ANBI 360.3 Lecture Notes - Lecture 8: West Highland White Terrier, Luxating Patella, Great Pyrenees
20 Jun 2018
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LECTURE 8
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escape/ Avoidance Approach!
negative reinforcement and positive punishment!•
teaches animal what not to do!◦
stress or fear may evoke an undesired behaviour !◦
not appropriate!•
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positive reinforcement approach!
positive reinforcement and negative punishment!•
teaches animal what to do!◦
considered more humane!◦
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Positive reinforcement!
initial training should involve multiple repetitions with every one rewarded!•
reinforcement can gradually become intermittent to maintain the desired behaviour !•
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Genetic Variation in Dog Breeds!
size!•
head shape!•
ear shape!•
tail set & length!•
coat type !•
build!•
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Size!
golden retriever "normal" size!•
cocker spaniel "miniature" size!•
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giant breeds!
great pyrenees!•
newfoundland!•
the genetics of giantism is not yet understood ( although a set of 6 genes explained "small" •
size)!
hypothyroidism is normal for giant breeds ( slow metabolism)!•
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Miniature breeds!
technology is proportionally small!•
west highland white terrier!•
chihuahua!•
pomeranian!•
proportional size decrease head!•
issues with miniaturization!
hydrocephalus (water on the brain)!•
protruding eyes, prone to problems!•
bite problems!•
cryptorchidism more common ( male testicals do not fully descend)!•
luxating patella ( knee cap easily slips to the side)!•
Document Summary
Positive reinforcement initial training should involve multiple repetitions with every one rewarded reinforcement can gradually become intermittent to maintain the desired behaviour. Genetic variation in dog breeds size head shape ear shape tail set & length coat type build golden retriever normal size cocker spaniel miniature size. dwarf breed dwarfs have shortened limbs but normal torso and head more prone to cervical dislocation. Portuguese water dog bitches were 85% the size of the dog. Head shape more compressed, more problems pug has a extremely compressed head early stressed in the heat whippet has a longer head, long snout bite & respiratory usually abnormal. Brachycephalic gene pushed in face gene on chromosome 1 speci c mutation not found semi- dominant?- because some are more compressed then others. Ear set long oppy ears more prone to infections and mite perky ears are assumed recessive long is dominant cartilage enzyme (msrb3) mutation need a lot of cartilage to hold the ears up perky.
