NU 448 ACTUAL TEST PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉What is the crude protein equivalent of NPN? Answer: % N from
NPN times a factor of 6.25.
◉How do microbes utilize NPN? Answer: Microbes can synthesize
microbial protein from the degradation of NPN and carbon
skeletons.
◉What is the rate of degradation of NPN by microbial urease?
Answer: Very rapid.
◉What is the conversion efficiency of NPN to microbial protein
when the ration is high in readily available carbs? Answer: 75-90%.
◉How does the digestion of dormant grasses affect NPN utilization?
Answer: NPN is used poorly (0-50%) depending on other
supplement ingredients and feeding frequency.
, ◉What is the role of ruminal degradable protein? Answer: Microbes
break down protein sources to produce microbial protein supplying
essential amino acids.
◉Why do some animals require ruminal bypass protein? Answer: To
meet protein requirements that cannot be met by degradable
protein sources alone.
◉What are the signs of protein deficiency in animals? Answer:
Reduced appetite, birth weights, colostrum and milk production,
hormonal production, and fertility.
◉How is starch digested in ruminants? Answer: Via fermentation by
microbes producing VFAs, which are used for amino acid and B-
complex vitamin synthesis.
◉What is cellulose? Answer: A structural or fibrous polysaccharide
requiring microbial digestion.
◉Where does cellulose digestion occur in non-ruminants? Answer:
In the cecum.
◉What is the primary site of fiber digestion in horses? Answer: The
cecum.
QUESTIONS WITH SOLUTIONS GRADED A+
◉What is the crude protein equivalent of NPN? Answer: % N from
NPN times a factor of 6.25.
◉How do microbes utilize NPN? Answer: Microbes can synthesize
microbial protein from the degradation of NPN and carbon
skeletons.
◉What is the rate of degradation of NPN by microbial urease?
Answer: Very rapid.
◉What is the conversion efficiency of NPN to microbial protein
when the ration is high in readily available carbs? Answer: 75-90%.
◉How does the digestion of dormant grasses affect NPN utilization?
Answer: NPN is used poorly (0-50%) depending on other
supplement ingredients and feeding frequency.
, ◉What is the role of ruminal degradable protein? Answer: Microbes
break down protein sources to produce microbial protein supplying
essential amino acids.
◉Why do some animals require ruminal bypass protein? Answer: To
meet protein requirements that cannot be met by degradable
protein sources alone.
◉What are the signs of protein deficiency in animals? Answer:
Reduced appetite, birth weights, colostrum and milk production,
hormonal production, and fertility.
◉How is starch digested in ruminants? Answer: Via fermentation by
microbes producing VFAs, which are used for amino acid and B-
complex vitamin synthesis.
◉What is cellulose? Answer: A structural or fibrous polysaccharide
requiring microbial digestion.
◉Where does cellulose digestion occur in non-ruminants? Answer:
In the cecum.
◉What is the primary site of fiber digestion in horses? Answer: The
cecum.
