Comparación de dos protocolos de sincronización del celo a tiempo fijo en vacas mejoradas de la Estación Agropecuaria de la UTPL

Abstract

Abstract: The objective of this technical project was to evaluate two synchronization protocols of the fixed-time heat in improved cows from the UTPL Agricultural Station, comparing their reproductive efficiency. A Completely Randomized Design was used with a control group. and two hormonal treatments, each with 5 animals of 4 years and 350 kg on average, and a body condition of 2.5 to 3 (scale 1 to 5.) Both treatments showed 100% manifest heat, the ovary index did not present significant differences (P=0.533) between the To, T1 and T2 treatments (14.08 ± 0.70, 13.60 ± 0.89 and 13.54 ± 0.85), respectively. He Pregnancy percentage at the first service was 40% in the control group and 60% in the T1 and T2 treatments. Individual costs per protocol and per pregnant cow varied between the treatments, being $85.5 and $142.5 for T1, and $93.2 and $155.3 for T2. In conclusion, Both protocols proved to be ideal for implementation, achieving pregnancy rates. 60% per treatment, supporting its reproductive efficiency.