there is a formula of something like 5 % of the dogs ideal weight per day or summat like that.
but in easy terms i have 2 border collies.
if it's chicken for tea, they'll have a half each. if its tripe its about a pound. chicken carcasses? 4 each. beef skirt again about a pound. if i get rabbits, they'll have one each and go without the next day cos i can't be arsed with chopping fluffy bunny up
if they get skinny feed em more, if they get fat feed em less! i would say the dogs weight would show within a week, you wont starve your dog, i promise!
i would start with chicken, and it would go something like this.
smallie type, terrier, toy poodle, dachie or a cat. 1/2 a chicken portion.
cocker, large terrier, whippet. 1 chicken portion.
medium size woofer, springer, collie, toller, etc 1 1/2 (in my world it would be 1 one day 2 the next cos i'm lazy!) or half a chicken.
labragator, goldie, staff, big lurcher, greyhound, gsd etc a whole chicky.
the actual preparation in my place is.
take meat out of fridge, unwrap, hand to dog.