TENTH ANNUAL REPORT ON 



ERADICATION OF PULLORUM DISEASE 



IN MASSACHUSETTS 



1929-1930 



H. Van Roekel, K. L. Bullis, and G. L. Dunlap' 



During the 1929-30 testing season under the Poultry Disease Elimination 

 Lyaw furtiher progress was made toward eradication of pullorum disease. 

 These encouraging results are the effects of soimd disease eradication meas- 

 ures as adopted by an increasing number of pouJtrymen. 



Credit is due to Dr. \V. R. Hinshaw and Dr. E. F. Sanders (now of the 

 University of California and the University of Missouri, respectively) for 

 leaving the work so well established; and also to the various agencies which 

 cooperated in the eradication program. 



Service Rendered During the Season 



Marked increases are observed in the number of tests and the number of 

 autopsies of doubtful reacting birds. An effort was made to obtain more 

 information on early pullet testing and intensive retesting. Further informa- 

 tion in regard to pullorum disease in fowls otl^er than chickens was obtained. 



Summary of Service Bendeied 



Applications received 475 



Applications cancelled 14 



Flocks tested 46 1 * 



Tests made 386,682 



Routine 377,152 



Experimental 9,530t 



Autopsies of doubtful reactors 228 



Personal conferences from March 1, 1929 to March 1, 1930 125 



* Includes one flock of pheasants. 



t Includes 584 fowls other than chickens. 



Distribution of Tests and Reactors 



Classified According to County and Breed. — Table 1 shows the distribution 

 of total tests and positive tests by counties in each of ten breeds, with other 

 breeds grouped as miscellaneous because of the small numbers tested. Rhode 

 Island Reds, White Leghorns, Barred Plymouth Rocks, and AVhite Plymouth 

 Rocks were the predominating breeds and were represented by tested birds 

 in every county, with the exception of White Leghorns in Barnstable and 

 Franklin Counties and Barred Plymouth Rocks in Berkshire County. The 



^ Respectively Chief of Laboratory and Assistant Veterinary Pathologists. Consider- 

 ation is extended to Dr. J. B. Lentz, Head of the Veterinary Science Department, and 

 Miss Miriam Clarke, technical assistant, for their assistance in the work and in the 

 preparation of the report. 



