Análise das provas de desempenho de touros da raça canchim no estado de São Paulo

Abstract

The Canchim breed who was developed in Brazil in 1940 at São Carlos, São Paulo it is composed by 5/8 Charolais e 3/8 Zebu that have scientific formation because it was tested in the inverse proportion, as the breed was developed in Brazil, it is needed that the animals pass by tests to select the desired characteristics. Performance testing is very important in this selection because it standardizes the environmental conditions in breeding, aiming for greater reliability in the genetic differences generated. A performance evaluation test was created for the Canchim breed in which more than a Thousand animals have been evaluated since its creation. Therefore, this study proposed to analyze the performance of this breed through the results obtained in the performance tests held in the Angatuba/Paranapanema region and the Zootechnical Institute of Sertãozinho. To perform these analyses, it was necessary to use the results of the tests performed, in adition to differentiating the characteristics of these tests for each location. The performance test - Prova Canchim de Avaliação de Desempenho (PCAD) ILMA - has differences in the weightings and in the characteristics analyzed to compose the final index that the national performance evaluation test uses, directly impacting the analyses and results. The results of the PCAD ILMA of 2021 was influenced by profitability, a characteristic that obtained greater weight in the general classification index, whereas in the year 2022 the characteristic that influenced the result was the daily weight gain. Finally, the results of the Canchim National Performance Evaluation Test had no influence of a specific characteristic of the index, so there was a change in the percentage of characteristics of the final index in the year 2021 to 2022, aiming at a better selection of animals.