From a
veterinary health point of view pigeons
represent an extreme therapeutic challenge.
In a closed stock loft or parrot aviary,
where the movement of birds in and out is
very low it is simply a matter of testing
birds, identifying what diseases are present
and treating them. Once this has been done
good care, good nutrition and the provision
of good housing should then prevent any
stressed based disease from flaring. In
racing lofts however, a large proportion of
the residents leave each week and then
return after mixing with birds from many
different lofts usually under conditions
that favor the spread of disease.
Obviously we
cannot give medication to these birds all
the time and so we try to develop a strong
natural immunity in them. It is this natural
immunity that protects the birds from
disease in the longer term. A strong natural
immunity develops through ongoing good care
and the correct use of medication. With this
in mind I find it easiest to divide the year
into six stages. Each stage has its own aim
and the correct way to use medication
differs in each stage. These stages are:
Pre
breeding stage
Aim: To
start the breeding season with healthy stock
birds.
Parasitic
disease and diseases that were a problem in
the loft during the previous breeding season
are best treated now.
Breeding stage
Aim: To
produce healthy robust young ready for
weaning no later than 28 days of age and to
maintain the health and condition of the
stock birds.
With the
exception of canker, disease appearing now
often reflects inadequate preparation for
breeding. Medicating breeding stock birds is
a challenge because many of the drugs used
can have side effects during this period and
accurate dosing is difficult because of the
variable water intake in feeding stock birds
depending on the age of their youngsters.
Post
weaning stage
Aim: To
allow a controlled exposure to disease
organisms so that the youngsters can develop
a strong natural immunity to them. This is
achieved by providing a stress free
environment and by avoiding the use of
medication if possible.
Medication
is best avoided now. Mild disease now can
sometimes act almost as a mini vaccination,
strengthening the growing birds natural
immunity through low grade ongoing disease
exposure. Usually disease is only treated if
it progresses to the stage where it
compromises the bird's growth and
development.
Molting stage
Aim: To have
a good molt resulting in the production of a
lustrous set of feathers and to allow
ongoing development of a strong natural
immunity. This is achieved through the
maintenance of a stress free environment,
drug avoidance, parasite elimination and a
complete diet.
Because
feather growth occurs continuously over
several months, and feather quality is poor
if the birds are not healthy, examining the
bird's feathers is like looking at a diary
outlining the bird's health during the
molting time. Feathers have to last all
year. A poor molt results in poor quality
feathers and compromise of race performance
for the whole season. Many common drugs such
as antibiotics and some wormers affect
feather quality. Best always to check with
an avian vet first before using medication
during this time.
Pre
race stage
Aim: Having
allowed as much time as possible for the
birds to form their natural immunity it is
now a matter of assessing what health
problems are persistent, and then using
drugs, if necessary, to get the birds
completely healthy before the first race.
Interestingly when many birds from good
lofts are checked at this time no disease is
apparent. A clinical examination, crop flush
and fecal smear will identify most of the
common problems. If present, now is a good
time to treat them.
Race
stage
Aim: To
maintain winning form through the entire
season by good management and maintenance of
health.
This is when
it gets interesting. It is also the time
when most fanciers start making serious
mistakes.
During
competition medication is used to maintain
health. It is vital that the birds are
completely free of any health problems to
give of their best. Winning birds are always
not only fit but also healthy. If the
natural immunity they have formed is not
strong enough to keep them healthy during
the inherent stress of racing, then
medication is used to ensure that health is
maintained, so that success can be ongoing
and unnecessary losses avoided.
Each loft
has its own set of parameters all of which
affect disease. Loft parameters include such
things as the genetic base of the birds, the
loft design, the geographical location of
the loft, and the way the birds are managed
generally.
If the set
of parameters governing a particular loft is
unchanged then any health problem that
occurred in previous years will predictably
reappear. This is why successful,
preventative health programs can be
reapplied in particular lofts year after
year.
However,
some health problems are more likely to
occur in a particular type of loft, or in
lofts in particular locations. This explains
why a program that works well in one loft is
inappropriate in another. Good examples of
this include Janssens and wet canker, and
the correlation of cold, damp lofts with
Ecoli. It seems that when raced under
Australian conditions, Janssens take longer
to form a protective natural immunity
against wet canker than many Australian
strains. Fanciers racing these birds
therefore need to ensure very good control
of this problem. Similarly birds living in
cold, damp lofts are more vulnerable to
Ecoli. Birds with these problems can still
win but only provided that the fancier is
aware of them and manages them correctly.
Two options
are open to the fancier. He can have the
health of his birds monitored through
regular testing and treat his birds
appropriately for his situation, or
alternatively he can work through a health
protocol blindly. This difficulty here of
course is that his birds may have
medications for problems that they don't
have, while at the same time be under
treated for serious problems in his loft. He
may in fact be using a health program that
would work best in another loft.
Obviously
testing and the wise use of medication is
the way to go. Basically we don't want to
give unnecessary drugs, but also we don't
want to race poorly or experience losses due
to an overlooked health problem.
Racing studs
represent a great opportunity to study the
effects of loft parameters. In many lofts
fanciers have one or two strains and many of
the birds are related. While in racing studs
often many birds of quite different genetics
are raced. In this situation there is one
loft and one training and feeding regime,
but many different genes and so the effect
that this one parameter, i.e. the birds
genetic make up, has on health can be
studied. The results help to explain the
conflicting advise that a new fancier can
receive from experienced fliers.
If you ask
10 different experienced fanciers a question
about pigeon management you are just as
likely to get ten different answers. It is
not that anyone is being non truthful, but
simply that they are answering purely from
their own experience and because each of
them has a different set of loft parameters,
each of which is likely to be different,
their answer purely reflects what is correct
for them. For example in a loft based on
Janssens the advice may be that the birds
are best raced only every three weeks. If
the fancier doesn't treat this may be due to
the birds having a wet canker flare up after
a race which takes three weeks to resolve,
at which time the birds are competitive
again. Goodgers often form a very strong
natural immunity to wet canker at quite a
young age. So a fancier that races Goodgers
may suggest that, after a steady race, some
birds should be doubled back because the
first race can act as a conditioning race.
And so we have it, different answers to the
one question. Both correct but only for that
loft. The correct advice to a novice should
be to have his birds checked and see what is
best for his loft.
Fanciers
often ask, why did my birds get sick during
racing? Disease can only appear in one of
two situations:
Exposure to
disease causing organisms, in particular new
strains of wet canker and respiratory
infection. Because these strains are not
resident in their own loft, the birds cannot
possibly have developed immunity to them.
For this
reason, disease flare ups can occur in well
managed lofts with resultant loss of form
and variable losses.
Severe
stress leading to flare ups of resident
strains of organisms. Overcrowding and low
hygiene are the obvious ones in poor lofts.
In successful lofts unforeseen stresses,
such as an unexpectedly difficult toss in
cold weather, can occur. If and when disease
occurs medication is used to:
Control
disease while the environment or management
flaw that lead to it occurring is corrected.
The correct approach for a long term
solution is not always obvious. For example,
in birds with low numbers of coccidia on
their fecal smear, the answer may not
necessarily be an anti coccidia drug such as
Baycox, but rather a reduction in the amount
of tossing and a multivitamin supplement.
Control new
diseases that enter the loft with returning
race birds so that health, and with it
fitness and race form can re establish.
It's an
interesting thing. If a fancier has seven
good races in a twenty week program, then
given the variabilities in wind direction
etc, then one would expect his seven good
races to be scattered through the program.
Yet, in fact, this is rarely the case. More
often than not his seven good races are
likely to occur in a run of eight or nine
starts. When his good run finishes it is
explained simply by saying that the birds
have "lost form". Yet invariably, when we
check these birds we find that Ecoli, wet
canker or Chlamydia etc has become involved.
Once a loft's health problems have been
identified, then they can be prevented. Then
given a sensible tossing regime, a well
designed loft, and astute care there is no
reason why consistent form should not be
maintained through an entire season.