I think the statistics I heard was 7% chance of being fertile... I did keep one last year, she looks normal from the outside at least, I may bring her to the vet when I pass by and he can do a diagnosis on her.. otherwise she's good freezer beef.. Some of the reasons I kept her was both her sisters are really productive cows, and it seemed like the bull got the short end of the development stick.. I never was able to band him and he still looked like a steer at weaning time... After 6 weeks old they were raised on different cows, the heifer stayed with her real momma. I did see the hair on her tailhead rubbed off in January... Time will tell.. She's in good shape, so she'll be good eats anyhow