IT AGRI DIGESTIVE SYSTEM Flashcards
is the system in which food is acted upon
through physical (chewing) and chemical
(stomach acids) means.
DIGESTIVE SYSTEM
It includes all parts from the mouth to the
anus
DIGESTIVE SYSTEM
TYPES OF ANIMAL DIGESTIVE SYSTEM
Monogastric
Ruminants
Pseudoruminants
What animals does have Monogastric Digestive System?
Pigs, dogs, cats,
Avian – chicken, turkey
What animals does have Ruminants Digestive System?
sheep, goat, cattle,
camel, giraffe, deer
What animals does have Pseudoruminants Digestive System?
Rabbit, Horse
PROCESS OF DIGESTION
PREHENSION
MASTICATION
INSALIVATION
DIGESTION
ABSORPTION
Conveying of food into the mouth
PREHENSION
Chewing
MASTICATION
Mixing with saliva
INSALIVATION
Mechanical and chemical breakdown of
feed
DIGESTION
Transfer of substance from gastrointestinal tract to the circulatory system via the blood or
lymph.
ABSORPTION
How does Cattle Convey food into the mouth?
Tongue and lower incisors
How does Horses and sheep Convey food into the mouth?
Lips and teeth
How does Poultry Convey food into the mouth?
Beak , bill
How does Pig Convey food into the mouth?
Upper lip (snout)
- Teeth: Pigs and horses have complete set of molars
and incisors
- Ruminants have only a dental pad instead of upper
incisors (no canine teeth)
The mechanical
breakdown of feed into finer particles
Chewing
it allows feed to be well mixed with
the saliva to facilitate swallowing.
Mastication
The mixing of feed with saliva
INSALIVATION
The mechanical breakdown of feed and the
consequent chemical changes brought about by
digestive juices, bacteria and protozoa
DIGESTION
Breakdown of feed particles into suitable
products for absorption
DIGESTION
Transfer of substance from gastro-intestinal tract to
the circulatory (blood, or lymph) system
ABSORPTION
Types of Stomach
- Simple Stomach
➢ Man, Pig - Complex Stomach
➢ Cattle, Sheep, Goats - Simple Stomach with enlarged ceacum
➢ Horses, Rabbits, Guinea Pigs
Poultry digestive system
Mouth
Esophagus
Crop- stores feed
Proventriculus
Gizzard (ventriculus)
Liver
Gallbladder
Small Intestine
Large Intestine
Cloaca
Vent
ingesta holding and moistening
connects mouth to crop
Esophagus
can be used to reduce particle size
prehensile organ
Mouth
is the stomach in a bird, where gastric enzymes and hydrochloric acid
are secreted.
Proventriculus
a muscular area which contains grit; the involuntary muscular
contraction aid in the mechanical breakdown of food
particle size reduction (similar to mastication)
Gizzard (ventriculus)
produces bile that acts on fats
Liver
stores the bile, is a thin-walled muscular green sac found on the
ventral surface of liver.
Gallbladder
Functions in mixes juices, digestion and absorption of feed and nutrients
just as in other monogastrics,
Small Intestine
Functions primarily to absorb water, dry out indigestible foods and
eliminate waste products
Large Intestine
The only hole for the reproductive and digestive system of a chicken.
– The cloaca, also known as the vent, is where chickens poop from, where the eggs come out, and
where they mate with a rooster.
– Location where the papilla of the male bird deposits semen
Cloaca
