livestock_digestive by LTrunk3487

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									Livestock Digestive Systems

Ruminant Digestive System
• Objectives:
– Know the four parts of the ruminant stomach. – Know examples of animals that have a rumen. – Be able to describe the function of all four of the parts of the ruminant stomach.

What are some animals that have Rumens?

?

Cattle

Sheep

Goats

Deer

Elk

What do all of these animals have in common?
• They all
live off of grass, and other roughages.

Why can’t we live off of the same things cows eat?

How can a Ruminant digest these things?
• Through the process of rumination
– Eating rapidly, regurgitating and masticating their feed. (Chewing their cud)

• With specialized structures in their stomach
– Ruminants have microorganisms living in them that break down cellulose for them and make those nutrients absorbable.

What are these four structures?

Rumen
• Large fermentation vat • Microorganisms break down cellulose
– Creates lost of gases (methane) – Ruminants have to be able to eructate (belch)

• Some nutrients are absorbed • Roughages are reduced in size

Rumen Feed Storage
Gas
Today’s Hay Yesterday’s Feed

Rumen (Punch)

Reticulum
• Collects objects that shouldn’t be in the
digestive system.
– Nails – Screws – Baling wire

• Magnets are placed into many dairy animals
reticulums.

Reticulum (Hardware Stomach or Tripe)

Omasum
• Works to remove water from the food

• Absorbs fatty acids

Omasum (manyplies)

Abomasum
• Glandular Stomach (like yours) • Secretes digestive juices. • Breaks down food stuff further for
absorption. • Absorbs some nutrients.

Abomasum (True Stomach)

Order that food moves.
• • • •
Rumen Reticulum Omasum Abomasum

Hint to remember Alphabetically back-words. Ru Re O A

Review
Give me an example of an animal that has a rumen? Name the four compartments of the ruminant stomach? What does a rumen help and animal break down that we can’t? What are the common names of the four parts of the ruminant stomach?

Nice Work! Now on to the assignment!


								
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