33 - NUTRITION NUTRITION By Dale M Forsyth Purdue...

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Unformatted text preview: NUTRITION NUTRITION By Dale M Forsyth Purdue University Nutrition deals with providing Nutrition deals with providing the right nutrients in the right the right nutrients in the right amounts in the diet. amounts in the diet. Definition Deals with the nutrients needed, their metabolism, feeds that supply them, and feeding systems to provide them NUTRIENT NUTRIENT DEFINED A chemical or chemical compound that aids in the support of life, and is essential for the normal function, growth and reproduction of the animal. CLASSES of NUTRIENTS CLASSES of NUTRIENTS There are 6 Classes of Nutrients Water Carbohydrates Fats Proteins Vitamins Minerals ANALYSIS ANALYSIS Water Water Carbohydrates Crude Fiber NFE Fats Ether Extract Protein Crude Protein Minerals Ash Vitamins Too small to weigh WATER WATER The most crucial nutrient. What % water loss is fatal to animals? ~12% Unique properties of Water: Unique properties of Water: What happens to most substances as they are cooled? What happens when water freezes? What is the consequence of this? 3 important properties of water 3 important properties of water to animals are: to animals are: High Dielectric Constant High polarity of the molecule Water dissolves many things High Specific Heat Takes a lot of heat to change temperature much Helps maintain proper body temp High Latent Heat of Vaporization Takes a lot of energy to change water from liquid into vapor Result is: lots of heat is removed when sweat evaporates or moisture-laden air is exhaled 3 sources of water to animals 3 sources of water to animals Drinking Water Water in Feed Metabolic Water C 6 H 12 O 6 6CO 2 + 6H 2 O Impt to: Hibernating animals Water conserving animals % Yield as Water % Yield as Water Glucose = 60 % Protein = 42 % Fat = 100 % Functions of Water in Animals Functions of Water in Animals Many many functions, which include: Movement of nutrients and metabolites Constant body temperature Media for chemical reactions Takes part in chemical reactions Special roles Special Roles Synovial fluid lubricant Cerebrospinal fluid cushion Sound transmission in ear Light transmission in eye Approximate WATER Approximate WATER CONSUMPTION CONSUMPTION Species Liters/Day Beef 26-66 Dairy 38-110 Horses 30-45 Swine 11-19 Sheep & Goats 4-15 Chickens .2-.4 Turkeys .4-.6 Factors Affecting H Factors Affecting H 2 2 O Reqmt O Reqmt Species Environmental temperature Protein, salt and dry matter intake Lactation Age Activity Rate & composition of gain Health Effects of Water Restriction Effects of Water Restriction Food Intake and production Hemoconcentration Heart Rate Temperature Respiration Rate DEATH Practical Aspect Practical Aspect Make good, clean water liberally available at all times (EXCEPT certain conditions: Before or After HEAVY exercise) CARBOHYDRATES CARBOHYDRATES...
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33 - NUTRITION NUTRITION By Dale M Forsyth Purdue...

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