Efficiency evaluation of two estrous synchronization protocols on reproductive performance of crossbreed ewe

Department of Reproduction and Obstetrics, Faculty of Veterinary Medicine, Gadjah Mada University, Yogyakarta, Indonesia

^* Corresponding author: arjuna05@ugm.ac.id

Abstract

The study aimed to determine the effectiveness of spon progesterone and CIDR estrous synchronization protocols on the reproductive performance of crossbreed ewe. Fifty crossbreed ewes were divided randomly into two groups. The first group was given estrous synchronization using Controlled Internal Drug Release for 14 days and supplemented with Zn 20 mg/head by peroral. The Second group was given estrous synchronization using a sponge with medroxi progesterone acetate 60 mg for 14 days and supplemented with Zn 20 mg/head by peroral. The estrous observation was conducted every 6-hour interval up to 48 hours after release. Response estrous using CIDR and sponge progesterone with Zn supplementation was 100% and 100%. The quality of estrous response is divided into three groups (low, medium, and maximum). Using the CIDR and sponge progesterone, the estrous quality showed that 76% and 60% of the ewes exhibited medium estrous quality, and 24% and 40% exhibited low estrous quality. The data were analyzed using an independent sample T-test. The T-test analysis showed no significant difference (P>0.05) in the estrous response and estrous quality between the two estrous synchronization protocols.