ARPAS
ARPAS Practice Exam Study Guide
Questions and Answers Graded A+ 2025
If the moisture content of a haylage sample is 55%, what is the dry matter content?
45% DM
If alfalfa hay is priced at $250/ton (10% moisture), what is the value of haylage
(45% moisture) of equivalent quality?
100-10=.90 DM
100-45=.55 DM
250/.90*.55= $152.76/ton
If corn silage at 60% moisture is worth $60/ton, what is the value of corn silage at
70% moisture?
100-60=.40 DM
100-70= .30 DM
60/.40*.30= $45.00/ton
If haylage at 45% dry matter costs $125.00/ton, what is the value of a similar
haylage at 60% DM?
125.00/.45*.60= $166.66/ton
A sample that is tested for digestibility in the laboratory using rumen fluid in a
flask or test tube is said to be done:
In Vitro
The lint on cottonseeds is pure:
Cellulose
What does the term NEFA stand for?
Non Esterfied Fatty Acid
A pulsator cycle is the time, in seconds, for a milking pulsator to complete one
milk phase and one massage (rest) phase.
ARPAS
, ARPAS
True
What should be the average weight gain for a heifer to calve at 24 months of age?
1.8 lb/day
The method of calculation for nonfiber carbohydrates is:
100 - (%NDF + %CP + %fat + % ash)
A freemartin heifer is most accurately called a _______
Chimera
PEM is caused by thiamin deficiency in cattle. What does PEM stand for?
Polioencephalomalacia
B-vitamins are fat soluble.
False
Magnets to collect potentially damaging metal objects should be placed in which
stomach compartment?
Reticulem
The NRC Nutrient Requirements books, published by the National Academy Press,
are developed by subcommittee of the National Research Council.
False
Rumen lactic acidosis caused by what?
Too much lactic acid in rumen
How many days before calving should a cow be dried off?
45-60
Chylomicrons are complex packages by which fat soluble substrates that are
transported from the intestine to the:
Liver
Cows should not lose more than _____ BCS in early lactation.
ARPAS
ARPAS Practice Exam Study Guide
Questions and Answers Graded A+ 2025
If the moisture content of a haylage sample is 55%, what is the dry matter content?
45% DM
If alfalfa hay is priced at $250/ton (10% moisture), what is the value of haylage
(45% moisture) of equivalent quality?
100-10=.90 DM
100-45=.55 DM
250/.90*.55= $152.76/ton
If corn silage at 60% moisture is worth $60/ton, what is the value of corn silage at
70% moisture?
100-60=.40 DM
100-70= .30 DM
60/.40*.30= $45.00/ton
If haylage at 45% dry matter costs $125.00/ton, what is the value of a similar
haylage at 60% DM?
125.00/.45*.60= $166.66/ton
A sample that is tested for digestibility in the laboratory using rumen fluid in a
flask or test tube is said to be done:
In Vitro
The lint on cottonseeds is pure:
Cellulose
What does the term NEFA stand for?
Non Esterfied Fatty Acid
A pulsator cycle is the time, in seconds, for a milking pulsator to complete one
milk phase and one massage (rest) phase.
ARPAS
, ARPAS
True
What should be the average weight gain for a heifer to calve at 24 months of age?
1.8 lb/day
The method of calculation for nonfiber carbohydrates is:
100 - (%NDF + %CP + %fat + % ash)
A freemartin heifer is most accurately called a _______
Chimera
PEM is caused by thiamin deficiency in cattle. What does PEM stand for?
Polioencephalomalacia
B-vitamins are fat soluble.
False
Magnets to collect potentially damaging metal objects should be placed in which
stomach compartment?
Reticulem
The NRC Nutrient Requirements books, published by the National Academy Press,
are developed by subcommittee of the National Research Council.
False
Rumen lactic acidosis caused by what?
Too much lactic acid in rumen
How many days before calving should a cow be dried off?
45-60
Chylomicrons are complex packages by which fat soluble substrates that are
transported from the intestine to the:
Liver
Cows should not lose more than _____ BCS in early lactation.
ARPAS
