AnSci 260 9/18 Notes Hunger and Thirst II
AnSci 260 9/18 Notes Hunger and Thirst II 73356
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This 2 page One Day of Notes was uploaded by Kristi Leslie on Friday September 19, 2014. The One Day of Notes belongs to 73356 at University of Massachusetts taught by a professor in Fall. Since its upload, it has received 66 views. For similar materials see Farm Animal Care and Welfare in Science at University of Massachusetts.
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Date Created: 09/19/14
AnSci 260 Hunger and Thirst Part 2 918 Exam 1 Review Session Sunday 57 in 221 ISB Types of Restriction Focl qualitative restriction gt when they are allowed ad libitum free access to low quality food reduced calorie intake would do this with replacement animals cheaper if you cant be there all the time to feed quantitative restriction gt restricting amount of high quality food thats offered the time during which food is available or making the access to food more dif cult undernutrition gt severe failure to obtain nutrients andor water results in the utilization of body reserves for some physiological function could be intentional or unintentional if prolonged death will ensue malnutrition gt occurs when an animal is given access to enough food but its inappropriately balanced de cient or excessive in one or more nutrients in relation to energy may be intentional or unintentional WaterThirst intentional gt limited availability promotion of pen cleanliness unintentional gt failure of water supply inappropriate design for species competition poor quality extreme temps inappropriately balanced diet Osmometric thirst tonicity of the interstitial uid increases which draws water out of the cells and causes them to shrink Volumetric thirst stimulated by low blood or blood plasma volume ex evaporation loss of blood both of these types of thirst cause you to want to drink Fluid Balance Intracellular uia uid contained within cells Extracellular uid body uids outside cells ex blood plasma Hypertonic higher concentration of solutes outside draws water out of a cell to balance Hypotonic lower concentration of solutes outside water enters cell to balance Isotonic solute concentration outside concentration outside Welfare Considerations Quantitative Restriction increases foragingrelated behaviors and overall activity behaviors may become stereotypic provide suitable substrates or bulkier foods to decrease incidence Qualitative Restriction increases in duration of overall feeding activity lower incidence of stereotypic behavior compared with quantitative restriction may indicate unsatis ed feeding motivation and frustration MalnutritionUndemutrition some undemourishedmalnourished animals spend more time expressing foraging behaviors gt attempting to self correct expending extra calories unnecessarily Water Restriction results in electrolyte imbalances dehydration frustration stereotypies and hypematraemia Summary quantitative and qualitative restrictions practiced to maintain adequate body weight restricting food may reduce welfare TEST Animals used for thousands of years gt philosophers began discussing whowhat has moral standing gt either all sentient beings or rational autonomous agents gt from those the 5 views came into play gt contrac util relationalism animal rights resp natural gt mostly follow utilitarianistic view here for humans as long as treated with care and respect gt l960 s animal welfare act and ruth harrison wrote animal machines gt brambell committee was created in response to those to find out if What was written in animal machines was really happening gt from the brambell committee came the idea of animal Welfare science mandated field which means govemments were involved in trying to get research conducted on these issues gt researchers started to align themselves with either biological functioning affective states and naturalness gt 5 freedoms became the universal list of accepted ways to treat animals
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