ANSC 3010 Exam 3 UPDATED
QUESTIONS AND CORRECT ANSWERS
What do the initials GRAs stand for? - CORRECT ANSWER Generally recognized as safe
What establishes the FDA as the regulatory agency governing commercial animal feeds? - CORRECT
ANSWER Food, Drug, and Cosmetic Act
Which agency, as part of the Food and Drug Administration provides a forum for the membership and
industry representation to safeguard the health of animals and humans. - CORRECT
ANSWER Association of American Feed Control Officials
In the guaranteed analysis on the feed label, which of the following is not required? - CORRECT
ANSWER Minimum % ash
Ionophores are commonly used feed additives in beef and diary cattle diets. We discussed many
benefits of ionophores!
a) In the rumen ionophores
i. Favor the production of which volatile fatty acid?
ii. Decrease the production of which gas?
b) In addition to the 2 benefits above, list 2 other benefits of ionophores
c) Why is a VFD statement not necessary when using ionophores in animal feed? - CORRECT
ANSWER a) i. Propionic acid
ii. Methane
b) Increase FE and decreased chance on ketosis
c) No human counterpart
One of the ionophores discussed in class is approved for calves and heifers, while another ionophore
discussed in class is approved for lactating diary cows as well as young cattle.. Which ionophore is
approved for both lactating and non-lactating dairy cattle? - CORRECT ANSWER Rumensin
, Paylean and Optaflexx are beta adrenergic agonists that are legal for finishing swine and beef cattle,
respectively. What is the actual repartitioning agent in these products? - CORRECT
ANSWER Ractopamine
Zilmax is also a beta agonist used in beef cattle. It was a topic of controversy a few years ago, and
Tyson and Cargill would not accept cattle that were fed Zilmax. What is the repartitioning agent in
Zilmax? - CORRECT ANSWER Zilpaterol hydrochloride
Repartitioning agents repartition nutrients from _________ to __________ synthesis. - CORRECT
ANSWER Fat to protein
As a "rule of thumb", a feed additive should return a minimum of __________ dollars or more for
each dollar invested. - CORRECT ANSWER $2
A direct feed microbial that consists of a live culture of a fungi and the media on which it was grown
and dried. - CORRECT ANSWER Yeast culture
The only hormone-like product permitted as feed additive in U.S. is - CORRECT
ANSWER Mclengesterol acetate
Polaxalene is added to feed to prevent - CORRECT ANSWER Bloat
Feed additives that may benefit the host animal by improving its gastrointestinal microbial balance
and are often called a "Natural alternative to antibiotics" - CORRECT ANSWER Probiotic
What is meant by the term "ad libitum"? - CORRECT ANSWER Animal can eat/drink as much
as it wants
Since feed ingredients in rations may vary widely in moisture content, we typically balance rations on
a __________ basis. - CORRECT ANSWER Dry matter
What is generally recognized as the most authoritative source of nutrient requirement information for
animals fed in the United States? - CORRECT ANSWER National Research Council (NRC)
QUESTIONS AND CORRECT ANSWERS
What do the initials GRAs stand for? - CORRECT ANSWER Generally recognized as safe
What establishes the FDA as the regulatory agency governing commercial animal feeds? - CORRECT
ANSWER Food, Drug, and Cosmetic Act
Which agency, as part of the Food and Drug Administration provides a forum for the membership and
industry representation to safeguard the health of animals and humans. - CORRECT
ANSWER Association of American Feed Control Officials
In the guaranteed analysis on the feed label, which of the following is not required? - CORRECT
ANSWER Minimum % ash
Ionophores are commonly used feed additives in beef and diary cattle diets. We discussed many
benefits of ionophores!
a) In the rumen ionophores
i. Favor the production of which volatile fatty acid?
ii. Decrease the production of which gas?
b) In addition to the 2 benefits above, list 2 other benefits of ionophores
c) Why is a VFD statement not necessary when using ionophores in animal feed? - CORRECT
ANSWER a) i. Propionic acid
ii. Methane
b) Increase FE and decreased chance on ketosis
c) No human counterpart
One of the ionophores discussed in class is approved for calves and heifers, while another ionophore
discussed in class is approved for lactating diary cows as well as young cattle.. Which ionophore is
approved for both lactating and non-lactating dairy cattle? - CORRECT ANSWER Rumensin
, Paylean and Optaflexx are beta adrenergic agonists that are legal for finishing swine and beef cattle,
respectively. What is the actual repartitioning agent in these products? - CORRECT
ANSWER Ractopamine
Zilmax is also a beta agonist used in beef cattle. It was a topic of controversy a few years ago, and
Tyson and Cargill would not accept cattle that were fed Zilmax. What is the repartitioning agent in
Zilmax? - CORRECT ANSWER Zilpaterol hydrochloride
Repartitioning agents repartition nutrients from _________ to __________ synthesis. - CORRECT
ANSWER Fat to protein
As a "rule of thumb", a feed additive should return a minimum of __________ dollars or more for
each dollar invested. - CORRECT ANSWER $2
A direct feed microbial that consists of a live culture of a fungi and the media on which it was grown
and dried. - CORRECT ANSWER Yeast culture
The only hormone-like product permitted as feed additive in U.S. is - CORRECT
ANSWER Mclengesterol acetate
Polaxalene is added to feed to prevent - CORRECT ANSWER Bloat
Feed additives that may benefit the host animal by improving its gastrointestinal microbial balance
and are often called a "Natural alternative to antibiotics" - CORRECT ANSWER Probiotic
What is meant by the term "ad libitum"? - CORRECT ANSWER Animal can eat/drink as much
as it wants
Since feed ingredients in rations may vary widely in moisture content, we typically balance rations on
a __________ basis. - CORRECT ANSWER Dry matter
What is generally recognized as the most authoritative source of nutrient requirement information for
animals fed in the United States? - CORRECT ANSWER National Research Council (NRC)
