1. Healthy chicks at one month of age may be given a
preliminary dose of this vaccine. The vaccination should be
repeated from time to time particularly just before the
change of weather or season.
2. Strain (PD113) is marketed in liquid. This vaccine is
administered either by prick or stab into the wing; by
dropping into one of the nostrils after closing
temporarily the other with a finger; into one of the
eyes; or by injecting directly in the breast, wing or leg.
3. We are advocating that chicks less than three months
old should not be vaccinated unless otherwise
necessary. Young baby chicks which are still in the
brooder have remote possibilities of getting infected
with Newcastle disease since the infection can enter in
only by means of contaminated feed and water or
introduced by careless caretakers or owners.
Inoculation of avian pest vaccine may hinder the baby
chicks normal growth, unless if necessary or highly
needed.
5. Any kind of vaccination performed among laying hens
will invariably reduce the egg production beginning
the third or fourth day after inoculation which may
last for as long as a week or even more, depending
upon the condition of the flock. Whenever
possible, when the birds are already roosting and they
can be picked up one by one to avoid over crowding. In
daytime vaccination has to be done, it should be done
late in the afternoon when nearly all the layers have
already laid eggs to avoid accidents.
6. One method of vaccination is as good as the other if
done well.
A.) If the stab or prick method is to be used, the wing-
web is the best site of inoculation.
B.)In the drop method, an eye dropper may be utilized
after this has been sterilized. One drop of vaccine is
put either in the nose, eye or cloaca.
C.) all the birds in an infected flock, including the sick
ones, should be given the vaccination by means of
injection which is more effective than either the stab
or drop method.
7. DURATION OF IMMUNITY.
* Avian pest vaccine confers temporary immunity to
vaccinated birds which may last for six months to a
year or more. The immunity disappears within the
three months if chicks are inoculated very young.
8. Fowl cholera vaccination may be administered to
chicks as early as three months of age if the flock is
infected or threatened with disease. Otherwise, only
older birds and full grown stock should be immunized.
Young baby chicks in the brooder are seldom attacked
by the disease except when contaminated water or feed
is given.
9. The usual dose of this vaccine for adult birds 1
c.c, administered either intramuscularly or
subcutaneously, to be reduced accordingly among
younger stock as 0.3 to 0.5 when 2 or 3 months old and
¾ or .75 c.c. when the chickens are 4 to 5 months of
age.
If the vaccine is to be given subcutaneously, the breast
or the inner lower portion of the wings is good
location. But if the intramuscular method is to be
used, the fleshly portion of one of the thighs or the
breast can receive the inoculation.
10. The immunity conferred by this vaccine is temporarily
in nature and may last three to six months and even a
year in some cases.
11. Every individual bird in the flock threatened by fowl
cholera should be vaccinated. Otherwise, healthy
pullets can be given the vaccination at about five
month old as a prophylaxis. The adult birds can be
given the immunization at least once or twice a year.
