“…But, in animal buildings, in spite of the application of modern techniques, the desired performance is not always achieved (Geers et al, 1984;Parmar et al, 1992;Soldatos et al, 2005;Daskalov et al, 2006). In poultry houses, birds suffer during the fattening period under too low or too high temperatures, excessive humidity or in high concentrations of noxious gases (CO 2 and NH 3 ) and dust.…”