Past questions Flashcards
Full-fat soya treatment is done by:
Uni-pro soya
What does a complete premix contain?
Vitamins, Micro-elements, Macro-elements
What is the protein content of cereals (corn, wheat, barley, oat rye)?
10-15% Low
What happens when lignin content increases?
Digestibility decrease and feed intake increases
What can lectins cause?
They adhere to the mucous membrane of the intestine and damage the absorption (Ca2+)
what is the highest dose of carbamide (urea) a cow can eat?
20-30g/100kg BW
What does feed intolerance mean?
A reproducible, unpleasant reaction to a specific ingredient, which is biochemically or physiological based.
What is the result of vitamin C deficiency in fish?
Scoliosis, Lordosis (both spinal deformities)
In investigation of feedstuff, you can detect
Feather meal, fish meal
What are the anti-nutritive factors of Vicia faba (horse bean)?
Tannin, lupinin and spartein
How much Dry Matter content is there in fresh pasture grass?
20-30%
What is the anti-nutritive factor in alfalfa?
Saponin
What is the discount factor of corn silage?
0.053 = 5.3%
What will happen if you give a lot of by-pass protein to the Dairy cows?
Time between parturition and new artificial information (Artificial insemination) will increase
Protein content in cereals (corn etc.)?
10-14%
What can lectins cause?
Difficulty of Ca2+ absorption
In which species has nutrition a role in ovulation?
Sheep. The status of the ova changes with change in energy.
They are used as silage additive
All of them (cereal grains, molasses, organic acids)
What are the molasses a good source of?
Energy and S
Which factors decrease digestibility of proteins?
CP content of diet should be minimum 9-11%. NH3 concentration in rumen fluid minimum 3-4 mmol/L
The discount factor of corn silage is 0.053. It means:
The digestibility of the corn silage will decrease by 5.3%
What is the average discount factor?
0.04 4%
Which are used as a liquid protein source?
Neither (molasses nor propylene glycol)
What is the principle of silage making?
Anaerobe fermentation; with lactic acid production
Which amino acid is most sensitive to the over-heating of feed?
Lysine
Can be used as silage additives
All of them. (cereal grains, molasses and organic acids
What is the meaning of Bulky Feed?
Big volume with low dry matter content
What kind of feed is the roughage?
Bulky feed —> The indigestible portion of plan foods that pushes food through the digestive system; absorbing water and easing defecation
How big is the CF content of roughage?
18%
What is the source of gossypol?
Cottonseed, field bean
If by-pass category in feedstuff is small
Most nitrogen of the feedstuff will be degraded in the rumen
How do we sterilise lab feed?
Gamma irradiation
What is the consequence of fiber deficiency?
Digestion problems
What can be the cause of eye cataracts?
Excessive amounts of fish meal/bad fish meal; which causes and increased cholesterol
How should motherless rabbits be fed?
Freeze-dried colostrum with additional vitamins, bacteria and enzymes
In which of the following substances is the energy value 5 MJ/kg
Straw
What is the Ca:P ratio in pasture grass
1:10
Which one is a feeding standard?
NRC: committee on animal nutrition, national research council
Which factors decrease digestibility of proteins?
Crude fiber, Age, Anti-nutritive substance
What is the P:E ration in duck food?
CP: 11%
DCP: 5%
DE: 10MJ/g
ME: 11MJ/g
