There is a variety of reasons for rotational feeding. As Marie mentioned, in case of recall or any other reason your usual food is not available, you can just switch to whatever was next on your list. As Emily mentioned, it helps keep the gut used to getting different things. One of the things going on here that you may not be aware of is that a particular set of nutrients feeds a particular population of probiotics. By varying nutrition, you maximize the number of different strains of probiotics that can live in the gut. This provides a huge boost to the immune system, since a huge part of the immune system is the gut. Also, all dog food brands have certain things that they are high in and certain things they are low in. By switching brands, you make sure your dog isn’t always exposed to those same levels of the same nutrients.
