Yang Zhao hold chicken hatchling (IMAGE) University of Tennessee Institute of Agriculture Caption In his lab, Yang Zhao, assistant professor in the UTIA Department of Animal Science, researchers welfare of broilers in production. Photo courtesy UTIA. Credit UTIA Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.