Heat Detection Tips

Heat detection requires thorough observation regardless of which aid you choose to use. To help ensure success, follow these tips.


Observe cows for 30 minutes twice a day, early in the morning and early in the evening. Consider observations at noon when mounting activity is high.
Observe cows away from the feed bunk.
Hot weather, high production, crowded conditions or high stress environments may discourage mounting activity. Adjust your observations accordingly.
Cows in standing heat average about 1.5 mounts per hour and are in heat 6-8 hours.
Cows may be willing to mount others even though neither may stand for a mount.
Cows in pre-heat may bawl, be restless or sniff, lick or headbutt other cattle.


Heat Detection Protocols


Click the links below to view the DCRC and ARSBC Protocols:
Dairy Cow Protocol Sheet (PDF)
Dairy Heifer Protocol Sheet (PDF)
Beef Cow & Heifer Protocol Sheet (PDF)
Protocolos de Sincronización de Vacas Lecheras (En español, PDF)
Protocolos de Sincronización de Vaquillas Lecheras (En español, PDF)

Stay current on industry protocols by visiting the DCRC and ARSBC websites.

Other AI Tips

drbradstroudDr. Brad Stroud, DVM, has microscopically evaluated thousands of samples of frozen semen over a 25 year span, and finds that mishandling of semen tends to be a common problem among animal owners and AI Technicians. Learn more about the proper handling of frozen semen by visiting the BioTech Productions website.



The ESTROTECT™ Heat Detector Breeding Advocate Series

Click the links below to view other helpful breeding tips


Know the Visual Signs of Standing Heat (PDF)


Know What Heat Detection Tools Are Available To You (PDF)


Alternative Methods for Confirming Pregnancies (PDF)