ERADICATION OF PULLORUM DISEASE 1931-32 



Table 14 — Serological and Necropsy Data Concerning Twenty-Three 

 Artificially Exposed Chicks (Part IV) 



* Not considered a reactor at any time. 

 ** Titer not suiEcient to be considered a reactor. 



Sexual maturity was attained by 5 birds which were killed 2 months after- 

 ward, and S. pullorum was isolated from 2. The agglutination titers of the 3 

 birds from which 5. pullorum was not isolated gradually became lower, and the 

 birds were not regarded as reactors at the time of necropsy. Birds 21, 35, and 49 

 did not attain sexual maturity, and S. pullorum was isolated from each. 



Table 15 — Serological and Necropsy Data Concerning Eight Pullets 

 Exposed to Artificial Infection as Chicks (Part IV) 



Pullet Age when 



No. Detected Maximum 

 as Reactor Titer 



Agglutination Reaction 



At Maturity At Necropsy 



5. 

 pullorum 

 Isolated 



160 

 20 

 40 



Weeks 



640 37 



2,560 45 



40 37 



160 40* 



1,280 37 



20 36 



20 36 



2.5 



45 



