You could feed them both. It's a good idea to alternate between 3-4 different foods to give a well rounded diet and to make sure that they aren't deficient in anything. Different meat sources and different suppliers.
Good luck with your pup!
Tara, IWS 5/17/02 -
Dante, Male Brindle 3/18/10 - Adopt 5/13/13
At the Rainbow Bridge, Markus and Terramoto