the population's needs regarding broiler meat production, it is necessary to adopt practices and management strategies starting from the stage that precedes the incubation of fertile eggs (pre-incubation), as broiler performance can be affected from this point onward. Therefore, it is essential to understand the agricultural factors that may influence broiler performance, aiming to support the decision-making and planning processes of both producers and integrating companies. This study aimed to investigate the relationship between agricultural elements—such as breeder age and origin—and the performance of broiler chickens. A total of 520 broiler batches raised and slaughtered between January 2023 and March 2024 were analyzed. The data came from an agroindustry located in the state of Mato Grosso do Sul, Brazil. Correlation tests were performed between quantitative and qualitative variables using Factor Analysis of Mixed Data (FAMD). The analysis revealed five principal components explaining 81.58% of the total data variation. Feed conversion ratio and weight gain variables were found to be negatively correlated, while feed conversion ratio, adjusted feed conversion, and 7-day mortality showed a positive and directly proportional correlation, as did the quantitative variables related to body weights. Transport mortality and 7-day culling were negatively correlated, as were daily weight gain and 7-day culling. Breeder age influenced chick weight at hatch (day 0) and at 7 days of age. Breeder origin showed a stronger association with the quantitative variables of feed conversion ratio, adjusted feed conversion, and transport mortality.