The National Poultry Improvement Plan. 



The official State Agency for the National Poultry Improvement Plan 

 (NPIP) in this state is the New Hampshire Poultry Improvement Board, Inc. 

 The board consists of ten members elected from and by the poultrymen par- 

 ticipating in the various phases of the plan. 



The NPIP office administers the breed stages of the plan and is the 

 office of the contact representative for the state who serves as liaison between 

 the state and the U.S.D.A. and heads up the whole program in the state. 



Participation in the breed stages (Approved and Certified) involved 

 419 flocks with 1,*337,649 birds. This is 75 percent of the total participation 

 which includes flocks that are in pullorum classes only. 



The R.O.P. program has 8 flocks with about seven thousand birds under 

 official trapnesting. 



The Meat Production program has four flocks participating. Again this 

 year the chicks for the Meat program are being raised at the University poul- 

 try plant and with eight more entries make up the second New Hampshire 

 Broiler Test. The test will run from June 30th to September 8th. 



E. T. Bardwell 



Diagnostic Services Performed at the Poultry Laboratory. 



From July 1, 1951, to June 30, 1952, a total of 5,144 specimens of all 

 kinds were submitted to the Poultry Laboratory for diagnosis. These repre- 

 sented 2,015 cases. 



A total of 4,532 chicken specimens were examined, 140 turkeys, and 8 

 miscellaneous birds. Eighty cases consisting of 112 specimens from various 

 animals were also handled by the Laboratory personnel. There were 352 cases 

 of blood samples submitted for the immunity tests. 



A. C. CORBETT, D.V.M., W. R. DlJNLOP, D.V.M. 



Pullorum Testing. 



Testing of the. poultry for pullorum disease in the state of New Hamp- 

 shire is done by the Poultry Laboratory at the University. During the last 

 fiscal year 1,783,114 birds were tested by means of the tube agglutination 

 test. In addition 56,196 retests were made, thus giving a total of 1,839,310 

 samples tested for the year. 



Of 584 flocks tested 5 were found to harbor infection. Thus 0.85 percent 

 of the flocks under test were infected. 



F. E. Allen, d.v.m., A. C. Corbett, d.v.m., W. R. Dunlop, d.v.m. 



Infectious Bronchitis Virus. 



The Poultry Laboratory grows Infectious Bronchitis virus on embryo- 

 nating eggs, and after being tested for purity and potency it is sold to poultry- 

 men of the state for inoculation of their susceptible birds The birds upon re- 

 covery from the disease have a fairly solid immunity. During the last fiscal 

 year 967 lots of this virus were supplied to New Hampshire poultrymen. 

 F. E. Allen, d.v.m., A. C. Corbett, d.v.m., W. R. Dunlop, d.v.m. 



Differential Diagnosis of Newcastle Disease. 



A preliminary study was made on breeders which had been vaccinated 

 by the wing web method for Newcastle Disease at fourteen weeks. The birds 



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