I fed salmon to my team for years, both raw and cooked with rice. They did really well on it and like others have said bones are not a problem. Something I never could understand though is that sled dogs loved the fish but the dogs we have now ( KBDs) wont touch them.
Our pure KBD is not a fan of fish but his son 1/8 Makenzie River Husky weighs 1/2 again as much and will eat most anything. When my wife had a big team we had a sheep cancellation and I asked her if she needed me to do anything,,,, next thing you know I was putting up 1000 fish for the dogs, Whew,,,,,,