Using Ovsynch protocol versus Cosynch protocol in dairy cows

• Main Authors: Ion Valeriu Caraba, Serafin Velicevici
• Format: Article
• Language: English
• Published: Agroprint Timisoara 2013-10-01
• Series: Scientific Papers Animal Science and Biotechnologies
• Subjects: ovsynch; cosynch; dairy cows; fertility.
• Online Access: http://spasb.ro/index.php/spasb/article/view/142

As a research on the reproductive physiology and endocrinology surrounding the estrous cycle in dairy cattle has been compiled, several estrous synchronization programs have been developed for use with dairy cows. These include several programs that facilitate the mass breeding of all animals at a predetermined time (timed-AI) rather than the detection of estrus. We studied on 15 dary cows which were synchronized by Ovsynch and Cosynch programs. The estrus response for cows in Ovsynch protocol was of 63%. Pregnancy per insemination at 60 days was of 25%. Estrus response for cow in Cosynch protocol was of 57%. Pregnancy per insemination at 60 days was of 57%. Synchronization of ovulation using Ovsynch protocols can provide an effective way to manage reproduction in lactating dairy cows by eliminating the need for estrus detection. These are really efficient management programs for TAI of dairy cows that are able to reduce both the labour costs and the extra handling to daily estrus detection and AI.