Abstract:In order to explore the method and the regulation the energy metabolism of poultry and other small animals concerned, we successfully designed and built two sets of closed—circuit respiration apparatus in June 1987, suitable for poultry, rabbits and other small animals. The main parts of the apparatus are described as follov: The respiration camber, air-condition system, carbon dioxide absorption system, oxygen supplying system, switch cabIe, and the equipments of the feedstuff supplying and water drinking. These apparatus have the functions of automatically controlling the internal temperature, humidity and air-pressure of the chamber for the experimental requirements. Having been tested again and again with several methods, these apparatus are now in normal condition and have been applied for experimental operation.