We've been as high as 10% twinning rate, but we always have some twins every year. Unlike everyone else, we don't mind them at all. The biggest problem we see is that sometimes they get tangled up during birthing, so you've got to keep an eye out. It's nice to have a spare calf around if someone else has a mishap. We will not bring in an outside calf for a cow who loses hers, so a twin is the only lifeline she has.
We had a cow once who had twins first time around. Being a heifer, we felt sorry for her and gave one calf to another cow. Sure enough, the next year she had twins again! We figured she was going to twin herself to death, so we left them on her hoping that would slow her down a bit. Third time around she had a single. So by the time this cow had her fourth birthday, she had produced five live calves. That's not a bad thing. :wink:
So far this year we have had one set of twins out of the first six cows calved. Could be one of those years again! This particular cow needs to be named Lucky though. Just after Christmas we found her down on the ice. I guess she got shoved at the water bowl, slipped, and got on her side in a hole. She spent the night on glare ice at minus 30, and wasn't looking too good in the morning. Hubby was ready to give up on her, but we moved her over a bit, piled a bunch of straw around her, gave her some warm water to drink, and gave her some time. In the afternoon, she stood up. Once she was solid on her feet we took her up to the yard where life is a bit easier and within a week she was back with the herd. Yesterday morning she had a healthy set of twin heifers, unassisted. She was worth the effort.
We've never had a problem with cows not being able to feed twins, but if it's a heifer or a really old girl we'll give her a break and take one calf. Besides, if we end up with a pailfed, it's mine, and the proceeds go to whatever I like. And as Martha Stewart says, "That's a good thing."
