Annamaet 14 to 18 ppm
I am not sure if that is the same for the grain free varieties. I use the grain inclusive these days. It works better for my older Labs generally. They also get fresh food, Pro Plan, and sometimes canned fish or even canned dog food as a topper. So far, so good.

Grain Free Pinnacle Salmon and Potato 11 mg/kg
Grain Free Pinnacle Turkey and Potato 11 mg/kg
Acana Duck and Bartlett Pear Limited Ingredient 11 mg/kg
Acana Lamb and Okanagan Apple Limited Ingredient 12 mg/kg
Acana pork and Butternut Squash Limited Ingredient 12 mg/kg