Title of the project
Cow Digestive
System
Synopsis of the project
Explain
to the students about the digestive system of cow. Cow have unique digestive
system because it have a stomach that divide into four compartment which is
rumen, reticulum, omasum and abomasums. We will asked the student understanding
about the cow digestive system before and after the lecture of ruminants
digestive system.
As
the general, the function of digestive system is the mechanical and chemical
breakdown of food and its absorption into a the blood. The digestive system
functions is same for all living animals that live that breaks the molecules or
particles food into small pieces before
lastly remove though the anus. For cow, it’s have stomach divide into four main
compartment. Not like human that have only one. This complex four stomach
arrangement gives the ruminant a huge advantages. They can convert forages into
energy to make milk and meat, and can utilize non-protein nitrogen like urea as
a protein source
The
rumen is the largest of the four compartments and its contains billions of
bacteria, protozoan, molds and yeast. It placed left side of abdomen. It have
papillae lining and also have muscular pillars. For reticulum, this stomach closes to the heart cavity. Its sits
underneath and toward of front of the rumen, laying against the diaphragm. The
reticulum is called the “honeycomb” because of the honeycomb appearance of its
lining. It also acts as a trap of foreign objects ingested by a cow. In facts,
the two stomach (reticulum and rumen) work very closely and are not actually
separate compartments. It just divides by a small fold of tissue only. The main
function of the reticulum is to collect smaller digests particles and move them
into the omasum, while the larger particles remain in the rumen for further
digestion.
The
Omasum is a spherical and connected
to the reticulum by a short tunnel. It is called the “ many piles” or the “
butcher’s bible”. It absorb water and other nutrients from digested materials.
When materials leaves this compartment, it is drier and more packed than when
it exits others. From the omasum, partially digested feed passes to the
abomasums.
The abomasums is the “true stomach” of a
ruminants. It is the compartment that is the most similar to a stomach in a non
ruminants. The abomasums produces hydrochloric acid and digestive enzyme. In
the abomasums, the environment is very acidic with the normal pH around 2.
Objective
1) To
give explanation for all students the function of digestive system as in
general.
2) To
give explanation for all students about the cow’s digestive system in the
simple form and easy to memorizes.
3) Student
can be differentiate between the fours of stomach compartment each other.
The target group
1) Students
in form 4 and 5 life science.
Resources
Internet
Software used
Lecture maker
Organization chart and job
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Project Leader
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Graphic design
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Sound editor
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Video editor
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Animator
