expect immediate testing service. It should be recognized that the testing load has 

 to be distributed over several months instead of two or three months, because it is 

 practically impossible to employ personnel for only a few months. Also, all breeding 

 flocks should be tested as soon as the birds are five months of age. if the laboratory 

 is in a position to do so. 



Expansion in Efforts Toward Pulloruni Disease Eradication: The 



testing results that have been accumulated over the years definitely reveal that pul- 

 lorum disease can be eradicated from our breeding flocks. However, to prevent 

 possible reinfection of the pullorum-clean flocks, all known foci of infection, re- 

 gardless of the flock, should be eliminated through appropriate and eff"ective meas- 

 ures. The general plan of the program will be built around the following recom- 

 mendations, which have been approved by the Massachusetts Federation of Poultry 

 Associations. 



I. Handling of flocks with acute outbreaks: 



A. Affected chicks should be destroyed or reared for broilers. If early 

 liquidation is not possible, then infection should be eliminated through 

 short interval retesting. 



B. In adult flocks special precautionary measures should be instituted 

 to prevent the disease from spreading within the flock or to other flocks. 



1. Flocks in the acute stage of the disease should not be sold. 



2. Affected pens should be isolated if possible. 



3. Medication should be given under the supervision of competent 

 persons. 



4. After the disease has subsided the flock should either be sold or 

 tested at short intervals. 



C. The use of drugs in an acute outbreak should be exercised only upon 

 recommendation by competent persons. 



II. Handling of infected tested breeding flocks: 



A. Flock owners desiring official recognition are compelled to eradicate 

 the disease from their flocks. 



B. Infected breeding flocks whose owners do not wish to receive oSlcial 

 recognition should be subjected to a planned eradication program. 



III. Specific sanitary and control measures: 



A. Upon identification of infection, eff"ective plans should be applied re- 

 garding movement and sale of stock. 



1. Infected semimature and mature flocks when sold should be 

 slaughtered. 



2. Reactors should be removed and sold for slaughter as soon as 

 j possible. 



3. Immediately upon detection of infection in breeder and commer- 

 cial hatcheries, eff"ective plans should be instituted to prevent the further 

 spread of the disease. 



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