To be honest i think its trial & error i have very limited knowledge with only 6 weeks worth of raw feeding under my belt but i can say that every dog is different as i am finding
My male isnt fairing so well on lambs hearts , so i have got him on chicken wings & pasta , veg & plain mixer, maybe the hearts were a bit to rich for him but he hadnt done a propper solid poo for over a week , so i switched to chicken as the main meat for him
My bitch on the other hand had hearts & chopped in half wings & pasta but she wont eat the veg , she is getting porky on it , so i