Reduction of Infection in flocks 



Of the 201 poultry plants tested for bacillary white diarrhoea infection 

 during the present season, 98 were tested for th.e first time. Of the remain- 

 ing 103 flocks having had some previous testing, 67 plants have a record of 

 consecutive testing extending back two or more years. The followmg table 

 gives tlie data from these flocks, which are grouped according to the number 

 of years they have been tested. 



Table III. Average Percentage Reduction of Infection in Flocks 

 Tested Consecutively for Two or More Years. 



The Percentages of Birds in the Leading Breeds. 



The following table shows the relative percentage of birds of different 

 breeds submitted to test. The increase in the relative as well as absolute 

 number of Rhode Island Reds is of interest, as possibly portraying a tend- 

 ency among the poultrymen of the State. 



Table IV. Number of Birds Tested Each Year, with the Percentages 

 Belonging to Each Breed. 



Difficulties Encountered in the Work. 



One thing which has caused the department quite a little trouble during 

 the past year is the fact that a number of poultrymen do not put on the 

 bands furnished by the College at the time their birds are bled for the test. 

 They prefer to use their own bands which, in most cases, are already on the 

 birds. This causes a great delay in the handling of the samples after they 



