Deck 6

Question 1

Tests of heat treatment quality of soybean products include:

Answer 1

The protein dispersibility and solubility index
The urease activity of trypsin inhibitor

Question 2

Urea can be applied as a source of:

Answer 2

NPN to the corn silage during the ensiling process in the concentration 0.5%

Question 3

Lipase is present in the calf saliva until:

Answer 3

3 months of age

Question 4

Energy requirements in dairy cows is expressed as:

Answer 4

NEL

Question 5

Principal reason of use of urea in daily ration of cattle:

Answer 5

Daily ration low in natural protein

Question 6

Sucrose is digested by calf in the period of pre-ruminal digestion:

Answer 6

Badly

Question 7

How long does the 3 phases of lactation last?

Answer 7

1st: 10 weeks
2nd: 10 weeks
3rd: more than 15 weeks

Question 8

Dairy cow will reach the peak of lactation:

Answer 8

During 1st phase of lactation

Question 9

Recommended protein concentration in dry matter of daily ration of lactation cows in 2nd phase of lactation is:

Answer 9

13-15%

Question 10

Recommended energy concentration in dry matter of daily ration of lactating cows in 2nd phase of lactation is:

Answer 10

6.6-7.3 MJ/kg of Dm

Question 11

Level of nutrition ij 2nd phase of lactation is:

Answer 11

Very high to high, 2.1 to 3 times that of maintenance

Question 12

Recommended dry matter ration from forage and concentration in the 1st phase of lactation is:

Answer 12

60:40

Question 13

Recommended dry matter ration from forage and concentration in the 2nd phase of lactation is:

Answer 13

70:30

Question 14

Recommended dry matter ration from forage and concentration in the 3rd phase of lactation is:

Answer 14

90:10

Question 15

Recommended DM ration during the dry period is:

Answer 15

80:20

Question 16

Recommended crube fibre content in dry matter of dairy ration for lactating cow in 1st phase is:

Answer 16

17-18%

Question 17

Recommended crube fibre content in DM of dairy ration for lactating cow in 3rd phase is:

Answer 17

24-28%

Question 18

Recommended crube fibre content for lactation cow in dry period is:

Answer 18

24-28%

Question 19

Characteristics of first phase of lactation:

Answer 19

RIse and peak of lactation
Negative energy balance

Question 20

Characterize 2nd phase of lactation:

Answer 20

Rise and peak of dry matter intake

Question 21

Characterize 3rd phase of lactation:

Answer 21

Decline and end of lactation

Question 22

Dry period is:

Answer 22

Period of 60 days before the next lactation

Question 23

Recommended energy concentration in daily ration of cow in dry period is:

Answer 23

4.3-6.1 MJ/kg of DM

Question 24

Calf nutrition is period:

Answer 24

from birth until 6 months of age

Question 25

The aim of heifer nutrition is:

Answer 25

optimum body development

Question 26

Time when heifer are bred depends on:

Answer 26

their body weight

Question 27

Daily ration of heifer nutrition of about 6 months of age will be:

Answer 27

Minimal amount of high moisture forage

Question 28

Use of concentrate in daily ration of heifer older than 1 years is:

Answer 28

not necessary when good quality forage meet the requirement of animals

Question 29

Recommended crube fibre content in DM of dairy ration for cows in 2nd phase of lactation is:

Answer 29

20-22%

Question 30

Urea can be applied to:

Answer 30

Corn silage as a source of NPN in the concentration 0.5% in the ensiling process

Question 31

Principal reason for use of urea in daily ration of cattle is:

Answer 31

Daily ration low in natural protein