By Dr. Jean Hofve Recently there has been renewed interest in fiber as a pet food ingredient. One pet food manufacturer published an article on the Internet condemning beet pulp in pet food as unhealthy if not downright dangerous, while others are touting the benefits of the latest fiber source, pecan shells. There is a lot of myth and misunderstanding concerning fiber, so let's take a closer look at this controversial ingredient. The term "fiber" (or "roughage") applies to complex carbohydrates that are resistant to mammalian digestive enzymes, although certain ...