Abstract
ON MANY Illinois farms, progress in the prevention of pullorum disease in newly hatched chicks has been made by the application of sanitary measures in flock management. The essentials of hygiene, though of proven value in the control of pullorum disease, have not, however, been widely applied to farm flocks which furnish eggs to commercial hatcheries in Illinois. S. Pullorum infection in eggs††Flock tests over a period of years reveal from 0 to 75 percent infection with an average of approximately 18 percent. and the centralization of the hatching industry in recent years have facilitated the spread of the disease in incubators. Chicks hatched from eggs from pullorum tested flocks as well as from untested flocks have been found by the Illinois Experiment Station to be infected with pullorum disease. The assumption follows that the chicks from healthy flocks contracted the disease in the incubator.To assist the hatcheryman in pullorum disease prevention the value of sanitation and testing‡‡Illinois Experiment Station Circular 328 (Bacillary White Diarrhea of Chicks). has been repeatedly emphasized. Recently attention has been given to pullorum .
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