FWIW, My handler suggested Bil-Jac for my English type show lab. Max was a picky eater and would not eat while crated at dog shows I am now feeding him Bil-Jac daily and he gobbles it up like there is no tomorrow. I also feed it to my Australian Shepherd pup with the same result. Both dogs coats shine and they are very active.
This is NOT a paid commercial for the food, I have no connection with the company or its owners; I simply post it for someone who might need a suggestion for a picky eater. It is expensive and is available,frozen, in the ice-cream section at Wal-Marts.