Ruminants
What is an example of a ruminant?
cow, deer, giraffe, and goats
What are two important structures in the rumen?
1. Ruminal pillars
2. rumen papillae
What is the function?
particle sorting!
What does the omasum do?
filters digested materials
The abomasum is also known as the _____
glandular stomach
What makes ruminants unique from other animals?
-4 chambered stomachs
-go through rumination!
What do the ruminal pillars do?
contract the rumen to mix, digest, and ferment feed
What does the reticulum look like?
honey comb
What structures are important in the omasum?
muscular folds
What does the abomasum do?
secrete gastric acid, digestive enzymes, lysozyme and mucus
Why is rumination important?
It allows them to fully digest fibrous plant material by breaking it down into smaller material
What do the rumen papillae do?
increase the surface area of the rumen and increase absorption
What happens to the particles that don't pass through and why don't they pass through?
They go back into the rumen to be redigested because the particles were to large
What is the purpose of the muscular folds?
increase surface area ->increases water and nutrient absorption
what does lysozyme do?
breaks down microbial cell walls
What does rumination do/create?
microbial digestion and fermentation!
What digest feed in the rumen?
rumen microbes
What happens to the particles that flow through and why do they flow through?
They travel to the omasum because they were small (digested) enough!
Where do nutrients go after flowing through the omasum?
abomasum
Where do nutrients go after flowing through the abomasum?
small intestine
What are the 4 stages of rumination?
Regurgitation, Rechewing, Re-salivation, and Re-swallowing
What step of rumination is the rumen involved in?
Step 1and 2
(regurgitated from rumen and re-swallowed back into rumen)
What step of digestion involves the reticulum?
step 3!
What step of digestion involves the omasum?
step 4
what step of digestion involves the abomasum?
step 5