The%20Ruminant%20%20Digestive%20System

1
Avian Digestive System
2
Hypothesize Why are tukeys found so commonly
on the side of the road?
3
The avian digestive system is the type found in
poultry.

• This system differs greatly!
• Since a bird has no teeth, no chewing
• The esophagus empties directly into the crop.
• Crop where the food is stored and soaked.
• Proventriculus glandular stomach (HCI and
  gastric juices) enzymatic (like a human stomach)
• Gizzard very muscular organ, which normally
  contains stones or grit that grinds the
  food.
• Cloaca posterior opening (similar to anus)
  one opening for urinary, intestinal and
  reproductive tract

4
(No Transcript)
5
Hypothesize Will digestion be fastest in
a monogastric, polygastric or avian GI? Why?
6
Questions?
7
Just for Fun
Which mammal has the longest digestive system?
Guesses???
8
Koala Largest Herbivore
9
Just for Fun
How long does digestion take Guesses???
10
IT DEPENDS

• What was eating
• What animal is digesting
• If digestive tract/bacteria are working correctly
• (Average 3-6 hours)
• Ferrets FASTEST (30 min)

11
Sloths Everything about a sloth is slow-moving,
including his digestive system. It can take up to
a month
12
Just for Fun
How many stomachs does a whale have? Guesses???
13
Whales have a three-sectioned stomach. The first
section of a whale's stomach breaks down its food
by crushing. The second section mixes the food
with digestive juices and the third further mixes
the food and digestive juices.
14
Rate your knowledge Digestive Expert
Green Digestive Novice Yellow Ive Digested
Something Before - Red
15
Additional Resources

• Video Link to Fistula Cow
• Video Link to 3D Horse Digestion Guide
• CrashCourse Video Digestion
• Cat Dissection Video Digestive Tract

16
Questions?