Eileen: you can feed bran too much and remember not all of the grain has
been removed from bran and it has a grain value itself. I would try the
biotin in some type of whole oat (I prefer to soak in water as it splits
the grain and makes it easier to digest) and the oil. Give the bran
sparingly if adding other grains. The problem with supplements and easy
keepers is that you have to put them in somethings. I have one client that
makes a carrot mash and puts supplements in that. Be creative but think as
low calorie as possible. Good luck.
Kim Henneman, DVM