Research shows that high-producing cows show heat for a shorter time than low-producing cows (please see this month’s Research Track for additional study details). In fact, many high-producing cows show heat for only four hours or less, says Milo Wiltbank, reproductive physiologist at the University of Wisconsin. If visual heat detection is not working for cows that give 88 pounds per day or more, try these strategies:
Increase the number of times per day that you visually check for cows in heat.
Use heat-detection aids, like tail chalk.
- Incorporate a timed-AI program, such as Ovsynch.