I don't change how I feed, except to make account for seasonal change. Unless they are old/sick/inactive I find appetites stay fairly stable. And the 10% is simply a starting point for when you are first feeding raw, until you get a better idea of how much each ferret eats.
Ferrets: Contessa Kitties: Watson, Oskar DIP Sinnead, Vincent, Boris, Zeus and Athena, Willow, Mr. Frodo, Indie, Lucrezia, Judge, Odin, Miss Emily, Suki, Cody, Aristotle, Butterscotch, Frankenfurter. RIP Herne, Ligeia, and Mr. Stubbs
Everyone does it a little different - I enjoy seeing those differences to see where I can improve (or course if they are a reliable source of information, such as the admins or seeing if an admin agrees with how a certain person feeds, etc)
Owned by two crazy boys~
Kodiak Marshall’s Gib - Miles Scarlett’s Happy Dookers Hob