TUCKER, Georgia, May 21 (TNSres) -- The U.S. Poultry Foundation issued the following news release: * * * Researchers Develop Vaccines for the Control of Chicken Spotty Liver Disease USPOULTRY and the USPOULTRY Foundation announce the completion of a funded research project by researchers from Iowa State University that worked to develop and evaluate bacterin-based vaccines for the control of spotty liver disease in poultry. The research is part of the Association's comprehensive research prog  more