J.Y. Li, H.G. Bao, Effects of Hypoxia on Activities of GPx, GSR and GST in Tibet Chicken and Silky Chicken Hearts, Journal of Animal and Veterinary Advances, Volume 10,Issue 12, 2011, Pages 1533-1535, ISSN 1680-5593, javaa.2011.1533.1535, (https://makhillpublications.co/view-article.php?doi=javaa.2011.1533.1535) Abstract: This study was performed to investigate whether differences exist in activities of Glutathione Peroxidase (GPx), Glutathione Reductase (GSR) and Glutathione S-transferase (GST) in hearts between Tibet chicken and a lowland chicken breed (Silky chicken). At the end of 5 days of age, 24 chicklings of each breed were divided into 3 groups treated with three different oxygen concentrations, respectively for 20 h. Activities of the three enzymes in chicken hearts were determined spectrophotometrically. Keywords: glutathione S-transferase;Tibet chicken;silky chicken;glutathione peroxidase;glutathione reductase;hypoxia