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22 Cards in this Set
- Front
- Back
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EPIC test 127
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bill treatment on day old duckling, IR better than heat sear
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Newton and O’Conner
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study found no economic benefit of pain management
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motivation
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process within the brain controlling which behaviours and physiological changes occur and when
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motivation involves
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goals, actions, behaviour sequences, homeostasis, drive
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motivation highest for
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important behaviours
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measure motivation with
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demand experiments
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motivational strength
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probability of performing a given behaviour and frequency or vigour with which it is performed
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choice tests
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which of several resources satisfies a particular motivation better
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operant tests
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do something to get something
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preference tests
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indicates how badly animals want things when they are available, not how badly they miss them when they are absent, used to quantify motivational strength
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preference text example
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sows given rubber mats in stalls spend more time in stalls
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inferring welfare from preference tests
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must establish how strongly animal prefers/avoids options, is motivated to perform a prevented behaviour
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assessing strength of preferences
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will learn to perform task if highly motivated
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economic analysis
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inelastic (necessities) vs. elastic (luxuries)
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economic models manipulate
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limiting available time, obstructive techniques, operant conditioning, aversion testing
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limiting available time
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will drop luxuries as time decreases (hens feed instead of spend time with litter)
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obstructive techniques
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increase cost, can be limited by physical ability (weighted door)
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operant conditioning
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increase cost
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demand curves
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as cost increases elastic drops off, inelastic maintained
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sow housing
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found all enrichments had low motivation
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measuring aversion
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measure motivational strength to avoid stimulus (ex: electroimmobolization in sheep)
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aversive handling in dairy cows
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decreases milk production, tail twist < hit < shout/electric prod
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