Q: Is fiber just "filler"?

A: One of the most common misconceptions about feeding field trial dogs is that the fiber is either "just filler" or not important in the makeup of the food. However, fiber is very active in a dog's intestine and plays a critical role in maintaining intestinal health. Like fat, the source of the fiber used in the food is very important. Fiber ferments in the intestine, and some types of fiber provide too much fermentation, which can lead to excess gas, while others provide too little fermentation, which can cause constipation and does a poor job of "feeding" the millions of cells that line the intestine and colon.

The ideal fiber source for helping maintain a healthy intestinal tract is one that is moderately fermentable. The level of fiber in the food should be between 4% and 7%, and it should come from a moderately fermentable source, like beet pulp. This fermentation level, along with the fiber bulk, will help ensure a quick, clean bowel movement so the dog can spend a minimum time with this task and get back to his work.