Transcript Avian Digestive System - CYF MEDICAL DISTRIBUTION

The Avian Digestive System
By
Gemma Dalena
Overview of Information Presented:
 The Avian Digestive System
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Parts of the Avian Digestive System
Esophagus
Stomach
Small Intestine
Large Intestine
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Information Guide
All Information Provided by this PowerPoint
Presentation can be found on the at:
http://www.calaged.org/ResourceFiles/Curriculum/advcluster/3000.htm
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Under the California Agriculture Core Curriculum Animal Science
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Animal Physiology –(CLF3201) The Digestive Process
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The Avian Digestive System
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This digestive system is adapted for grinding hard or
encased (shells of seeds) food.
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Parts of the Avian Digestive System
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The Mouth
 Saliva is secreted
to moisten food
and aid in
swallowing since
avian species do
not have teeth.
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The Esophagus
 The Esophagus connects the mouth to the stomach.
Esophagus
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The Esophagus
 has a modification which is called the "crop" where
food is stored and further moistened
Crop
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The Avian Stomach
Consists of Two Parts:
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The Avian Stomach
Consists of two parts.
1.The "proventriculus" which provides digestive
secretions.
Proventriculus
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The Avian Stomach
2. The "gizzard" which is located after the
proventriculus, it is very muscular and is used for
grinding food.
Gizzard
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The Small Intestine
 The small intestine varies in length depending on the diet. It is
longer in herbivores (plant eating birds) and shorter in carnivores
(flesh eating birds).
Part of the
small intestine
Parts of the
small intestine
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The Small Intestine
 The functions of the small intestine
are similar to the small intestine of
ruminants and monogastrics
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The Large Intestine
 The functions of the large intestine are similar to
the small intestine of ruminants and
monogastrics.
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The Large Intestine
Ruminants
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The Large Intestine
Monogastrics
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The Large Intestine
 The "cloaca" which, is located at the terminal end of the large
intestine is a chamber into which the urinary and genital canals
open.
Large Intestine
cloaca
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The Large Intestine
 At the junction of the small and large intestine is
where the two "ceca" pouches are located.
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The Large Intestine
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The two ceca pouches further contribute to aiding in fiber
digestion and absorption.
Ceca Pouch
Ceca Pouch
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