However, for the most accurate nutritional information possible, weigh your exact serving on a to find out its exact weight (in either grams or ounces). Then, enter that amount in as the serving size. This option will ensure that the nutrition facts shown are 100% accurate for your specific amount of Game meat, deer, cooked, roasted. prev next. Serving Size: 1 piece, cooked (yield from 1 lb raw meat, boneless) (340g) 340.