comparative digestive systems Flashcards
what organ is the cecum similar to in ruminants
the rumen
what organ to humans have that used to function similar the the cecum
the apendix
crop(gallus)
storage compartment for food that feeds into the gizzard
salivary amylase
enzyme in saliva that breaks down sugar
what animal does not have salivary amylase in their saliva, and where is it
cows, it is in their nose
order of microbial importance(most to least)
ruminants
horses
monogastric
where is the cecum on on modified monogastric
at the end of the system
why cant horses get protein from bacterial fermentation in the cecum
because the cecum is at the end of the semester
microbial crude protein
bacteria in rumen that makes it work, when they’re washed out of the rumen they get digested as protein
which stomach compartment is also known as the butchers bible
the omasum
why should you not feed horses a lot before or after workout
digestion uses a lot of blood flow so you don’t want blood diverted to other areas
passage rate of monogastric
8-12 hours
passage rate of ruminants
96-120 hours
crude protein of urea
280
mucin
lubrication aid for swallowing
bicarbonate salts
buffer to regulate pH in stomach
urea cycle
capture of nitrogen by ruminants, if it leaves the system it fertilizes the ground and produces nitrogen rich grass to reenter the system
reticulum volume
5%
Rumen volume
80%
omasum volume
7-8%
abomasum volume
8-9%
scratch factor
you need rough food to rub against the side of rumen to keep papillae healthy
which compartment is referred to as the honeycomb
reticulum
what can cause bacteria in rumen to die
acidosis(change in pH)
what causes acidosis
too much readily digestible nutrients
deamination
removes amino group to make amino acids
why should you feed ruminants extra protein in the winter
grass doesn’t have enough nitrogen
three main VFAs
propionate
Acetate
Butyrate
what happens if gasses are not expelled properly
animal will bloat and can cause death if not treated
how to recognize bloat
rumen will swell causing left side of body to look abnormally large
what is the purpose of the urea cycle
preserve nitrogen in the system