Evaluación de dos protocolos de sincronización en ovejas de pelo de la Estación Experimental Pastaza

Abstract

The objective of this research was to evaluate two synchronization protocols in hair sheep, which was developed at Pastaza Experimental Station belonging to Escuela Superior Politécnica de Chimborazo, located at Km. 34 way Puyo - Macas. The methodology included the analysis of the experimental units, which were 20 females, 10 of the Pelibuey breed and 10 of the Blackbelly breed, selected under the same reproductive, sanitary and nutritional conditions. For the statistical evaluation of the variables to be analyzed, the treatments used were: TI: Intravaginal sponge + eCG, Pelibuey breed, T2: CIDR + eCG, Pelibuey breed, T3: Intravaginal sponge + eCG, Blackbelly breed and T4: CIDR + eCG, Blackbelly breed, with 5 replicates per treatment, giving a total of 20 experimental units. It was worked with a Completely Randomized Design (CRD) with combinatorial arrangement of factors and chi-square tests. The results showed that a greater presence of estrus was obtained with the protocol of intravaginal sponges, determining 70%, while for the protocol of devices, 40% was determined; meanwhile, for the total conception rate, 50% of pregnancy was recorded for the intravaginal sponges, while for the devices, a value of 12.5% was obtained. It is concluded that the best protocol for estrus synchronization and conception rate is the intravaginal sponge protocol since it obtained a superior value compared to intravaginal devices, since it also has the highest cost/benefit of 1.78, that is, for each dollar invested, a return of 78% is expected. It is recommended that research be conducted to find the most efficient protocol and management for this region.