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14 Cards in this Set
- Front
- Back
Food Energy Flow Chart
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Metabolism
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Biochemical process of converting nutrients to energy and compounds used by the animal;
O2 + CH2O = energy and H2O (metabolic water) |
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energy interconversions example
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Partitioning Energy
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Evaluation of Energy in Foods
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Gross, Fecal, and Urinary Energy
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Determining Heat from a Compound
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Why "Heat Increment"
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Basal Metabolism/Fasting Heat Production
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Heat produced from: Catabolism of body tissues, maintain body temperature, minimum body functions necessary for life.
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Resting Metabolic Rate (RMR) - Animals
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Conditions for Measurement
-Fasted: monogastric - overnight fast ruminants - > 3 days -Rested: minimum movement for animals -thermal neutral zone -methane production minimal |
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Basal Metabolic Rate (BMR)
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Unit of Reference for Basal Metabolism: Metabolic Body Weight
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-heat loss not related to body weight, but to SA
-metabolic body weight (MBW)=BW kg^0.75 -maintenance (basal metabolism) energy calculated as: Homeotherms: man, pigs, poultry, dogs, cats Poikilotherms: marine-aquatic, worms, crustacea |
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Dairy Cow Energy Balances
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Measuring ME: Direct/Indirect Calorimetry
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1. Direct Calorimetry - direct measurement of head
2. indirect Calorimetry - based on biochemical principles and known combustion values. |