I had him to start bringing me the carcasses, heads and all. I pressure cook them until they crumble easily. I use the liquid to cook brown rice, wheat and sometimes scratch. I pack up the fish meal, freeze it and add it in portions to my chickens evening meal.
I was feeding the raw fish remains to my chickens, but they never really ate very much of it. Not a big deal for me because my chicken run is a composting sytem and the uneaten fish remains get buried in the run litter and become worm food, then compost. But it would be better if the chickens ate more of the fish.
Can a person boil the fish remains instead of pressure cooking? I don't have a pressure cooker, but I could boil a big pot of fish guts out on the barbecue grill. I just don't know if the boiling of the fish remains would get to a point where the bones would crumble easily.
I did buy a used food processor for next to nothing from the thrift store. It's just sitting out in the garage. Could I take the boiled fish parts, blend them up and pour the mix over some of their feed? Is that a good idea?