Nutrients

To calculate crude protein from nitrogen (N), one should

multiply N by 6.25

If an animal consumed 5kg of protein and produced feces containing 2kg of protein, the apparent digestibility of protein would be

60%

Nitrogen-free extract is calculated as dry matter minus all of the following except

ADF

____ is considered a concentrate

soybean meal

Which of the following is NOT involved in rumination?

Absorption

A ruminant animal converts carbohydrates to which of the following in the rumen?

acetate

The digestive tract of a ____ is most similar to humans.

pig

The omasum is not a component of the ruminant stomach

False

If an animal consumed 8kg of protein and produced feces containing 2kg of protein, the apparent digestibility of protein would be:

75%

A ruminant animal converts carbohydrates to which of the following in the rumen?

propionate, acetate, butyrate

A beef cow consumes 30lbs of grass hay (as-fed basis) daily. The grass hay is 80% dry matter. How much dry matter from the hay is she consuming?

24

Rumen bacteria produce ____ that the animal uses for energy.

volatile fatty acids (VFA)

The diet of a beef steer contains 15% modified distillers grain (DM basis). The distillers grains is 50% dry matter. How much modified distillers grains (as-fed basis) should be included to formulate 20lbs of dry matter?

6

A ruminant animal converts carbohydrates to which of the following in the rumen? (2)

propionate

Ruminants are able to use roughage or forage as an energy source because ____.

they possess rumen microbes that digest fiber

____ occurs in the stomach of mono gastric animals.

Both storage and physical breakdown

The ____ of the ruminant is the “true stomach” where gastric and enzymatic digestion occurs.

abomasum

The ____ is distinguishable because it has many piles in its lining.

omasum

Net energy is equal to:

metabolizable energy minus energy lost as heat

The neutral detergent fiber (NDF) method measures all of the following except ____.

pectin

Animals do not have a specific requirement for protein.

True

The acid detergent fiber (ADF) method measures all the following except ____.

hemicellulose

The primary site of fermentation in an adult ruminant is the:

rumen

The largest portion of the newborn calf’s stomach is the:

abomasum

Unsaturated fats are ____ at room temperature.

liquid

The advantage of ruminants over non-ruminants is their ability to use:

roughage or forages

____ is an example of a carbohydrate.

Glucose

Which of the following is considered a micronutrient?

minerals

Which of the following nutrients contains nitrogen?

protein

Fermentation of roughages occur in the ____ of horses.

cecum

If a feed sample weighs 100g before drying and 30g after drying, the dry matter percentage is:

30

Protein contains ____ energy than carbohydrates

the same amount of

The melting points of saturated fats are higher than those of unsaturated fats.

True

To calculate nitrogen from crude protein (CP), one should:

divide CP by 6.25