Evaluación de dos protocolos de sincronización de celo con dos sales de estradiol, en vacas de carne de la finca “La Ceiba” ubicada en el corregimiento de Agua Clara - Norte de Santander.

Abstract

The study carried out was related to evaluating two heat synchronization protocols with two estradiol salts, cypionate (CP) and benzoate (BE) using progesterone-impregnated bovine intravaginal devices (DIB) at Finca La Ceiba, Corregimiento de Agua Clara, Norte de Santander. 200 female beef cattle were used as an experimental unit. Them were divided into two samples of 100 cows per group. A protocol was carried out applying the hormones estradiol cypionate and estradiol benzoate in the two groups respectively. All procedures were followed and prostaglandin f2 alpha (PGF 2α) plus equine chorionic gonadotropin (eCG) intramuscularly, plus (1ml) cypionate or benzoate in its absence, with a heat detection aid and finally the artificial insemination at a fixed time (IATF) was carried out 48 hours after the removal of the device. On day 30 after the IATF, was performed an ultrasound to diagnose pregnancy in both groups. The research showed similar percentages in pregnancy, in the cypionate (EPE) group 49% and the benzoate (BE) 44% where no significant differences founded.