Dog Food Without Chicken

HELP! my dog fussy?
I have three dogs, two of them eat food without any problems but my third is very demanding and I have problems to eat with him. It is a Daschund and 1. My boyfriend and I have tried all kinds of high quality food for dogs and I can not eat any Dog Food, with nothing mixed in it, such as salmon or chicken broth. He is not ill, it is very healthy, vet said he expects a good, so I can not understand the problem. We tested food such as Evo, a native of California, timberowolf, and now we are the taste of nature .. Suggestions? please help ..
you need to let go at least a few days without food if it is so difficult. If you have not eaten in three days, feeding him something he likes, but not for another three days.