Don't confuse breeding dates with
conception. Conception generally occurs 2 days post ovulation. Puppies are generally born 61-64 days after ovulation. The eggs are released with a 24 hour window and mature to allow penetration in another 24-48 hrs. That is why it is better to do progesterone or LH testing before breeding, so you can pinpoint the ovulation window and thus a better whelping window. Sperm can live 5-7 days. So a bitch who is bred on the 11th day, ovulates on the 15th day can still conceive, but you are working off the 15th day for gestation purposes not the 11th. Basically without knowing ovulation date you are looking at a huge window for possible whelping dates. I would rely on your vet's advice concerning whether she believes a section is a good idea or not. If the bitch is not in first stage labor and/or is not exhibiting problems I would tend to wait. |