Heat (oestrus) is the period when a cow or heifer is ready to be bred.
How Long Do Heats Last?
Heat duration can vary between animals:
Average standing heat: 15–18 hours
Typical range: 4 to 30 hours
Silent heats (shorter): 1–3 hours
Silent heats are shorter and can be harder to detect without a system like Moocall HEAT.
Common Signs of Heat
Restlessness
Cow may appear unsettled
Walks around more than usual
May wander away from the herd
Often lowers her head as if searching for her calf
Urination Changes
Unusual urination patterns
Some urinate only a little at a time
Sniffing the air afterwards
Body Language
More alert or “wild” expression
Increased ear movement
Different posture compared to normal behaviour
Mounting Behaviour (Most Important Sign)
Mounting other cows
Allowing other cows to mount her
Each mount lasts 3–7 seconds
May also lick other cows
Vulva and Mucus
Swollen vulva
Clear mucus discharge may be visible
Tail may be slightly raised
Need Help?
If you have questions about heat detection or your Moocall HEAT system, please contact the Moocall support team.
📧 Email: helpdesk@moocall.com
