The rotisserie size needed to cook a whole lamb depends on the size and weight of the lamb. Most lambs weigh about 30 pounds and fit on rotisseries used to cook whole pigs.
Rotisserie size is not the only factor to consider when cooking a whole lamb. Automatic rotisseries turn the meat slowly and constantly, which cooks the meat evenly and prevents arm fatigue. Automatic rotisseries also make it easy to baste the lamb as it turns.
Adjustable-height rotisseries are ideal for cooking lamb. Whole lambs are cooked without a protective layer of skin and fat, making them vulnerable to burning. Raising the rotisserie height solves this problem by moving the lamb away from the heat.