Why heat detection matters
Timely breeding keeps calving intervals tight and herds productive. Every missed heat adds days open, so detecting heat accurately has a direct effect on fertility and profitability.
Anoestrus versus silent heat
Anoestrus means the cow is not cycling at all. Silent heat (sub-oestrus) means she is cycling, but the signs are too weak or brief to detect — both delay rebreeding for different reasons.
Common contributing factors
Negative energy balance and low body condition after calving, metabolic stress, poor nutrition and underlying disease can all suppress or mask cycling, especially in early lactation.
