I have two Charlais bulls that are 2 and 3 years old. Both of them seem to have either a deformity on the outside front toes or something going on around the coronary band. The splits are coming down from the band itself, not coming up from point of toe. These bulls are half brothers. The other bulls not from the same sire are fine. The vet checked them and couldn't figure out what might be causing the problem. Could this be a deficiency in minerals? Could this be a hereditary defect that could be passed on to the calves that are due this spring? This is a very crippling problem. The vet also said that it isn't foot rot and there was no signs of absess. Any ideas?