Lamb hamburger from Dutch Grass Lamb. Lamb meat is a very lean type of meat. It contains little connective tissue and is tender, juicy, and soft. Lamb meat contains many nutrients, such as proteins, iron, zinc, and vitamin B. Lamb meat is low in calories and lean. Meat from lamb contains more iron than, for example, vegetables and grains. Lamb meat possesses a lot of vitamin B, which provides energy, is good for the skin, and stimulates the production of red blood cells. Lamb meat is rich in zinc, which is important for growth, digestion, appetite, and the immune system. Most lamb meat products are suitable for short preparation.