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Massachusetts Agricultural College, 



AMHERST. MASS. 



CONTROL SERIES BULLETIN NO. 31 JULY, 1925 



MASSACHUSETTS AGRICULTURAL EXPERIMENT STATION 



CONTROL OF BACILLARY WHITE 

 DIARRHOEA 



1924-1925 



By P. E. BRANSFIELD 



Four years ago the first report on the work of testing for the elimination 

 of white diarrhoea from the poultry flocks of Massachusetts was published. 

 During that season, 24,718 breeding birds were tested, 12.5 per cent of infec- 

 tion was found. Only 25 flocks, representing 2,414 birds, were found to be free 

 from the disease. The record of the past season shows 66,503 birds tested, 

 2.94 per cent of infection found, and 79 flocks, representing 25,390 birds, found 

 to be free from the disease. These results show marked progress and give 

 grounds for hope of ultimate eradication of the disease. They have been se- 

 cured through the cooperation of Massachusetts poultrymen with the work of 

 the Department of Veterinary' Science and Animal Pathology of the Massachu- 

 setts Agricultural Experiment Station. Full details of the season's work are 

 included in this report. 



Request for bulletins should be addressed to the 



AGRICULTURAL EXPERIMENT STATION 



AMHERST, MASS. 



4500 7-25 Order 2265 



