Your dog's requirements depend on it's age and activity level. For a big running bird dog, the Purina won't provide enough calories in the form of fat. You need a minimum of 20% fat to maintain weight during the hunting season and for some dogs that are hunted several times a week, you'll have to add more.

I feed Diamond Performance in season to my bird dogs with good success.
Guaranteed Analysis Crude Protein
30.0%
minimum Crude Fat 20.0% minimum Crude Fiber 3.0% maximum Moisture 10.0% maximum Ash
6.5%
maximum
Calcium
1.3%
minimum
Phosphorus
0.9%
minimum
Omega-6 Fatty Acids 3.4% minimum* Omega-3 Fatty Acids 0.6% minimum* Glucosamine Hydrochloride not less than 300 mg/kg*
Chondroitin Sulfate not less than 100 mg/kg*

Fortunately, my food was manufactured at the Meta, MO plant. I can understand not wanting to feed it again, but my guess is they are probably safer from aflatoxins than the other brands at this point. I'm continuing to feed Diamond.

A high-energy food can be found at Wal-Mart in the form of Maxx-Nutition. I've fed it with success also, but more expensive than the Diamond.

Hope your dog is OK.