Lecture 1

Front 1

Water's Functions

Back 1

1) transports nutrients and aids in excretion

2) medium that allows chemical reactions

3) body temperature regulation

4) lubricates joints and organs in body cavity

Front 2

Animal age and body water _____ with animal age and has an _____ relationship with body fat

Back 2

Decreases over time; its inverse (there's more)

Front 3

muscle tissue contains...

Back 3

more water than fat

Front 4

Carbohydrates

Back 4

serve as a source of energy and provide bulk to keep digestive tract working smoothly

Front 5

Lipids (Fats)

Back 5

1) most dense nutrient

2) insoluble in water, soluble in organic solvent

3) yields about 9.45 kcal/gram gross energy

Front 6

Proteins

Back 6

1) principle constituent of organs and soft structures of animal body

2) made of 22 amino acids

Front 7

Essential amino acids

Back 7

animal body cannot synthesize these 10 things fast enough to its requirements

Front 8

Minerals

Back 8

1. inorganic, solid, crystalline chemical elements
2. comprise 3-5% of animal body dry wt.

Front 9

Macrominerals

Back 9

essential elements required in relatively large amounts (Ca, P, Na, Cl, Mg, K)

Front 10

Microminerals

Back 10

trace elements required in much smaller amounts (Co, Cu, F, I, Fe, Mn, Mo, Se, Zn)

Front 11

Near Infrared Reflection (NIR)

Back 11

Instruments that can detect reflection of ____ light which is used to determine nutrient composition

(wet chem is used to calibrate)

Front 12

Kjeldahl Method

Back 12

sample is digested in sulfuric acid to calculate protein concentration

(Pros: good precision

Cons: time consuming & hazderous)

Front 13

Dumas Method

Back 13

Sample is combusted in chamber and releases CO2 & H2O