Glut-Amin with a wide variety of amino acids well-balanced in terms of their concentration amounts, used as a protein source which can be metabolized by the pigeon without expending a great deal of energy. The energy-giving saccharides found in Glut-Amin aid this process, which results in a shorter recovery phase for the pigeons following strength and muscle-sapping competitive flights. Moreover, the vitamin B complex contained in Glut-Amin makes an excellent contribution to improving performance. During the moulting period Glut-Amin, if administered regularly, assists rapid and trouble-free plumage reconstruction. In addition, Glut-Amin aids the liver function, which has a positive effect on the organism following inoculations, medicinal treatments, liver damage and poisonings.