I had first heard this theory years ago at a reproduction seminar...so I started reading literature on the idea, and it does work out to be reasonably accurate! There was alot of material I couldnt get to because it was for vets....and while not completely absolutely a fail safe way of predicting male/female pups, it seems to work out that way majority of the time. I fully intend to try your system of breeding early in cycle to see if I get more females.....I NEVER have enough females.....everyone wants females! |