Desempenho de bezerros em período e aleitamento: estudo de caso da Fazenda Escola Lagoa do Sino

Abstract

This study investigated the performance of Senangus calves, the result of the crossing between matrices ½ Nelore, ½ Angus and Senepol bulls, in Buri, São Paulo. The primary objective was to evaluate the Average Daily Gain (ADG) and weaning weight, considering the genetic influence and management practices in grazing systems. The method adopted involved 16 calves of the F2 generation, subjected to weighing at birth and on november 10th of 2023. The statistical analysis showed an average ADG of 1.37 kg for males and 1.16 kg for females, with statistically significant differences. The remarkable variability in male data suggests different environmental or genetic influences. Compared to previous studies, the observed ADGs are aligned with the literature, indicating substantial development. Weaning at 210 days revealed significant advantages, highlighting the relevance of Nelore's genetic contribution to ponderal growth. Despite the limitations inherent in the study, such as the absence of regular intervals between weighings and the exclusion of some animals due to practical challenges, the valuable results provide contributions to local livestock production. The research suggests new perspectives for improvements in genetic selection and management strategies, emphasizing the importance of broader and more detailed studies in the field of performance of Senangus calves. It is concluded, therefore, that this study not only offers practical insights for the Fazenda Escola Lagoa do Sino , but also drives the need for future more comprehensive investigations to consolidate and expand the results presented, aiming at continuous improvement in livestock production.