Animal Science Unit Goat Dissection Review Digestive Tract

Digestive Tract Anatomy Overview � Goats are considered Ruminants ◦ An animal that chews

Name That Part! • Thick, cartilage rings • Leads to lungs • AKA “Windpipe”

Name that Part � No good photos available… � Thin tube that carries food

Continued… � Hint…Digests food � Very different to human equivalent � Goat has 4

Purpose of Each Stomach � Rumen ◦ Fermentation of feed � Reticulum ◦ AKA

Intestines…which comes first? � Small Intestines � Large Intestines ◦ ◦ ◦ ◦ Much

Other organs identified…. � Which organ? � Describe texture � Were all organs this

Identify the organ… � Where was this in relation to the lungs? � Is

Next organ… � Located directly below lungs… � How large was this organ? �

Final organ � What shape? � Where was the organ? � Did you see

Credits � Photographs ◦ Intro. to Agriculture & Natural Resources Students �Spring 2013 �Milton

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Animal Science Unit Goat Dissection Review

Digestive Tract Anatomy Overview � Goats are considered Ruminants ◦ An animal that chews a cud and has a 4 compartment stomach ◦ Cows, Sheep, Goats, Deer, Zebras � All other livestock are Monogastrics ◦ Simple stomach that resembles human digestive tract with some modifications ◦ Horses, swine, chickens, rabbits

Name That Part! • Thick, cartilage rings • Leads to lungs • AKA “Windpipe” • TRACHEA

Name that Part � No good photos available… � Thin tube that carries food from mouth to…? ? ? � Sometimes we joke that food doesn’t go down this “tube” and that it enters the trachea � ESOPHAGUS

Name this part!

Continued… � Hint…Digests food � Very different to human equivalent � Goat has 4 -chambered stomach ◦ Baby goat does not have fully developed stomach ◦ We couldn’t see 4 different compartments

Undeveloped Ruminant Stomach

Developed Ruminant Stomach

Purpose of Each Stomach � Rumen ◦ Fermentation of feed � Reticulum ◦ AKA “Honeycomb” ◦ Catches large particles � Omasum ◦ AKA “The Bible” ◦ Water Absorption � Abomasum ◦ AKA “True Stomach” ◦ Digestion of particles

After the stomach…

Intestines…which comes first? � Small Intestines � Large Intestines ◦ ◦ ◦ ◦ Much longer in length What length did we measure? Nutrient Absorption Reddish/Pink in color Larger in diameter Greenish color Secondary fermentation Solid waste storage

Other organs identified…. � Which organ? � Describe texture � Were all organs this texture?

Identify the organ… � Where was this in relation to the lungs? � Is this organ a muscle? � Did you see segments within this organ?

Next organ… � Located directly below lungs… � How large was this organ? � Describe its appearance.

Final organ � What shape? � Where was the organ? � Did you see layers?

What went wrong?

Credits � Photographs ◦ Intro. to Agriculture & Natural Resources Students �Spring 2013 �Milton Hershey School � Goat Specimens ◦ Windy Hill Farm—The Romberger Family �Pitman, PA