Evaluación del Porcentaje de Preñéz en ganado Criollo de Doble Propósito Mediante dos Protocolos de Sincronización en la Parte Baja de la Provincia del Napo.

Abstract

Evaluation of pregnancy rates in dual purpose native cattle, by two synchronization protocols in the lower part of the Napo Province. The native cattle low fertility affects the social economy of the area, using direct observation and descriptive analysis in the Napo Province, the pregnancy percentage in dual purpose native cattle was made through two synchronization protocols, the experimental units were 20 native dual purpose female cattle property of the beneficiaries of the Napo Province. The experimental unit size was a cow with ten replicates per treatment. The results indicate that when using Ovsynch (T1) hormonal implant, the first mating had the highest fertility percentage (70%), and the least percentage of infertility (30%) in comparison to the results of the CIDR protocol which was 40%. The services number per conception was lower in animals with T1 treatment (1.43 services / conception), in relation to those reported for T2 (1.67). Conception rate after the second mating was higher when using the T1 (90%), and decreased to 80% for T2. The cost per synchronized cow with Ovsynch was $ 5.60 and the cost per pregnant cow with this treatment, was $ 45.10, proving to be the most profitable option. It is recommended to use the Ovsynch insemination protocol in the other native cows’ synchronization in order to achiever reproductive efficiency and therefore profitability from livestock.