Let’s Look at the “Guaranteed Analysis” in Dry Pet Food
If you look on your pet’s food, you’ll see a label for ingredients and one for “Guaranteed Analysis.” This label is required by the Association of American Feed Control Officials (AAFCO) who administers the testing methods for nutritional guidelines in multiple countries including Australia.
It all gets a bit complex especially when you see terms like “crude protein.”
You probably realize that dry kibble is sold by weight and the larger the bag is, the more kibble you’re getting. What you may not realize is that dry foods vary widely in their moisture content. Some have as little as 6% moisture in them while others have 10% or more.
That moisture level affects the food’s nutritional content.
Here’s an example, if you look at the guaranteed analysis and see what the minimum moisture content is. If it’s 10%, then the food is 90% dry. Next, look at the protein section and see its percentage and divide by 90.
If the dog food label lists protein as 20%, you divide that by 90% and get 22%. That’s the protein level. By the way, that’s pretty good for healthy adult dogs.
You can do the same with fiber, fats, etc.
But the story doesn’t end there. That would be far too simple. First, let’s define what is “crude protein.”