I have heard that lower protein and less fat is better for older ferrets.
One of my females got a serious kidney infection months ago and I
attributed this to a diet too high in protein.  The diet I was feeding her
changed the ingredients and I did not realize it at first.  It went from I
think 36% to 40%.  Now I feed Eukanuba adult, Maxicat and Iams.  All Cat
foods.  I wish there was some great ferret food, But all seem to have a
lot of corn even the better brands.  My babies have tried everything;
Marshalls, 8&1, TF, Shepard & Green.  All of them are over three, the ages
are 5, 4, 3, 3.  They run free so I have to have a food they can all eat.
They do not like Shepard & Green for older ferrets?  I also feed Eukanuba
weight control formula to my 3 year old, almost 3lb female.  She will
only eat duck soup (her food soaked in water mixed with babyfood).  Any
suggestions.  This food issue drives me nuts!  I want what is best for
them.  They also tend to like a variety and two of them enjoy switching
foods frequently, particularly after they have had an illness>
 
Thanks,
Kelly
[Posted in FML issue 3349]