Efecto del uso de cipionato de estradiol o benzoato de estradiol en dos protocolos de sincronización de celos sobre la respuesta reproductiva en novillas brahman en condiciones tropicales.

Abstract

The present investigation was carried out to evaluate the effect of estradiol cypionate (CPE) vs estradiol benzoate (BE) on the rate of presentation of estrus and pregnancy in white and red Brahman heifers under tropical conditions. 100 Brahman heifers with an average initial body weight of 320 kg were used and distributed in a completely random design in two treatments, as follows: BE-heifers receiving estradiol benzoate in the artificial insemination protocol at a fixed time; CPE- heifers receiving estradiol cypionate in the fixed-time artificial insemination protocol. No differences (P>0.05) were found between treatments regarding the use of BE or CPE for the variables; ICP- initial body weight; PCF- final body weight; ECCF- final body condition; FOD- right ovary follicles; FOZ-follicles left ovary; FDOD- dominant follicle right ovary.