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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 • • • • • 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