Show FOWL VACCINE IS ADVOCATED I LI Poultry News I IBy By DR D. D E E. E MADSEN Animal Pathologist Utah Ut Experiment Station Most are now planning their 1935 poultry programs with the single aim to produce profits Purchase Pur chase of ot strong vigorous healthy chicks o of good breeding has many times been stressed d as a major factor toward oward this end But Dut after the chicks have reached a more mature age there is another important decision n must make whether make whether or not it seems desirable de de- de to vaccinate fowls If It pox has I loc occurred on your premises premises- or on closely adjacent premises within the year it is probably wise to vaccinate all additions to the flock lock young orma or ma mature r Experiments show that there is little retardation of growth when birds bird are vaccinated before belore entering production but vaccination while birds are arc in production may cause a definite decrease in production and sometimes loss of ot a considerable num number number ber of birds The best age to 10 vaccinate has been found lound to be when when the the birds are between be be- tween 50 and 90 days old The produced chicken vaccine should be used when birds are arc immunized The pi pigeon con produced vaccine vaccine vac cine is probably the safest product to use on birds which are laying Pigeon vaccine does not produce as lasting an immunity as does the chicken product Vaccination for lor bronchitis is a more recent development but experiments conducted by the New Jersey Jeney experiment experiment ment station indicate vaccination is not harmful and protects the birds for lor several months probably for l life e. e Since bronchitis vaccine contains the live bronchitis virus It should be used with caution and not used on premises where the di disease ease has never existed or where it is unlikely to become established Some workers have r reported unfavorable results from bronchitis vaccination Inoculation take place be before before belore fore lore the birds reach maturity 50 to 90 00 days being the recommended age It is La claimed the pox and bronchitis bron vaccines may be administered at the same time with good results Care should be taken not to vaccinate for lor either disease if it the birds are not in good health Cost of the pox vaccine is approximately one cent per dose and the cost of vaccine is four lour to five cents per dose Care should be I taken to use only a reliable product The state law requires that all live virus vaccines must be administered under the direction o of a licensed vet vet- |