66 EXPERIMENT STATION BULLETIN 354 



From the above figures one can readily see the value of the testing 

 program to the poultrymen of the state in reducing the losses from Pullo- 

 rum disease. It is true that infection is found each year ; but such a con- 

 dition is inevitable as long as birds and chicks are imported from states 

 which carry a high percentage of infected flocks and as long as untested 

 but infected flocks remain in our own state. Nevertheless, the situation is 

 quite satisfactory and New Hampshire poultrymen enjoy the reputation of 

 having a higher percentage of disease-free birds, as far as Pullorum is con- 

 cerned, than any other state in the country. 



F. E. Allen 



Manufacture and Distribution of Fowl Pox Vaccine 



During the year 1943-44, 184 poultry flock owners purchased 331,650 

 doses of fowl-pox vaccine from the University Poultry Laboratory. 



This material is produced in a building which is used only to harbor 

 the birds used in its preparation. Such birds must be in a healthy condi- 

 tion as assured by appropriate blood and laboratory tests. The birds are 

 purchased from the University Poultry Farm. 



The Univesity holds a Federal license to manufacture this vaccine ; 

 accordingly, it must meet certain rigid standards of purity and potency as 

 set up by the United States Department of Agriculture. Because of these 

 standards of purity and potency New Hampshire poultrymen are getting 

 a product which will produce immunity to fowl pox without introducing 

 other disease-producing organisms. 



F. E. Allen 



Manufacture and Distribution of Fowl Laryngotracheitis Vaccine 



During the period of eight months from July, 1943, through February, 

 1944, a total of 33,900 doses of laryngotracheitis vaccine were manufac- 

 tured and distributed to several poultrymen in Rockingham, ]\Ierrimack, 

 and Strafford counties. Although this service was self-supporting, the 

 manufacture of this vaccine was discontinued on July 1, inasmuch as com- 

 mercial products are now available. 



E. F. Waller 



National Poultry Improvement Plan 



Record of Performance. During the past year there were 14 flocks 

 of chickens on 11 different farms under official supervision. A total of 

 5436 birds were placed under trap, out of which 2166 females qualified for 

 U. S. Record of Performance. The total hen population of these farms 

 was 54,488 birds. These breeders had 2176 females in their U. S. Record 

 of Performance matings. In addition, one turkev breeder had 200 birds 

 under State Record of Performance supervision. 



Certified. Six flocks, involving 16,790 birds, were certified. 



