I'd ferment the flax rather than attempt to use it for fodder. It gets EXTREMELY slimey when it's wet. It could be probably sprouted with the burlap bag method that kassundra uses, but I think that in fodder it would just grow stuff. I've never had any luck sprouting it. It is high fat, but it's high in beneficial fats. chickens fed some flax in their diets lay eggs higher in omega 3 fatty acids, which our diets are deficient in. still, I wouldn't go overboard with it, but a teaspoon a bird a day or so isn't going to hurt them.