To most people they are lovable pets, but guinea pigs could soon be on the menu at British restaurants after the development of a "superpig" designed to offer diners a nutritious low-fat meal.

The best pre-game meal includes carbohydrates and protein for energy, but is low in fat and fiber, which can slow digestion.

At present, a cheeseburger Happy Meal with fries and a low-fat chocolate milk come in at 700 calories, while other choices, including one with four chicken McNuggets, measure at 390 calories.