Testing Plan No. 1 



On birds one year of ci(je or older, or on layinjj pnJlets. 

 The breeding flock to be considered free from infection when produced 

 according to the following plan: 



(a) Original test considered as being the one when the flock is first found 

 free from reactors. 



(b) Second test on these non-reactors, six to twelve niontlis later, with 

 no reactors found. 



(c) Final test on progeny, again with no reactors found. 

 Three consecutive negative tests required. 



TesHvij Plan No. 2 



Alternate for pnllpf.t, or tchen more rapid clearing of the flock 



i.t desired. 



The breeding flock is to be considered free from infection when produced 

 according to the following plan: 



(a) Original test to clear flock of reactors. 



(b) Non-reactors tested again six weeks later, with no reactors found. 



(c) Off'spring of the above tested as pullets, and no reactors found. 



(d) Retest six weeks later, again with no reactors found. 

 Three consecutive negative tests required. 



This second plan is feasible only in the case of early hatched, early ma- 

 turing flocks. 



Note. 



It should be understood that pullets are not eligible for testing until they 

 are laying. 



Male birds may be used for breeders if tested once and found non-reacting. 



Control Measures 



1. All birds showing a positive agglutination reaction to be removed from 

 the breeding flock. Reacting birds to be disposed of if possible, but if it is 

 necessary to keep them as egg producers, to be kept under strict quarantine. 



2. Male birds not to be housed during the breeding season with other than 

 breeding stock. 



3. New stock brought on the place, whether adults, day-old chicks or hatch- 

 ing eggs, to come from stock shown to ht free from bacillary white diarrhoea 

 as determined by the agglutination test. 



Cooperation from the Poultrymen 



The department has not sufficient funds or personnel to enable it to follow 

 up the results of the tests. The responsibility for applying control measures 

 suggested, therefore, rests on the poultrymen themselves. 



It is important that poultrymen bear in mind the desirability of consecu- 

 tive testing. Infection can be eliminated more rapidly and economically by 

 testing consecutively eacli year than by testin~g one year and not the next. 

 When testing has once been started on a flock it should not i)e discontinued 

 until the flock has been declared free from the disea.se. 



Inquiries have been received from poultrymen asking wiiere they should make 

 application for the test. Application blanks can be obtained only from the 

 Department of Veterinary Science and Animal Pathology. A record is kept 

 of all the poultrymen to whom application cards have been sent. These cards 



