Therefore the use of antibiotic growth promoters has been banned in many countries and these led to investigations of alternative feed additives in animal production. One of the alternatives is the supplementation of aromatic plants and/ or their extracts due to their positive effects as antimicrobial (ELGAYYAR ET AL., 2001; WENK, 2003), as stimulant on animal digestive systems and as antioxidants (BOTSOGLOU ET AL., 2002)