First off, I know the bull determines the sex of the calf. But Dun's post on the 19 yr old cow got me thinking :shock: . His cow, at 19, has only had one heifer. I have 2 cows that out of 5 calves they have all been bull calves, I used 3 different bulls one them. I have 2 others that are both 2 for 2 for bull calves, 2 diferent bulls on them . The rest are fairly balanced heifer/bull ratio. Just to throw one more in the mix I have a mare that has had 7 foals, 6 colts and 1 filly. I wondering if there is any theories or facts to explain why some cows throw so many bull calves? Something to do with the cervex openings , position of the uterus? Are there cows out there that throw all heifers?
Thanks,
Alan
Thanks,
Alan