Quote:
Originally Posted by cesar49  great post 
does this mean it is not 63 days from the tie? is it true that ovulation occurs a few days after the tie.. or one week after the tie approximately?
thanks..  |
Ovulation happens due to hormones. It happens whether or not the bitch is bred, like in humans. Breeding dates have zip to do with due dates. To get a due date you need to test progesterone levels or if it is not a first breeding you can sometimes count back from prior whelpings to see what day of her cycle she ovulates, usually they are consistent. The eggs mature about 2 days post ovulation but the 63 days starts with ovulation not conception.