March, 1933] iVoRic. Research in New Hampshire 23 



six months none of the pullets showed any indication of having con- 

 tracted the disease. 



The investigations on the six faniis also indicated that the more 

 economical method of eradicating Piillonnn disease from a badly-in- 

 fected flock is to select a small breeding unit of the best birds, retest 

 this unit until it is free, and then use it the following season to replace 

 the flock. The retesting of an entire flock is considered advisable only 

 in cases where considerable breeding or trapnesting has been done. 

 [Purnell Fund) 



Headway Made Against PuUorum Disease 



Over one-fifth of the poultry population of New Hampshire or 

 202,323 birds were tested for Pullomm disease during the 12 months 

 preceding July 1, 1932, and 99.51 per cent were found to be free from 

 the infection. The testing included seven breeds, of which New Hamp- 

 shire Reds led with 175,230 birds and Barred Plymouth Rocks ranked 

 second with 14,505. 



The total number of flocks tested was 196, of which 169 were tested 

 100 per cent, and 149 rated as "accredited" or ''100-per-cent free." 

 The accredited, which had passed two 100-per-cent tests within a year 

 and one annually afterward, numbered 73 flocks with 94,377 birds. 

 The 100-per-cent free flocks totaled 76 with 60,726 birds. Only 133 

 flocks with 112,977 birds rated as cleai;i last year. 



Total infection discovered this year amounted to only .49 per cent 

 as compared with .94 per cent a year ago. The number of infected 

 flocks decreased from 36 a year ago to 27 this season. This work 

 was in charge of C. A. Bottorff. {Miscellaneous Income) 



R. 0. P. Work Makes Good Showing 



Of the 1252 pullets entered in the New Hampshire Record-of-Per- 

 formance Association, 279 were granted nine-months ceiiificates on 

 the basis of 200 or more eggs per year. 



The association was formed January 1, 1932, with a membership of 

 se"\'en poultrymen interested in trapnesting and pedigree-breeding work. 

 The Experiment Station assists the organization primarily by furnish- 

 ing inspection service and official recognition. 



The breeders keep their own trapnest and pedigree records. The 

 inspector checks them and takes charge of the trapnesting at unan- 

 nounced periods during the year. This provides an official guarantee 

 to the purchaser of chicks and breeding stock that the advertised 

 records are dependable. 



One hundred birds merited advance certificates for averaging 20 

 eggs per month, and 179 others, certificates for 17 eggs per month. The 

 work has been in charge of Frank D. Reed. {Miscellaneous Income) 



Renewed Interest in Certification Possible 



The poultry certification work closed the year ending June 30, 1932, 

 with 22 certified flocks, 5 flocks handled but not certified because not 

 of accredited or 100-per-cent Pullorum-disease-free stock, and 14 addi- 

 tional flocks culled for egg production only. 



