In the following summary is given the incidence of "breaks" among Massachii 

 setts tested flocks during the past eleven years. 



It is hoped that the incidence of "breaks" can be kept at a very low level if not 

 completely reduced to zero. All flock owners (including those not in the testing 

 program) and hatcherymen should exercise every possible precaution against 

 the spread and introduction of infection. 



The following measures have been found to be effective for establishing and 

 maintaining a pullorum-free flock. 



1. All the birds on the premises should be tested each year. 



2. If infection is present, the entire flock should be retested within four to six 

 weeks until a negative report is obtained, provided the value of the birds justi- 

 fies the expenditure. 



3. Every reactor, regardless of its value, should be removed from the premises 

 and sold for slaughter immediately upon receipt of the report. 



4. Offal frcm all birds dressed for market or home consumption as well as 

 dead birds that are not fit for consumption should be burned. 



5. The poultry houses, runs, and equipment should be thoroughly cleaned 

 and disinfected immediately after removal of reactors. Provide an empty pen 

 to each house to facilitate cleaning and disinfection during the winter months. 

 Use disinfectants approved by the United States Department of Agriculture. 



6. Birds removed from the premises to egg-laying contests, exhibitions, etc., 

 should be held in quarantine and determined free of disease before they are re- 

 admitted into the flock. 



7. Purchase of stock in the form of adults, chicks, and eggs should be from 

 known pullcrum disease-free flocks. Consult the Massachusetts Department of 

 Agriculture, 41 Tremont Street, Boston, regarding additions or replacements in 

 your flock. 



8. Eggs should not be saved for hatching until after a flock has been tested 

 and all the infected birds removed. Early pullet testing will permit early hatch- 

 ing. 



9. Fresh and infertile eggs from unknown or infected sources should not be 

 fed to chickens or exposed to birds cr animals such as crows, sparrows, and skunks 

 that may carry or spread the infection. 



10. Pcultrymen should not custom-hatch for untested or infected flocks (in- 

 cluding fowl other than chickens). 



