Bovinocultura de corte: Cria

Abstract

The exponential increase in animal protein production has favored more efficient reproductive practices in beef cattle farming. Consequently, the use of fixed-time artificial insemination (FTAI) in early-maturing heifers of the Nelore breed emerges as an essential strategy to increase productivity, accelerate genetic improvement, and optimize herd pregnancy rates. This study was conducted at Fazenda Santa Luzia, in the municipality of Aruanã, Goiás, evaluating 2,982 early-maturing heifers subjected to hormonal protocols from induction to artificial insemination (AI). The management protocol included the use of progesterone, estradiol, prostaglandin, and eCG, combined with practices to minimize stress, ensuring improved reproductive responses. After four FTAI protocols, a pregnancy rate of 78.5% was achieved. Although this approach requires higher investment and strict nutritional management, it can yield significant economic returns in the long term.