Evaluación de la densimetría de esponjas artesanales con acetato de medroxiprogesterona y su impacto en la eficiencia reproductiva en cabras.

Abstract

Genetic programs in Ecuador have been limited due to the different conjunctural problems of the region, so it is necessary to adapt biotechnological tools for its execution, being one of these alternatives the handmade intravaginal sponges for estrus synchronization. This study evaluated the effect of sponge density on the release of medroxyprogesterone acetate, reflected in cyclicity, fertility, receptivity, and bacterial microbiota. Twelve Sannen goats were used, divided into three homogeneous groups; they were placed for 9 days with handmade sponges of density 15 and 25, versus the third group of commercial sponges. 48 hours before removing the sponges, 1 ml of D-cloprostenol and 320 IU of eCG were administered. Bacterial microbiota samples were taken before and after sponge use. The sexual behavior was used to evaluate the receptive animals, where within the first 24 hours a greater presence of estrus was observed in density 25 and the cases were equalized with the commercial one at 36 hours. The percentage of pregnancy was 75% in both D25 and commercial, being these values higher than D15 with 50%. In addition, in all treatments Pseudomonas spp. was quantified; there were also specific cases of Coliforms, Staphylococcus aureus, and/or Klebsiella spp.

Keywords: Estrus, Bacterial Microbiota, Biotechnologies, Receptivity, Pregnancy.