摘要：Fish population from various breeding systems may be affected by other diseases than the infections or the parasitical ones, the so-called unspecific diseases. At the roots of the ….. lie either physical and chemical ambient or nutritional and constitutional agents. The present work shows the evolution of the main chemical parameters in the pound water for breeding cyprinids of the 2nd year ECP of the Brates farm during the year 2004.
关键词：fish; chemical parameters; pathological state; cyprinids
