Avian Digestive System Flashcards
What is the site of gastric juice secretion?
the proventriculus
The proventriculus is the site of what?
Gastric juice secretion of hydrochloric acid, no food grinding happens here
What are the pH levels in the proventriculus?
4
Ingesta passes through the proventriculus how fast?
Rapidly
What’s another name for the gizzard?
The ventriculus
The ventriculus is also called the what?
The gizzard
What do the thick, muscular walls of the ventriculus do?
They reduce the particle size of ingesta. Feed is grinded into small particles
What is grit and what does it do?
Grit is small stones and sand that aid in grinding ingested feed
*The stomach of a bird is equal to what 3 things?
- The crop
- The proventriculus
- The ventriculus (gizzard)
The crop is basically what?
- Pre stomach
- An enlargement of the esophagus where feed can be stored
- Food passes from here to the proventriculus
A birds saliva contains?
Salivary amylase
The small intestine contains most mammalian specie enzymes except?
Lactase
Why are a birds pH levels slightly acidic?
Because birds don’t drink as much water
How long is a birds small intestine?
It’s very short (2-4inches)
What is the site of egg laying and spermatozoa deposition during mating?
The cloaca
