Yes very beneficial, good protein levels, great moisture content, fibre and nutrient levels too. Being cooked they are very easily accessible to the pig. Would stick to a 25% inclusion in diets and not feed to weaners, just growing stock onwards. Regarding the fat levels, the pigs are not maybe receiving the needed protein level to fatten correctly, due to you mixing in 50/50 of feed to BG. I would assume that the fat levels would be back to normal if you feed 75% of your feed to 25% of BG, what protein % is your feed? Just have to be careful in the warmer weather as the grain deteriate quickly and can develope toxins.