Beef, oxtails has 257 kcal per 100 g, with 25.9 g of protein, 0 g of carbs, and 16.5 g of fat.
kcal per 100 g257
Values are from USDA FoodData Central, Food and Nutrient Database for Dietary Studies, FDC ID 2705843 (opens usda.gov in a new tab). A food you buy can differ: check its label.