nutrition 1 past quetsions

Question 1

Carotene in the blood can be measured in the case of

a) cow
b) cow and sheep
c) cow, goat and sheep
d) cow, goat sheep and pig

Answer 1

a) cow?

sheep, goat and pig have no colour change in serum

Question 2

Which vitamins function is to help protein synthesis

Answer 2

vitamine B6

pyridoxine, pyridoxal, pyridoxamine

Question 3

Which vitamins function is to carry CO2…

Answer 3

biotin (i følge google er det en cofactor i syntheser som flytter på co2)

Question 4

Synthetic antioxidants

Answer 4

BHA - butylated hydroxianysole
BHT - butylated hydroxitoulene
EMQ - etoxy methylquinolin

Question 5

What are prebiotics?

Answer 5

non digestible, beneficially affect host by selectively stimulating the growth or activity of bacteria (bifidobacteria, lactobacilli) in the colon 
"food for bacteria"
- inulin
-FOS, GOS, MOS
-soybean germ oligosaccharides
-izomalto-oligosaccharides
-xylo oligosaccharides
- lactulose

Question 6

Descending dermatitis?

Answer 6

Zn (vet ikke helt om\ dette stemmer men den gir og dermatitis så mybee)
B5 - pantothenic acid

Question 7

Ascending dermatitis?

Answer 7

biotin (ascending ulcerative dermatitis)

Question 8

Which vitamin can be measured by glutathione peroyixdase activity (something like that)

Answer 8

B2 riboflavin

Question 9

The formula for apparent metabolizability

Answer 9

q=(ME/GE)x100

Question 10

The formula for biological value of a protein.

Answer 10

BV=retained N/ absorbed N

Question 11

The percentages of bacteria in the rumen and the kinds of bacteria in the rumen and gut of a Ru.

Answer 11

main flora >90%
satelite flora <1%
residual flora <0,1%

(good bacteria should be 90-99%, called Eubiosis when good bacteria are found in this proportion.
When they are below this percentage it’s called dysbiosis.)

Question 12

Know the barriers of the gut of a ruminant..

Answer 12

first line of defence: mucous layer - physiological barrier
-secreting antimicrobial peptides in respose to pathogens in gut lumen 
second line: epithelial cells + class of innate lymphoid cells

(anatomical barrier (the enterocytes make it up).. then the
microbiological barrier (good bacteria of the gut prevent the baddies from being absorbed), Immunoligcal
barrier… and humoral barrier..)

Question 13

Which mineral or vit is needed for cartilage SYNTHESIS-

Answer 13

vitamin C

Manganese

Question 14

The mineral whose deficiency causes bad coat problems…

Answer 14

copper, sulphur (iodine?)

zinc, manganese, selenium? can test in hair

Question 15

which Vitmin is slipping of the calcaneous tendon in turkey?

Answer 15

biotin

Question 16

Percentage dry matter intake of farm animals

Answer 16

farm animals: 1,5-5% of BW

• eg. dairy cow 2-3%
• eg horse 1,5-2%

Question 17

WHY do we use NEg and NEm to express the energy requirement of beef cattle?

Answer 17

neg=net energy gain
nem= net energy for maintainance
finner ikke svar, men antar at det er for å vite hva som trengs for å maintaine vekta, for så å vite hva den kan gaine for å få enda større okser??

Question 18

Crude Protein can be used to express the protein requirement of which animal listed below?

Answer 18

monogastric animals

Question 19

Urea can be supplemeted to ru in what amount?

Answer 19

20-30g/100kgBW/day

Question 20

DOSAGE of VIT A for monogastrics?.

Answer 20

2-10000 IU/day

ru: 40-50000

Question 21

Which vit deficiency causes pallegra?

Answer 21

niacin

Question 22

The main antinutritve factor of alfalfa

Answer 22

saponins (mycotoxin salframine)

Question 23

Which vit deficieny cause EXUDATIVE dermatitis..

Answer 23

B6 pyridoxine, pyridoxale, pyridoxamine

Question 24

Which vit deficiency causes pallegra?

Answer 24

B3 niacin, nicotinic acid

Question 25

Know the limiting amino acids!!! limiting aa in alfalfa.. in cereals.. etc.

Answer 25

cereal grain:

• wheat: lysine
• corn: tryptophane, lysine
• shorgum and rice: threonine