Evaluación de los parámetros reproductivos de vacas Brahman, Brangus y Charbray de la hacienda la Victoria

Abstract

Livestock in Ecuador is one of the most outstanding and important economic activities. Being an activity with high profitability, cattle producers have sought several strategies to have high production rates, thus applying techniques for the optimization of reproductive management. Reproductive efficiency (RE) evaluates the behavior of reproduction from rigorous records, which aims to assess outstanding parameters such as age at first service (AFS), age of first birth (AFB) and calving interval (CI). The present research evaluated these three parameters from the reproductive records of the 2021 period belonging to 189 meat-producing cattle females belonging to the herds of the Brahman (63 copies), Brangus (63 copies) and Charbray (63 copies) breeds belonging to La Victoria Inn, located at km 10 of the Bucay – Naranjito road, General Antonio Elizalde Canton, Guayas Province. In general, in this study the values obtained for the AFS breeds Brahman (26.0317 ± 4.7522 months), Brangus (25.5190 ± 4.5042 months) and Charbray (24.5952 ± 2.3779 months). Similarly, AFB values were obtained from the herds of Brahman (36.1143 ± 4.8247 months), Brangus (35.5556 ± 4.5358 months) and Charbray (34.0476 ± 2.4850 months). The most significant dispersion lies in the IBB values in the Brahman herds (450.9683 ± 75.5767 days), Brangus (473.2381 ± 91.2774 days) and Charbray (410.8254 ± 51.9645 days). All reproductive parameters studied in this research were within the ideal parameter, indicating good reproductive efficiency. In addition, the Charbray breed herd is highlighted as the one with an excellent performance in the RE. Similarly, the race factor is defined as one of the conditioning factors for the RE, in addition to the (tropical) climate.