http://www.nationalchickencouncil.org/about-the-industry/chickopedia/ 这一定是另一种衡量系统里来的名称 Natural
Under USDA regulations, a “natural” product has no artificial ingredients, coloring ingredients, or chemical preservatives, and is minimally processed, just enough to get it ready to be cooked. Most ready-to-cook chicken can be labeled “natural,” if processors choose to do so.
Natural and All Natural
Beware the ubiquitous “natural” and “all natural” food labels. In actuality, the USDA has defined the term just for fresh meat, stipulating only that no synthetic substances have been added to the cut. Producers may thus raise their chickens under the most unnatural circumstances on the most unnatural diets, inject birds with broth during processing, and still put the claim on their packaging.