Past qs 3 Flashcards
What is ‘q’?
ME/GE * 100
How is the DM intake approaching formula calculated in the case of Dairy Cows?
Metabolic Body Weight + Fat corrected milk production
How is the DM intake approaching formula calculated in the case of Chicken?
Metabolic Temperature + Egg production
How is the DM intake approaching formula calculated in the case of Beef Cattle?
Metabolic Body Weight + Net Energy
Measurement of body composition via density measurement is done by:
Archimedes principle ! the apparent weight loss of a body immersed in a fluid equals to the
weight of the dispersed fluid.
What are indicator bacteria?
Saprophytes
In Wendee Analysis, what is the part that does not contain Nitrogen?
NFE (Nitrogen Free Extract)
A calculated value determined by subtracting form the Dry Matter…the Crude Protein, Crude
Fiber, Ether Extract and crude Ash
NFE = DM – (CP+CF+EE+Ash)
What is the effect of induced mutation?
There is an increase in essential amino-acid production
How would the requirements be saturated during the first lactation days of Dairy Cattle?
Increased by 20%
Energy Density = ?
Cow - NE/UE = Energy Density
Chicken - ME/UE = Energy Density
What is a silo?
A building for the storage of silage; a place for herbal fermentation. Can be a horizontal or
upright tower; or a plastic bag.
What does Silo Discount Factor mean?
A number that when multiplied by 100, shows the decrement of the nutrients’ digestibility
when the feeding level is enhanced by 1 unit
e.g. It is 0.053 for Corn
Should one calculate DE with the excretion content in the urine?
No. Calculate DE with the excretion content in the faeces only.
For ME; the TOTAL excreted content (faeces and urine) should be calculated
Why are the growth promoters such as CuSO4 not always successful?
Due to genetic environment interaction
How can the bacteria in the rumen be influenced?
Via temperature, pH, and antibiotics
In which species does nutrition have a role in ovulation?
Sheep - the status of the ova changes when there is a change in energy
What is PER (Protein Efficacy Ratio)?
Weight gain per weight of protein eaten
PER = Weight gain / Crude Protein intake
Buffer capacity?
Amino acids have a buffer capacity due to their amphoteric nature
What does protein overdose damage?
Change of uteral fluid (pH, composition)
Causes a possible delay of conception in cattle
The new protein calculating system (protein digestibility system) pays attention to:
Protein degraded in the rumen which are metabolized into microbial protein
(in addition to the Bypass/UDP protein)