Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Advanced Nutrition > Exam 1 > Flashcards

Exam 1 Flashcards

1
Q

Which carbohydrate fraction is estimated with the nitrogen-free extract procedure?

A

Highly digestible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Calculate the nitrogen-free extract (NFE) content of the dry feed sample below

Nutrient composition a dry feed sample includes:
CP: 12%
EE: 3.5%
CF: 30.2%
Ash: 8.3%

A

Formula:
NFE= 100 - (ash + fiber + protein + EE)

Answer: 46% NFE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What machine is used to measure the total energy content of a sample?

A

The bomb calorimeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How many kcal of energy is produced from burning 1 gram of lipid?

A

9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How many kcal is produced from burning 1 gram of protein?

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How many kcal of energy is produced from burning 1 gram of carbohydrate?

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the 6 nutrients?

A

Water
Lipids
Protein
VItamins
Minerals
Carbohydrates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a feed ingredient that has less than 20% crude fiber?

A

Concentrates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a feed ingredient that has more than 20% crude fiber?

A

Forage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Give 1 example of a maintenance function

A

Breathing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Give 1 example of a production function

A

Lactation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which procedure is used to measure water content of feed?

A

Dry matter procedure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Why is dry matter important to consider?

A

Water content varies among feeds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Calculate the % dry matter (DM) of the following feed sample:

Sample weight: 38.8 grams
Sample weight after drying: 27.2 grams

A

Formula:
DM= Sample weight/sample weight after drying x100

Answer: 70% DM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Calculate the water % if a feed sample had 70% DM

A

Formula:
Water %= 100-DM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Name the procedure that measures the lipid (fat) content of feed

A

Ether Extract

17
Q

If a sample contains 3% nitrogen, how much crude protein (CP) does the sample contain?

A

Formula:
CP= Nitrogen% x 6.25

Answer: 18.75%

18
Q

Name a dangerous lab procedure used to measure nitrogen content of feed?

A

Kjeldahl

19
Q

Which procedure measures the total mineral content of feed?

A

Ash Oven

20
Q

If a dry feed sample weighing 2.3g contains 8% ash, what % of the dry feed sample is organic matter (OM)?

A

Formula:
OM= 100 - Ash

Answer: 92%OM

21
Q

What does the abbreviation “CF” stand for?

A

Crude Fiber

22
Q

True or false: “Nutrient composition numbers will always be larger on as-fed basis”

A

False

DM will always be bigger

23
Q

A sample of Sudan grass was analyzed fro crude protein. The following lab results were reported on a DM basis:

DM: 85%
CP: 9% (DM basis)

What was the % CP on an as-fed basis?

A

Formula:
CP (AFB)= DM x CP

Answer: 7.7% CP (AFB)

24
Q

A sample of orchard grass was analyzed for crude protein. The following lab results were reported on the as-fed basis:

DM: 91%
CP: 5% (as-fed basis)

What was the % CP on a dry matter basis?

A

Formula:
CP (DMB)= DM / CP

Answer:
5.5% CP (DMB)

25
Q

A digestion trial was conducted to determine digestibility of a certain feed. The composition of the feed sample and fecal sample on a dry mater basis are shown below.

    Feed       Feces CP    12%        7.1% EE.    3.5%.     1.8% CF.    30.2%.   33.4% Ash   8.3%.     19.2%

What is the NFE content of the feed sample?

A

Formula: All from the “feed” column
100 - (CP + EE + CF + Ash) = NFE (feed)

Answer: 46% NFE (feed)

26
Q

A digestion trial was conducted to determine digestibility of a certain feed. The composition of the feed sample and fecal sample on a dry mater basis are shown below.

    Feed       Feces CP    12%        7.1% EE.    3.5%.     1.8% CF.    30.2%.   33.4% Ash   8.3%.     19.2%

What is the NFE content of the fecal sample?

A

Formula: All from the “feces” column
100 - (CP + EE + CF + Ash) = NFE (Feces)

Answer: 38.5% NFE (feces)

27
Q

Feed Feces
CP 12% 7.1%
EE. 3.5%. 1.8%
CF. 30.2%. 33.4%
Ash 8.3%. 19.2%

Assume that an animals DMI is 14.3 lbs. The DME from feces is 7.9 lbs.

Using the given information, what is the crude protein intake?

A

Formula: DMI x CP feed (in decimal form) = CPI (in pounds)

Answer: 1.7 lbs of CPI

28
Q

Feed Feces
CP 12% 7.1%
EE. 3.5%. 1.8%
CF. 30.2%. 33.4%
Ash 8.3%. 19.2%

Assume that an animals DMI is 14.3 lbs. The DME from feces is 7.9 lbs.

What is the Crude protein excretion?

A

Formula: DME x CP Feces (decimal form) = CPE (lbs)

Answer: .6 lbs of CPE

29
Q

Feed Feces
CP 12% 7.1%
EE. 3.5%. 1.8%
CF. 30.2%. 33.4%
Ash 8.3%. 19.2%

Assume that an animals DMI is 14.3 lbs. The DME from feces is 7.9 lbs.

CPI: 1.7 lbs
CPE: .6 lbs

What is the Crude Protein digestibility?

A

Formula: ((CPI - CPE) / CPI) x 100 = CPD (%)

Answer: 64.7% CPD

30
Q

TDN value %
CP 7.8%
EE 5.6%
CF 11.7%
NFE 24.7%

What is the % TDN of the feed?

A

Formula: Sum of all the TDN value %

Answer: 49.8% TDN

Advanced Nutrition (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions