This is what I use-Diamond Naturals Dry Food for Adult Dogs, Lamb and Rice Formula-
http://www.amazon.com/Diamond-Naturals-Adult-Formula-Pound/dp/B0018CIOJ8/ref=sr_1_2?ie=UTF8&qid=1425353587&sr=8-2&keywords=diamond+lamb+and+rice+dog+food
This might be of interest-
http://www.havahartwireless.com/resources/choose-the-best-dog-food
I used to feed Diamond Naturals (and Taste of the Wild— also made by them) but became concerned by some recall and qc issues. My lab got sick midway through a bag of TotW (had been eating it regularly for over a year) and wouldn’t eat the rest of the bag. I tried the two Costco (natures domain and Kirkland) but her coat didn’t look or feel as nice. I’ve been feeding NutriSource ever since with good results. Good MN company, isn’t ridiculously expensive, and both my dog and dogfoodadvisor.com like it.