INFLUÊNCIA DA COMPOSIÇÃO RACIAL NA TAXA DE CONCEPÇÃO DE NOVILHAS AOS 14 MESES

Abstract

Beef cattle is an activity of great prominence in Brazil, however most of the properties do not use the technological resources properly, however in recent years the IATF has been growing significantly in the national scenario, mainly due to the possibility of carrying out the cross between the Nelore and Aberdeen Angus breeds. With the growing offer of F1 females, many producers choose to use these animals for reproduction, this work compared the results of pregnancy to IATF of two groups from this crossbreeding, with group 1 consisting of 80 heifers ¾ Nellore and ¼ Aberdeen Angus, the group 2 composed of 80 ½ Nellore and ½ Aberdeen Angus heifers. The following results were obtained in group 1 33.7% of pregnancy, group 2 53.7% of pregnancy, which showed that animals with a higher percentage of European blood, have a greater precocity which leads to higher rates of pregnancy.