I have a 10 yrs of old heifer cow that has had a cracked hoove now for about 8 months I have taken her to the vet at least 4 times on the last visit he put a wood block under the good claw to take the weight off the bad one but it doesn't appear to be getting any better she has had the block for about 2 months does it take this long for something like this to heal? he as cleaned it each time and given antibiotic it has rained here for the last 2 months I am sure that has a lot to do with it also. she is due to calf any day now I don't want to sale her she is my lead cow and has always been in good health and dropped good calves up to this point is there a special mineral that maybe I should be giving her she has access protein tubes salt and plenty water any help is appreciated
thanks
thanks