How to calculate calving date?
Calving date, how to calculate how long a cow carries a calf, whether a calf is carried over or under, can a cow carry a calf over a month after the calving date, and what are the dangers of a calf being under-carried? Is there a formula for accurately calculating the calving date? Yes, there is: here it is (A + 11), where A is the calving number. Add these two numbers together to get the calving date, and the month is calculated using the following formula (B - 3), where B is the month of calving. The numbers 11 and 3 in these formulas remain constant, regardless of the dates.