Protocolos de sincronización de celos de corta y larga duración en cabras, por medio de dispositivos intravaginales impregnados con progesterona y la administración por vía intramuscular de hormonas sintéticas en la granja experimental Villa Marina de la Universidad de Pamplona.

Abstract

The present work was carried out at the Villa Marina Experimental Farm of the University of Pamplona, with the main objective of proposing three short and long duration protocols for the synchronization of estrus in goats, through intravaginal devices such as human use buffers and sponges handmade impregnated with progesterone. These devices were inserted at the bottom of the vagina in contact with the cervix with an applicator (22 cm syringe without cap) and intramuscular administration of synthetic hormones (Cloprostenol, estradiol benzoate and equine chorionic gonadotropin). During the investigation, 7 goats with absorbent crossing whose genetic base is Saanen were used, with an average of 4 years of age, 39 Kg and a body condition of 3.0 during the months of May, June and July 2019. Before implementing the protocols for synchronization of jealousy, transrectal and / or transabdominal ultrasounds were performed to verify the status of the females (empty or pregnant). This same procedure was performed 24 hours after the intravaginal devices were removed to differentiate between those in the luteal phase (follicles <6mm and one or several luteal bodies) or in the follicular phase (follicular structures 6 - 9 mm in diameter or follicles concerns). Obtaining as a result follicular structures 6 - 9 mm in diameter at T1 = 40%, T2 = 100% and T3 = 33%. After the ultrasound, the goats that were in the follicular phase were gradually taken to a pen where the Saanen breed reproducer with an average age of 1 year was, observing him for 15 minutes to reconfirm the entry into heat of the female and witness the riding behavior of the male. It is concluded that the short duration protocols are as effective as the long duration protocols as long as the synthetic hormones are administered at the indicated time and the appropriate dose during the estrous cycle phase. In addition, the females who were placed with the tampons for human use did not present vaginal secretions compared to the handmade sponges.