Accurate heat detection is the foundation of successful artificial insemination. Missing the correct
timing can lead to failed fertilization, wasted semen, and economic loss.
1. Use a Teaser Boar
Expose the sows to a mature, active boar. The boar’s presence helps stimulate and identify those
ready for insemination.
2. Observe Physical Signs
Look for a red, swollen vulva, mucus discharge, and restlessness. These signs appear just before
and during estrus.
3. Perform the Standing Reflex Test
Apply gentle pressure on the sow’s back. If she stands still and raises her ears, she’s in standing
heat — the ideal time for insemination.
4. Timing
Inseminate the sow about 10–15 minutes after removing the teaser boar, allowing her to calm down
while maintaining peak receptivity.
5. Record Observations
Always document the date, time, and behavior of each sow to ensure precise insemination
scheduling and better reproductive tracking.