ANSC 3270 Exam Questions With Correct
Answers
what is a nutritionist driven by? - CORRECT ANSWER✔✔-need to
| | | | | | | | | |
precisely match nutrient supply w/requirements at least cost, improve
| | | | | | | | |
efficiency of production, assure environmental sustainability, and
| | | | | | |
maximize net income, assuming a functional and healthy gut w/stable
| | | | | | | | | |
and normal microflora
| |
limitations of young gut biology - CORRECT ANSWER✔✔-inadequate
| | | | | | | |
endogenous enzyme secretion | |
reduced absorptive capacity
| |
inadequate HCl acid secretion | | |
inadequate food and water intake | | | |
why is digestion/absorption not perfect/complete? - CORRECT
| | | | | | |
ANSWER✔✔-limitations of young gut biology | | | |
inherent digestive inefficiency
| |
what feed compounds cause digestive inefficiency and what are the
| | | | | | | | | |
implications? - CORRECT ANSWER✔✔-phytate | | |
,fibre and resistant starch bc it's an anti-nutrient and encapsulates other
| | | | | | | | | | |
nutrients (?) |
inhibitors and toxins | |
ex. chronic enteritis is related to high protein consumption
| | | | | | | |
implications: increase endogenous loss, lower net nutrient absorption
| | | | | | |
what is the proximal gut?
| | | |
describe its microbiota? - CORRECT ANSWER✔✔-crop and small
| | | | | | | |
intestine
gram+ faculatative anaerobes
| |
colonization resistance |
compete for nutrients | |
growth-depressing bacterial catabolites | |
what is the distal gut?
| | | |
describe its bacteria - CORRECT ANSWER✔✔-ceca, colon, cloaca
| | | | | | |
gram- anaerobes |
colonization resistance |
VFA energy production
| |
growth-depressing bacterial catabolites | |
,what effect do undigested/unabsorbed nutrients in the gut have? -
| | | | | | | | | |
CORRECT ANSWER✔✔-stimulate overgrowth of deleterious/pathogenic
| | | | |
microflora in the gut | | |
this reduces fat digestion through deconjugation and dehydroxylation,
| | | | | | | |
so the animal absorbs less energy and toxic products are produced,
| | | | | | | | | | |
both of which contribute to lack of growth
| | | | | | |
how does gut health status influence nutrient utilization? - CORRECT
| | | | | | | | | |
ANSWER✔✔-when nutrients are absorbed, they go to the plasma | | | | | | | | |
nutrition pool |
pathogens cause the animal to eat less, so there are fewer available
| | | | | | | | | | | |
nutrient and increase excretion and maintenance energy requirements,
| | | | | | | |
ultimately resulting in less total energy for the animal to use for growth,
| | | | | | | | | | | | |
and may even cause them to break down tissues in order to get enough
| | | | | | | | | | | | | |
energy to fight disease
| | |
what impact does gut microbial dysfunction have on efficient nutrient
| | | | | | | | | |
digestion and absorption? - CORRECT ANSWER✔✔-causes pathogenic
| | | | | | |
bloom
increases enteric disease risk and gut wall damage
| | | | | | |
causes increased competition for nutrients, gut maintenance and
| | | | | | | |
immunity due to the nutrient diversion | | | | |
increases tissue catabolism | |
, elements of gut health - CORRECT ANSWER✔✔-effective digestion and
| | | | | | | | |
absorption of feed | |
asbsence of gut illness | | |
normal and stable intestinal microbiota
| | | |
effective immune status | |
how does gut health affect performance? - CORRECT ANSWER✔✔-
| | | | | | | |
germ-free: increases efficiency of nutrient utilization, but low barrier
| | | | | | | | |
function
acute pathogen load: sick and inflamed w/poor digestion and high
| | | | | | | | | |
nutrient requirements |
want to be in sweet spot b/w the two extremes
| | | | | | | | |
how do antibiotics get us to the sweet spot for growth promotion? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-antibiotics prevent bacterial colonization, which
| | | | | |
reduces gut microbial use of nutrients and enhances uptake/use of
| | | | | | | | | |
nutrients through SI wall | | |
also reduces sub-clinical infect, growth-depressing gut microbial
| | | | | | |
metabolites, and immunologic stress | | |
antimicrobials and amino acids - CORRECT ANSWER✔✔-antibiotics | | | | | | |
decrease bacteria, allowing the animal to absorb and create more
| | | | | | | | | |
amino acids, especially threonine, which is important for mucus
| | | | | | | | |
production, which is used to fight bacteria | | | | | |
Answers
what is a nutritionist driven by? - CORRECT ANSWER✔✔-need to
| | | | | | | | | |
precisely match nutrient supply w/requirements at least cost, improve
| | | | | | | | |
efficiency of production, assure environmental sustainability, and
| | | | | | |
maximize net income, assuming a functional and healthy gut w/stable
| | | | | | | | | |
and normal microflora
| |
limitations of young gut biology - CORRECT ANSWER✔✔-inadequate
| | | | | | | |
endogenous enzyme secretion | |
reduced absorptive capacity
| |
inadequate HCl acid secretion | | |
inadequate food and water intake | | | |
why is digestion/absorption not perfect/complete? - CORRECT
| | | | | | |
ANSWER✔✔-limitations of young gut biology | | | |
inherent digestive inefficiency
| |
what feed compounds cause digestive inefficiency and what are the
| | | | | | | | | |
implications? - CORRECT ANSWER✔✔-phytate | | |
,fibre and resistant starch bc it's an anti-nutrient and encapsulates other
| | | | | | | | | | |
nutrients (?) |
inhibitors and toxins | |
ex. chronic enteritis is related to high protein consumption
| | | | | | | |
implications: increase endogenous loss, lower net nutrient absorption
| | | | | | |
what is the proximal gut?
| | | |
describe its microbiota? - CORRECT ANSWER✔✔-crop and small
| | | | | | | |
intestine
gram+ faculatative anaerobes
| |
colonization resistance |
compete for nutrients | |
growth-depressing bacterial catabolites | |
what is the distal gut?
| | | |
describe its bacteria - CORRECT ANSWER✔✔-ceca, colon, cloaca
| | | | | | |
gram- anaerobes |
colonization resistance |
VFA energy production
| |
growth-depressing bacterial catabolites | |
,what effect do undigested/unabsorbed nutrients in the gut have? -
| | | | | | | | | |
CORRECT ANSWER✔✔-stimulate overgrowth of deleterious/pathogenic
| | | | |
microflora in the gut | | |
this reduces fat digestion through deconjugation and dehydroxylation,
| | | | | | | |
so the animal absorbs less energy and toxic products are produced,
| | | | | | | | | | |
both of which contribute to lack of growth
| | | | | | |
how does gut health status influence nutrient utilization? - CORRECT
| | | | | | | | | |
ANSWER✔✔-when nutrients are absorbed, they go to the plasma | | | | | | | | |
nutrition pool |
pathogens cause the animal to eat less, so there are fewer available
| | | | | | | | | | | |
nutrient and increase excretion and maintenance energy requirements,
| | | | | | | |
ultimately resulting in less total energy for the animal to use for growth,
| | | | | | | | | | | | |
and may even cause them to break down tissues in order to get enough
| | | | | | | | | | | | | |
energy to fight disease
| | |
what impact does gut microbial dysfunction have on efficient nutrient
| | | | | | | | | |
digestion and absorption? - CORRECT ANSWER✔✔-causes pathogenic
| | | | | | |
bloom
increases enteric disease risk and gut wall damage
| | | | | | |
causes increased competition for nutrients, gut maintenance and
| | | | | | | |
immunity due to the nutrient diversion | | | | |
increases tissue catabolism | |
, elements of gut health - CORRECT ANSWER✔✔-effective digestion and
| | | | | | | | |
absorption of feed | |
asbsence of gut illness | | |
normal and stable intestinal microbiota
| | | |
effective immune status | |
how does gut health affect performance? - CORRECT ANSWER✔✔-
| | | | | | | |
germ-free: increases efficiency of nutrient utilization, but low barrier
| | | | | | | | |
function
acute pathogen load: sick and inflamed w/poor digestion and high
| | | | | | | | | |
nutrient requirements |
want to be in sweet spot b/w the two extremes
| | | | | | | | |
how do antibiotics get us to the sweet spot for growth promotion? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-antibiotics prevent bacterial colonization, which
| | | | | |
reduces gut microbial use of nutrients and enhances uptake/use of
| | | | | | | | | |
nutrients through SI wall | | |
also reduces sub-clinical infect, growth-depressing gut microbial
| | | | | | |
metabolites, and immunologic stress | | |
antimicrobials and amino acids - CORRECT ANSWER✔✔-antibiotics | | | | | | |
decrease bacteria, allowing the animal to absorb and create more
| | | | | | | | | |
amino acids, especially threonine, which is important for mucus
| | | | | | | | |
production, which is used to fight bacteria | | | | | |
