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Energy (Bio-energetics/Energy balance (Catabolism (Breaking down, Tend to…
Energy
Bio-energetics/Energy balance
Catabolism
Breaking down
Tend to converge (to getting ATP)
Anabolism
Build up
Bio-energetics
Energy provision > energy needs = Positive E balance
Store energy
Energy provision < energy needs = Negative E balance (NEB)
Mobilise body E reserves (catabolism)
Energy balance
When total energy provision = Total energy Needs
Energy and metabolic rate
Gross energy
Digestible energy
Metabolisable energy
Net energy
Bomb calorimetry
Calories: 1000 cal = 1kcal
Heat required to raise temp of 1g of water by 1C at STP
1 calorie = 4.2 Joules
Measures gross energy
Dry matter (DM)
Mass without water
Fresh weight (FW)
Mass including water
(Just put food on scales)
Relative gross energy content
Animal energy costs