Transcript Animal disease control - AAEC

ANIMAL DISEASE
CONTROL
MR. MCGUIRE
ANIMAL SCIENCE
WHAT IS A HEALTHY ANIMAL?
• A healthy animal is one that is not sick and brings
much benefit as possible to its owner
• Being able to produce at a high rate equals a
healthy animal
• If we have a sick animal there are things we can do
to help that animal
3 THINGS WE ARE CONCERNED WITH A
SICK ANIMAL
• Treatment of the sick animal
• Promoting animal health
• Preventing disease
PREVENTION IS BETTER THAN A CURE
• Why?
• Disease often slows growth and reduces production
even after there is a cure
• Disease may leave permanent damage
• Disease can kill leaving a total loss
• Some disease may spread to humans
START WITH A TREATMENT
• If an animal heard is already healthy, humans tend
to be interested in treatment than prevention
• It is crucial to identify potential threats before
disease has the opportunity to set in
• Clean
• Establish healthy eating habits
• Ensure you record everything
CAUSE OF DISEASE
• You have a calf that begins to breath with difficulty and
cannot stand up…
• The local people say it is because the owner has done
something wrong and the healer must drive the evil spirit
out of the cow
• The livestock advisor says it is because the calf is in a
dark, damp pen and does not have fresh air
• The Vet says its because the animal has a lung infection
• A community development worker says its because
there is no public grazing land and the calf does not get
enough to eat
• So…….. Who’s correct? The important thing to
remember is that there is a variety of reasons that a calf
can get sick
DURATION OF SICKNESS
• Duration: how quickly the animal can be sick and
how long the animal is sick
• Acute Diseases: a disease that begins rapidly and
generally does not last for a long time. Causes a
rapid financial losses through death or abortions
• Anthrax, hoof and mouth
• Chronic Diseases: a disease that lasts a long time.
Usually fails to produce or grow as it should.
Financial loss is slowly over time (i.e. lower milk
production)
• Internal parasites, malnutrition
DISTINGUISHING DISEASES BASED ON
WHAT BODY PART THEY EFFECT
• Example: is an animal has diarrhea, which body
system would it be effecting?
• Most likely the digestive tract which needs to be
observed
• If an animal has a runny nose and breathing
abnormally what would be effected?
• Most likely the respiratory system
• Remember, some diseases attack more then one
system and that an animal may have more than
one disease!
• Example an animal may have diarrhea and may be thin, it
may be malnourished and have an internal parasite
DISEASES BASED ON CAUSE
Acute vs. chronic
Then infectious or non-infectious
If infectious is it contagious or not?
Infectious diseases are caused by living organisms like
bacteria, viruses and parasites
• These organisms can enter the body through the skin or
a body opening and cause damage
• This is an infection
• It is considered contagious if diseases can be directly
spread from animal to animal, if not it is non contagious
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• Mites: Directly from contact
• Tetanus: non- contagious organism found in soil or animal
manure
HOMEWORK
• Use the “Where there is no animal doctor” book
• Look up a disease from any system (i.e. Digestive,
reproductive…) answer in complete sentences
• What is its name?
• What is it caused by?
• What is the treatment if any? Can it be prevented?
• What system does it effect?
• Is it contagious?
• Infectious?
• Acute or Chronic