Canadian Brand. FirstMate Chicken Meal with Blueberries uses free run, Canadian chicken as a single meat protein with a high inclusion of blueberries for their antioxidant benefits. This formula is ideal for cats and kittens of all life stages, everyday feeding and sensitivities. FirstMate Chicken Meal with Blueberries is a low carb, grain & gluten free formula that is low in ash & magnesium.