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Since SEPTEMBER 11, 2001, I have awakened each morning hoping
that it was all a bad nightmare and that our world was still the
same. We are just now realizing that our lives will never be the
same. It is so important that all of us gather close to our families
and dear friends like we do every day at Parrots Naturally in
order to ponder upon all that we should be thankful for, including
our feathered creatures who bring so much joy to our lives and
for those who share our dedication to them.
We have heard all kinds of attempts to define the
unique relationship that parrots and humans enjoy. What is this
unexplainable attraction that parrots have for people and that
we have for them ? Can we truly own these exotic creature? Do
our Parrots really own us?
No one has satisfactorily explained the relationship
or the mysterious means of communication. No, we cant own
them, but they certainly can own us. So, how do we define our
role? I believe that we are all conservators and caretakers of
all parrots left on the planet. We have a calling. We have inexplicably
been drawn to parrots and they to us
. We must be conservators and caretakers of birds
in health and ombudsmen to the sick bird. Just as we need a spokesman,
an ombudsmen when we are ill , not able to speak for ourselves
or oversee our treatment, our birds need a spokesperson armed
with appropriate knowledge to speak for him or her. Become
Proactive.
What are our responsibilities?
In general it is imperative that we all learn as
much as we can about our birds by gaining a thorough knowledge
of the tests and procedures used to assess health status. That
is why we are preparing this series of articles and why we are
offering classes at Parrots Naturally in the Fall of 2002 where
we will explore more thoroughly all areas of laboratory testing
.Specifically, here is where we begin:
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Our first priority is to find an Avian Vet with whom to work
cooperatively not confrontationally, a Vet who is not threatened
by your questions and who will take time to explain why certain
procedures are needed and what they mean.
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Dont be afraid to interview vets to ascertain their
openness to your questions and input. Talk to more than one
Vet , I often travel great distances for my birds to see a
Vet who has a particular specialty or who has more expertise
in a particular situation and will take the time to talk to
me.
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While we do not advocate self-testing or undirected treatment,
there are some tests that can be done without a vet. These
include obtaining samples for culturing and referring them
to a laboratory , sending samples to an independent lab for
viral antibody and antigen testing, DNA sexing and referral
of a bird for necropsy. We will talk about these further.
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Our challenge is to educate ourselves on Avian Diseases,
their causes, diagnoses and cures and to do everything in
our power to support people like Dr. Ritchie who is in the
forefront of Avian research. If we do not work diligently
to fund these people, we are facing the threat of unknown
and little understood diseases that will devastate the lives
of all of our parrots and will cause the extinction of many
more species of psittacines
To further our knowledge of avian testing, it is
important that we start with learning some basic terminology.
You may wish to review the definition of terms now.
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Definition
of Terms
The following terms will be used
in exploring the issues of avian laboratory testing.
Antibody: a specific protein or immunolobulin
produced in response to an antigenic challenge. The serum globulins
(a protein) can bind to and neutralize bacterial toxins or band
to the surface of bacteria, viruses or parasites.
Antigen: a foreign substance that can stimulate
the production of antibodies.
Bacteria: Single celled member of the plant
family found in all environments and all living multicellular
organisms, some of which may cause disease. Bactericidal: term
used to describe a drug or chemical agent that kills microorganisms
Bacteriostatic: term used to describe a drug or chemical agent
that inhibits the growth of an organism without killing it.
Bursa of Fabricius: a lymphoepithelial organ
found at the junction of the hind gut and cloaca in birds which
is the site of B cell maturation. The site is the equivalent of
bone marrow in humans which produce B cells to bind with and neutralize
antigens (microorganisms)
Chlamydia: a single celled organism that
has been classified as a virus though formerly classified as a
bacteria. Chlamydia psittacine causes pneumonia and systemic disease
in humans. In birds it is called Psittacosis or Ornithosis.
Closed
Aviary: Avian
environment closely controlled and maintained to ensure minimal
transmission of disease. Ideally birds do not come into or exit
and reenter the facility without extensive testing for all known
pathogens and lengthy isolation procedures are followed. Visitors
are not allowed and personnel undergo rigorous decontamination
before entering the facility. For further information on how the
modified closed aviary concept applies to all of us click on link
above.
Enteric Pathogen: Usually refers to gram
negative bacteria found in the intestines of humans.
False Positive test results: refers to the
detection of a substance or condition that is not there. False
Negative test results: refers to a result that does not detect
a substance or condition that is actually present.
Fungus: a multicellular member of the plant
kingdom which lack roots and stems and are referred to scientifically
as Thallophytes. There are over 50,000 species; of these
50 to 75 are considered pathogens. Fungi are not usually considered
communicable in the usual sense of person to person or animal
to animal transmission, Humans and animals become an accidental
host by inhalation of spores or through an open wound. The increase
that we are seeing in avian and human infections is in part attributed
to suppression of the immune system.
Overuse or long term use of antibiotics is another
factor contributing to the increased incidence of fungal infections.
Candida and Aspergillus sp. are the most commonly encountered
fungi in Avian medicine. Aspergillosis because of the rapidity
of onset and difficulty in treating has become one of the most
frightening diseases of our Parrots.
Nosocomial
infection:
Term used to describe infections acquired in a hospital or medical
setting. In other words the patient did not have this infection
when admitted or was seen, but acquired it in the course of being
treated. This is a very frightening phenomenon since many nosocomial
microorganisms are highly drug resistant. This term may also be
used to define infections transmitted in the veterinary clinic.
Non-pathogen: A microorganism usually isolated
from a human or animal source that is considered part of the normal
flora and is not capable of causing disease.
Pathogen: A disease causing microorganism or agent.
Sensitivity of a test: The sensitivity of
a test reflects the level of concentration of a substance that
must be present in order for the methodology to detect it. A highly
sensitive method will detect very small amounts of a substance
whereas a less sensitive method will require the substance to
be present in greater concentrations for detection.
Specificity of a test: Specificity refers
to how well the method performs in detecting only the desired
substance.
Virus: a subcellular particle lacking DNA
and which cannot reproduce without invading a host and using the
host DNA.
Virulence: The degree of pathogenicity or
ability to cause disease of an organism.
Zoonotic infection or Zoonoses: Infection
caused by organisms that are capable of crossing species barriers.
Recent examples are West Nile virus, the 1997 Hong Kong influenza
virus that was transmitted from chickens to humans, and several
species of Chlamydia.
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