Infectious Bronchitis Virus 



The Poultry Laboratory has continued to grow infectious bronchitis 

 virus on embryonating eggs, and after being tested for purity and potency 

 it is sold to poultrymen of the state for inoculation of their susceptible 

 birds. During the year, 56 lots of this virus were supplied to New Hamp- 

 shire poultrymen. 



A. C. CORBETT 



F. E. Allen 

 W. R. Dunlop 



Pullorum Testing 



Testing of poultry for Pullorum disease in the state is done by the 

 Poultry Laboratory. During the year, 992,014 birds were tested by means of 

 the tube agglutination test. 



Of 271 flocks tested, none were found to harbor infection. 



A. C. CORBETT 



F. E. Allen 



New Hampshire Broiler Test 



The New Hampshire Broiler Test is managed by the Department of 

 Poultry Science in cooperation with an advisory committee from the in- 

 dustry. It consisted of 30 pens of 250 chicks each. Three lots of birds are 

 reared each year. Both commercial and experimental entries were entered 

 in the test. Measurements recorded were 8 and 10 week weights, feed con- 

 version, mortality, and dressing grades. The New Hampshire Broiler Test 

 is considered one of the outstanding ones in the country and attracts entries 

 not only from New Hampshire, but all parts of the country. 



W. C. Skoglund 



Dairy Bacteriological Testing 



During the year 648 Babcock milk test bottles and 37 pipettes were 

 calibrated as required by law. In addition numerous samples of milk were 

 tested for butterfat, total solids, and bacteria for dairymen of the state. 



H. C. Moore 



