(under the class definition) Subject matter comprising nitrogen containing compositions having an available source of nitrogen other than in a naturally occurring food form (i.e., protein), which nitrogen is available upon ingestion
by an animal, which is usually a ruminant, and to the method of preparing such a composition.
(1) Note. Compositions which contain nitrogen containing compounds which are not disclosed as being for nutritional purposes, e.g., preservation, coloring, etc.., are not proper in this subclass will be classified on some other basis.