32 N. H. Agri. Experiment Station [Bui. 296 



Pullorum Tests 



The largest number of blood samples tested for pullorum for any test- 

 ing season since the work was started in 1918 occurred during the season 

 1935-36, reports C. A. Bottorff. There were 284 poultrymen who tested 

 370,176 blood samples from 336,417 birds. This number is more than 

 30% of the total adult poultry population of the state, and 99.81% of 

 the samples tested did not react to the test. This high percentage of 

 freedom from pullomm is one of the contributing factors of the present 

 high standing of the poultry industry in New Hampshire. 



The 50 per cent increase in the number of tests has, in a large mea- 

 sure, been due to reduction in costs to the poultryman. The Division 

 of Animal Industry of the New Hampshire Department of Agriculture 

 paid for the laboratoiy cost, and the poultrymen the cost of collection 

 of the blood samples. 



There was an increase of 18 in the total number of pullorum clean 

 flocks, and an increase of 31 in the pullorum passed flocks. 



Reactors were found in 38 flocks. 



The fact that pullorum can be eradicated by use of the agglutination 

 test and the maintenance of a clean flock through annual testing is 

 shown by the fact that 8 flocks testing 100% of the birds have passed 

 12 consecutive years without any reactors, 7 for 11 consecutive years, 

 9 for 10 consecutive years, 8 for 9 consecutive years, 6 for 8 consecu- 

 tive years, 14 for 7 consecutive years, 23 for 6 consecutive years, 35 for 

 5 consecutive years, 5 for 4 consecutive 3'ears, 19 for 3 consecutive 

 years, 36 for 2 consecutive years. {Miscellaneous Income) 



Poultry Autopsies 



During the fiscal year 2,143 poultry autopsies were performed in the 

 poultry pathology laboratory by C. L. Martin and C. A. Bottorff. 

 There were 831 adult chickens, 1,245 chicks, 66 turkeys and one duck 

 autopsied for the poultrymen in the state. 



The principal diseases in adults were niptured egg yolk 29.8%, coc- 

 cidiosis 16.4%, indigestion 15.6%, uremia 8.54%, pneumonia 8.42%, 

 tumors 5.9%, round worms 5.8%. 



The principal chick diseases were pneumonia 24.3%, coccidiosis 

 18.0%, ulcerated gizzard 17.0%, pullorum 13.0%, indigestion 9.3%, 

 epidemic tremors 5.7%. {State Fund) 



Fowl Pox Vaccine Distribution 



The total number of doses of Fowl Pox vaccine distributed to New 

 Hampshire poultrymen during the fiscal year was 256,200, an increase 

 of 31,000 doses over the previous year's distribution. 



Shortly after the start of this year the Station decided not to sell 

 any more vaccine outside the state. (Miscellaneous Income) 



Laryngotracheitis Vaccine Distribution 



During the past season 75,400 doses of Laryngotracheitis vaccine 

 were distributed to poultrymen in New Hampshire. This vaccine was 



