102 Animal Nutrition Blackboard

102 Animal Nutrition Blackboard - Anorexia nervosa Bulimia...

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Biology 102 Animal Biology - Nutrition Chapter 41
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I. How animals obtain their nutrients! Heterotrophism-must ingest food Suspension/filter-feeding Substrate feeder Fluid feeders Absorbers (Endoparasites) Bulk feeder
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II. What animals eat! Diet strategies 1. Herbivores 1. Carnivores 1. Omnivores
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II. What animals eat - the foods A. Macronutrients “Essential” nutrients Amino & Fatty acids Linoleic acid - 18:2(Δ9,12) Linolenic acid - 18:3(Δ 9,12,15) A. Micronutrients
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III. “Mal”nutrition 1. Vitamin deficiencies Vitamin A – Nyctalopia (night blindness) Vitamin C deficiency – Scurvy -important to create collogen Vitamin D deficiency – Rickets “Malnutrition” in developing countries Kwashiorkor & Marasmus
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Malnutrition in developed society: Us! #1: Obesity A definition: Body Mass Index (BMI) 30 or higher. Your BMI = weight in kgs ÷ (height in meters) 2
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Malnutrition in developed society: Us!
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Unformatted text preview: Anorexia nervosa Bulimia IV. How animals process food. 4 Stages 1. Ingestion: From mouth to stomach Dentition Saliva-salivary amylase starts digestion Esophagus-doesnt do any digestion Tube lined with smooth muscle that passes food Peristalsis 2.Digestion Mechanical Muscle action Chemical Stomach HCL secretion Pepsin activation Figure 41.17 More Digestion Small Intestine duodenum Pancreas Gall bladder 3. Absorption: Small intestine Figure 41.17 4. Elimination: Large Intestine (Colon) Water Absorption Vitamins (K, B5, Biotin) & Microbial flora Colon cancer A few words on the comparative anatomy of digestive systems Ruminant digestion (Figure 41.28) e.g. deer, camel, hippos, sheep, cattle 300L The digestive tracts of a carnivore (coyote) and a herbivore (koala) compared Fig 41.27 END...
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102 Animal Nutrition Blackboard - Anorexia nervosa Bulimia...

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