26 N. H. Agr. Experiment Station [Bulletin 289 



Fowl Pox Vaccine 



There were 225,200 doses of fowl-pox vaccine distributed to New 

 Hampshire poultry men during the year and 29,300 doses outside the state. 



Studies in the Improvement of Technique for the 

 Eradication of Pullorum 



A study of the whole-blood test for Pullorum disease was started to 

 determine if it is satisfactory to use as an official test for flocks in New 

 Hampshire. The work was conducted on two farms during the past year. 

 In studying results of the birds necropsied five birds were found that did 

 not react to the whole blood test but did react to the standard tube test. 

 Salmonella pullorum was isolated from these birds. One bird failed to react 

 on standard tube test but did on the whole-blood test and salmonella pull- 

 orum was isolated. 



One bird gave a positive reaction to the whole-blood test but failed to 

 react on the standard-tube test and salmonella pullorum was not isolated. 



The results of the comparative tests, thus far, do not justify using the 

 whole-blood test as the official test in New Hampshire, even though esti- 

 mates indicate that it may cost 1 to 1.5 cents less than the standard tube test 

 (C. A. Bottorff—Purnell Fund.) 



Record of Performance 



Record of Performance work, i.e., official supervision of trapnesting and 

 breeding, was conducted on twelve poultry breeding farms — an increase of 

 three farms over the previous year. The supervisor, a representative of the 

 Experiment Station, makes eight annual visits to each farm, giving it official 

 recognition of records and aids the poultryman in his problems. The num- 

 ber of Record of Performance Certificates which are issued for birds pro- 

 ducing 200 or more 24-oz. eggs increased to 370, and the number of ad- 

 vanced certificates which are given for birds laying 240 or more standard 

 sized eggs, more than doubled, amounting to 221. The total number of birds 

 entered was 2,578. {R. C. Ditrgin — Miscellaneous Income.) 



Poultry Approval 



Poultry Approval, formerly called Poultry Certification, entailed the 

 handlmg of 14 flocks of 14,893 birds by a member of the Experiment Sta- 

 tion Staff, and grading the birds into three classes : breeders, layers and 

 culls. The superior individuals as to type, color and producing qualities, 

 are placed in the breeder class. The birds inferior in type and color or having 

 a standard defect but being good producers, are placed in the laying class. 

 The cost of this work to the poultrymen has been reduced for 'each bird 

 handled, but entails all expenses incurred, such as travel, lodging and cost 

 of bands. This reduction of expenses, together with the Government stimu- 

 lation along this line, should greatly increase the Poultry Approval work in 

 the near future. {R. C. Durgin — Miscellaneous Income.) 



Poultry Autopsies 



There were 1,798 poultry autopsies performed at the poultry pathologv 

 laboratory this past fiscal year. Of these 795 were adults, 962 chickens, 29 

 turkeys, 6 pheasants, and 4 ducks. 



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