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Paperback. Condición: New. Print on Demand. This book provides a detailed look at the eradication of pullorum disease in Massachusetts. A major focus is to understand the nature of the disease as it pertains to poultry, including birds that are sexually immature. Along with the testing results for the 1931-1932 season, the author delves into the impact of age on the quality of concentrated antigen, the effect of soil and litter contamination on pullorum disease-free birds, and the dissemination of S. pullorum infection among sexually immature females. The author also examines the pathogenicity of S. pullorum in relation to birds other than chickens and provides observations concerning diagnostic tests for pullorum disease. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.