by Sprkplug "if any of this new formulation was tested in a real world environment, by folks who handle this feed everyday, and not just by a well meaning group of nutritionists."

While not on this product there has been lots of testing of the basic contents as they relate to proteins , carbohydrates and lipids in pond fish. We had a presentation at the last conf. on that.

I have done a good deal of checking on the topic (and gave the presentation) for the same reasons you are asking. I can tell you that I have no concern with these changes as to feeding my fish.

Carbs (the source of your question) are not beneficial to most pond predator fishes (LMB ,BG , etc) . From a nutrition point of view it is the protein and lipid sources that are key and the fish meal source is key. HSB can use carbs and the data shows that they can use even low quality sources. HSB can get obese in tanks fed the same diets as the other predators because they can also use the carbs.

See this http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=266697&page=2