L-Lysine

Amino acids are the building blocks for protein. Growing animals (like pigs and poultry) need amino acids to build muscular tissue (body protein). In total 20 amino acids form the building blocks for protein. Nine of these amino acids cannot be synthesized by the animal and have to be supplied via the feed (these are called essential amino acids). The other amino acids can be made by the animal from dietary protein. Besides building blocks for protein, amino acids are also needed for several body functions, like development of organs and optimal functioning of the immune system.