nutrition questions revised

Question 1

Concentration of which element is unipolar through absorption:

Answer 1

Fe (Excretion only through bleeding ?)

in addition, Na is unipolar, regulated at the level of excretion. Zn, Cu, etc, are bipolar.

Question 2

This amino acid form has a characteristic role in nutrition:

Answer 2

Alpah - L-optic form (exception: Methionine)

Question 3

The alkalic state of nutrition says “the more acidic material that is produced in the body the…”

Answer 3

“…more basic material must be taken via the food”

Question 4

The majority of protozoa are not able to digest cellulose?

Answer 4

They mainly digest starch and sugar

Question 5

What will happen if you give a lot of by-pass (protected) protein to the dairy cows

Answer 5

Time between parturition and new AI will increase ( + more milk yield, more fat mobilization)

Question 6

NDF-ADF = ?

Answer 6

Hemicellulose (Neutral detergent fiber – Acid detergent fiber)
(ADF-ADL = Cellulose)

Question 7

Vitamin A relative? (Probably which element is needed for vitamin A synthesis)

Answer 7

Zn and P are needed for carotene – Vitamin A transformation

Question 8

What is ‘k’?

Answer 8

NE/ME*100 (Net energy / Metabolizable energy * 100)

Question 9

What is the protein content of cereals (corn, wheat, barley, oat, rye)?

Answer 9

10-15%, low

Question 10

What is ‘q’?

Answer 10

ME/GE*100 (Metabolizable energy/Gross energy * 100)

Question 11

Measurement of body composition via density measurement is done by?

Answer 11

Archimedes principle – The apparent weigh loss of a body immersed in a fluid equal to the weight of the displaced fluid

Question 12

What are indicator bacteria?

Answer 12

Saprophytes

Question 13

In Wendee analysis, what is the part that does not contain Nitrogen

Answer 13

The NFE (Nitrogen Free Extract) is a calculated value which is determined by subtracting from the DM the crude protein, crude fiber, crude fat and crude ash (DM – (CP + CF + EE + Ash) = NFE)

Question 14

What is an important element for females?

Answer 14

P, Mn – Cause alimentary infertility. Selenium deficiency causes general fertility problems, placenta retention.

Question 15

What can cause secondary Cu deficiency?

Answer 15

S+Mo: they reduce copper absorption!

Question 16

What happens when lignin content increases?

Answer 16

Digestibility decreases and feed intake decreases

Question 17

What is the effect of induced mutation?

Answer 17

There is an increase in essential aminoacid production

Question 18

What is the vitamin K antivitamin?

Answer 18

Dicumarol (Melilotus), Cumarin/warfarin (rat poison

Question 19

What improves the immune state of a cow right after parturition?

Answer 19

Cr

Question 20

Instead of Carbon this ground substance can be built into organic matters and in humans it decreases the danger for arteriosclerosis:

Answer 20

Br or S

Question 21

Deficiency of these substances causes alimentary infertility:

Answer 21

Mn and P

Question 22

Energy density = ?

Answer 22

Cow - NE/UE

Chicken - ME/UE

Question 23

What is a silo?

Answer 23

A building for the storage of silage, a place for herbal fermentation. Can be horizontal, tower (upright) or plastic bag.

Question 24

Deficiency of this substance gives dry dermatitis over the whole body:

Answer 24

Dry + generalized dermatitis 🡪 B2 (riboflavin) deficiency