With national beef cattle inventory at lows not seen since the 1950s, the time could be right for producers of Brahman-influenced cattle to adopt a fixed-time artificial insemination method that could add thousands of dollars in net value to a calf crop, according to researchers.

Dr. Gary Williams, a reproductive physiologist at the Texas A&M AgriLife Research Station-Beeville, said the shortage of cattle nationwide has resulted in an increased demand for feedlot calves and a shortage of high-quality beef. This has created the perfect opportunity for beef cattle producers to consider adopting technologies that may improve production efficiency and profits.

“Bee Synch, a synchronization of ovulation technique developed for Bos indicus-influenced beef cows, yields fixed-time artificial insemination pregnancy rates of up to 55 percent and makes the use of AI more feasible for a greater number of producers interested in using superior sires in their breeding program,” Williams said.

The research to develop the procedure was conducted in collaboration with Dr. Randy Stanko, Texas A&M University-Kingsville, and Dr. Marcel Amstalden, Texas A&M University-College Station, and supported by Pfizer Animal Health and Select Sires.

“If you have the right genetic background in feedlot-destined calves and retain ownership through the feedlot, the difference in price at slaughter between those and the average South Texas-sired calf can be as much as $350,” he said. “Multiply that out by hundreds and you are making some serious money. We are seeing some of the national steakhouse chains having problems getting high-quality certified beef. This synchronization method could be a lucrative option for some beef cattle producers to consider.”

The synchronization process is a modified five-day protocol developed previously at Ohio State University, Williams said. That procedure, known as “5-day Co-Synch + CIDR” has been shown to be “highly effective” for synchronization of ovulation in Bos taurus beef cows (English and Continental-derived breeds), yielding fixed-time artificial insemination pregnancy rates of 60 percent or greater.

However, this and similar procedures have not worked well in the Bos indicus-influenced composite breeds and crossbreeds used commonly across the southern U.S. The Bee Synch process that Williams developed calls for an additional injection of prostaglandin at the start of the five-day synchronization protocol, which reduces the lifespan of a hormone-producing structure on the ovary.

“This improves synchrony and boosts pregnancy rates,” Williams said. “Importantly, the modified procedure does not involve additional cattle handling and utilizes synchronization products already available from Pfizer Animal Health.”