Here are the labeling requirements:One would expect a food called "Salmon TunaChovy" to be 25% fish based. But I know from reading ingredients that some 'beef' flavored foods have fish in them. And some food called Seafood has beef, chicken as the 2nd ingredient.
Also, I see the word "dry weight". Wonder if it is 25% wet food cased (dry matter basis conversion--to figure out how much carbohydrates a food *really* has--even if "grain free"). Maybe that's the difference.
So 'Salmon TunaChovy" only NEEDS to be 3% salmon, 3% Tuna, and 3% anchovies. Of course - since anchovy technically is not in the name, I guess it doesn't need to be an ingredient. :dk:Label Basics
There are special labeling requirements for pet food, all of which are contained in the annually revised Official Publication of AAFCO.2 While AAFCO does not regulate pet food, it does provide model regulations and standards that are followed by U.S. pet food makers.
The name of the food provides the first indication of the food’s content. The use of the terms “all” or “100%” cannot be used “if the product contains more than one ingredient, not including water sufficient for processing, decharacterizing agents, or trace amounts of preservatives and condiments.”
The “95% Rule” applies when the ingredient(s) derived from animals, poultry, or fish constitutes at least 95% or more of the total weight of the product (or 70% excluding water for processing). Because all-meat diets are not nutritionally balanced and cause severe deficiencies if fed exclusively, they fell out of favor for many years. However, due to rising consumer interest in high quality meat products, several companies are now promoting 95% and 100% canned meats as a supplemental feeding option.
The “dinner” product is defined by the “25% Rule,” which applies when “an ingredient or a combination of ingredients constitutes at least 25% of the weight of the product (excluding water sufficient for processing)”, or at least 10% of the dry matter weight; and a descriptor such as “recipe,” “platter,” “entree,” and “formula.” A combination of ingredients included in the product name is permissible when each ingredient comprises at least 3% of the product weight, excluding water for processing, and the ingredient names appear in descending order by weight.
The “With” rule allows an ingredient name to appear on the label, such as “with real chicken,” as long as each such ingredient constitutes at least 3% of the food by weight, excluding water for processing.
The “flavor” rule allows a food to be designated as a certain flavor as long as the ingredient(s) are sufficient to “impart a distinctive characteristic” to the food. Thus, a “beef flavor” food may contain a small quantity of digest or other extract of tissues from cattle, or even an artificial flavor, without containing any actual beef meat at all.
I expect that's why you're not finding menadione as an ingredient in so many foods. The ingredients aren't, and don't add up to, 25%.
Oh - here's the link I used for the info, but it's available a number of places: http://www.bornfreeusa.org/facts.php?more=1&p=359