Relação dos fatores agropecuários e condenações de carcaças de frangos de corte pela análise fatorial de dados mistos

Abstract

The application of new technologies in poultry farming makes it possible to increase national production and place Brazil in a prominent position worldwide. However, due to structural and climatic conditions, such technologies can be adapted during the incorporation process, which leads to challenges in the field and consequently to an increase in carcass condemnations observed by the Federal Inspection System (SIF). In view of this, it is important to know the profile of carcass condemnations, in order to contribute to decision-making in the field and in the slaughterhouses. The present work was carried out with the objective of relating the qualitative factors of sex, hatchery of origin, type of acclimatization of the aviaries and lineage to the condemnations of carcass of broiler chickens with the aid of factorial analysis of mixed data. 445 batches of griller chickens slaughtered between January 2021 and August 2022 in an agroindustry in the state of Mato Grosso do Sul were analyzed. Five main components responsible for explaining 69.83% of the total data variation were found. It was observed that the technological level of the aviaries evaluated was the factor that most explained the diversity in condemnations, with climatecontrolled aviaries being worse for carcass condemnations. For the sex variable, it was found that batches of male chickens were better for condemnations, lower age at slaughter, higher daily weight gain and better feed conversion. Regarding hatcheries of origin, it was possible to verify that batches with mixed origin, that is, from more than one hatchery in the same nucleus, resulted in a greater impact on condemnations at slaughter. The Ross95 lineage had less impact on carcass condemnations when compared to the other lineages. Comparing the data set, it was possible to verify that housing batches of Ross95 males, with a single origin from a hatchery in a positive pressure aviary, results in the best scenario for reducing carcass condemnations in the reality studied.