Consequences of Long-term Commitment to Estrus Synchronization

Jul 21, 2022

By Dr. Pedro Fontes

The use of estrus synchronization programs has substantially increased over the last few decades. These programs allow cattle producers to manipulate the estrous cycle of cows and heifers, facilitating the adoption of biotechnologies such as artificial insemination (AI). Cow-calf operations can combine estrus synchronization with fixed-time artificial insemination (FTAI) and AI all cows from a given herd at a pre-determined time without the need of estrus detection. The development of these estrus synchronization protocols has significantly impacted reproductive management commercially, leading to a remarkable global increase in the use of AI by beef cattle producers. In fact, the number of beef semen straws sold yearly in the United States increased by 145% between 1990 to 2017.

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Studies have repeatedly evaluated the effectiveness of estrus synchronization protocols in combination with FTAI, and pregnancy rates usually range between 40-60%. These are great numbers considering that approximately half of our females are becoming pregnant on the first day of the breeding season. Nevertheless, there is still some variation in . . .

Source : osu.edu

Video: Why Swine Field Research Matters - Dr. Stephen Frazer

In this episode of The Swine it Podcast Show Canada, Dr. Stephen Frazer, swine veterinarian at Demeter Services Vétérinaires, explains how field research connects university science with real commercial swine production. He discusses research design, economic impact, external validity, health challenges, and practical implementation on farms. Dr. Frazer also shares how applied research helps producers stay competitive with modern genetics and production systems. Listen now on all major platforms!

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Meet the guest: Dr. Stephen Frazer / stephen-frazer-5769b7141 completed both a Master of Veterinary Science and a Doctor of Veterinary Medicine at the Université de Montréal. Currently working as a swine veterinarian at Demeter Services Vétérinaires, Dr. Frazer focuses on applied field research, production health, and practical strategies that improve commercial swine operations. Learn more about field research and swine production by listening to Dr. Stephen Frazer on The Swine it Podcast Show Canada, available on all major platforms.