I'm going to offer a part answer, and a part explanation. "I don't know". There's a ton of research on soy, there is very little US research on hemp by-products as a feed ingredient. US policy towards hemp means there aren't a lot of byproducts looking for alternate uses, though that's...
If things are that bad, its unlikely one will have access to Nutribalancer, Fish Meal, and whole roasted Soybeans by the bag - unless one lives in Soybean country.
Corn
Oats
Quite curious as to where they got their nutrition figured from for that calculation, as well. While the numbers I...