Midterm - Lecture 2 Flashcards
Through what dietary components do animals get energy?
fat, protein, and carbohydrates
How is energy measured?
in joules or calories
What is the definition of a calorie?
the energy required to raise the temperature of 1 g of water from 16.5 to 17.5 degrees C
What is the equivalent of 1 calorie in joules?
4.184 joules
What is 1000 calories equivalent to?
1 kcal
What is 1000 kcal equivalent to?
1 mcal
What is the equivalent of 1 kg in pounds?
2.2 pounds
What is 1 mg/kg equivalent to?
1 ppm
What is the equivalent of 1 lb in grams?
454 grams
What is the equivalent of 1 lb in ounces?
16 ounces
What is the equivalent of 1 oz in grams?
28.33 grams
What is the maintenance energy?
the energy expended to maintain the animal
How is maintenance energy calculated?
K(kgBW^(3/4))
How does direct calorimetry work?
an animal goes into a sealed chamber and all heat produced over a period of time is measured
How does indirect calorimetry work?
calculates heat that living organisms produce based on their consumption of oxygen