Racing Pigeon Endurance Supplement RAPIDE ForteX4 Aviform Carnispeed (Rohnfried) L Carnitine for Pigeons Racing Pigeon Care The main ingredient of Carni Speed is L carnitine. This substance, which is similar to a vitamin, plays a central role in the metabolism of pigeons. With a dosage of 10 ml litre drinking water Oxy B 400gr vitality 250x250.jpg The main ingredient of Carni Speed is L carnitine. This substance, which is similar to a vitamin, plays a central role in the metabolism of pigeons. With a dosage of 10 ml litre drinking water