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Animal Digestion
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3. What is animal digestion?
Look at the pictures below:
How does this relate to agriculture?

4. What is Animal Digestion
If you said: breaking down then you are correct
The actual definition is: process of breaking down food into simple substances that can be absorbed by the body
Another part of digestion is absorption:
-process of taking the digested parts of food into the bloodstream

5. What is Animal Digestion?
A. breaking down of food
B. breaking down of liquid
C. breaking down of air

6. Correct! Great job!
The definition of animal digestion is: process of breaking down food into simple substances that can be absorbed by the body

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8. Digestive Systems
The digestive system consists of the parts of the body involved in chewing and digesting food.
Digested food moves through the animal’s body and absorbs the products of digestion

9. 4 basic types monogastric (simple) ruminant (polygastric)
pseudo-ruminant
avian

10. Monogastric or simple contains a single-chambered stomach
found in humans, swine, dogs, and cats.

11. Monogastric
What animals have a monogastric system?

12. Correct! Great Job!
Pigs, dogs, cats and humans have a monogastric digestive system

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14. Ruminant or polygastric
One large stomach divided into four compartments
found in cattle, sheep, and goats.
An animal with this kind of digestive system is called a ruminant

15. The rumen is the largest section of the stomach
Digestive systems
The rumen is the largest section of the stomach
60% of the stomach.
Contains bacteria and other microbes
that promote fermentation
Food is ingested, eructated (belched up), chewed, and then swallowed again

16. Digestive systems The reticulum Has honeycomb-like ridges
Aids in keeping the food in the rumen mixed with water and saliva
Until it is the right consistency
Once the right consistency is reached, the mixture can pass on into the lower digestive tract

17. The omasum is a small compartment Main sight for water absorption
Digestive systems
The omasum is a small compartment
Main sight for water absorption
particles are squeezed and dehydrated, as well as sorted
The compartment acts as a filter for the abomasum

18. The abomasum, or “true stomach,” is the site of digestion
Digestive systems
The abomasum, or “true stomach,” is the site of digestion
Secretes gastric juices consisting of hydrochloric acid and pepsin
The abomasum is similar
to the stomach in a
monogastric animal

19. Ruminant Digestive System
What are the four chambers of a ruminant stomach?

20. Correct! Great Job!!
Rumen, Reticulum, Omasum, and Abomasum

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22. Pseudo Ruminant
A pseudo-ruminant can utilize large amounts of roughages because of its greatly enlarged cecum and large intestine
Examples of pseudo-ruminants are horses, rabbits, guinea pigs, and hamsters.

23. Pseudo Ruminant
Why can pseudo ruminant’s consume large amounts of forages?

24. Correct! Great Job!
Pseudo ruminants can consume large amounts of forages because their enlarged cecum.

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26. The avian digestive system Found in poultry.
Digestive systems
The avian digestive system
Found in poultry.
Since a bird has no teeth, no chewing is involved
The esophagus empties directly into the crop.

27. Digestive systems The crop is where the food is stored and soaked
From the crop, the food makes its way to the gizzard
The gizzard-very muscular organ-which normally contains stones or grit that grinds the food
Digestion in the avian system is very rapid

28. Avian Digestive
Name two important parts of the avian digestive system where the food is stored and where the food is broken down.

29. Correct!
The crop stores the food and the gizzard breaks it down.

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