Yardbird
Well-Known Member
One mineral supplement supplies in a "dose" 175 mg copper 525 mg zinc 6g magnesium 10 mg biotin etc...etc.... Another balancer in one serving supplies 80 mg copper 15 mg biotin 3 mg magnesium 300 zinc, plus vits a and d etc......But how much does a horse need?How dos an owner choose which to feed?