Energetics Flashcards
Fat metabolisable energy (ME)
37.1 kJ/g
Starch ME
17.3 kJ/g
Glucose ME
15.4 kJ/g
Protein ME
15.9 kJ/g
Alcohol ME
29.8 kJ/g
How is RER and RQ calculated?
VCO2/VO2
How many kJ in 1 kcal
4.2kJ
How many kcal in 1kJ?
0.24
1 watt is __ J/s
1
1kW is ___ kJ/s
1
Total cost of lactation (4)
Milk energy content - 2.8 x milk produced per day
Total energy content - milk energy content x days of lactation
Additional lactation cost - 0.25 x lactation days
Total lactation cost - additional lactation cost + milk energy content
Working out amount of energy from each nutrient from total energy of diet
Nutrient percentage x total energy from diet
Amount of grams from each nutrient
Energy from nutrient / ME
Energy loss from protein (4)
Workout net nitrogen loss
Total nitrogen loss - net loss x days
Total protein loss - total nitrogen loss x 6.25
Total protein loss x 17.7
Loss of lean body mass
5 x total protein loss (g)
Metabolic rate
Weight^0.75
KJ/min of oxygen
Litres of oxygen per min x 20.18
Watts
KJ/min x 1000/60
Work out energy expenditure using PAR
Hours x PAR x BMR per hour
Work out loss of fat mass (6)
Total energy requirement: energy requirement per day x days
Total energy intake: energy intake per day x days
Energy deficit : energy requirement - energy intake
Energy loss from fat: energy deficit - protein energy loss
Grams of fat: energy loss from fat/39.1
Kg of fat: grams of fat/1000
Starch gross energy
17.5
Glucose gross energy
15.6
Fat gross energy
39.1
Protein gross energy
22.9
Alcohol gross energy
29.8
What is the ME unit?
KJ/g
Calculate energy content of a nutrient from its gram quantity
Grams of nutrient x ME
