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Ruminants and Non-Ruminant Digestive Tract
Transcript of Ruminants and Non-Ruminant Digestive Tract
Digestive Tract Lets Start With the Basics! What is a digestive tract?
The series of organs in the digestive system through which food passes, nutrients are absorbed, and waste is eliminated. What is a Ruminant?
Any even toed, cloven-hoofed animal, that chews a cud consistently or regularly and has a stomach that is divided into four compartments What is a Non-Ruminant?
A non-ruminant, also known as a monogastric, is any animal that has a single compartment stomach. Something to think about! Do you think the different types of digestive systems allow these animals to consume different types feeds? Whats the difference in the two digestive tracts? The Ruminant Digestive Tract The ruminant digestive tract, also known as the
polygastric digestive tract has one large stomach
that is divided into four compartments
*We see this in sheep, cattle, goats, and deer.
Because the complexity and sure magnitude of this
digestive tract, ruminants can utilize forages of all kinds.
All four compartment work together to fully break down, and digest these forages with enzymes along with a process known as mastication (chewing). Once food is chewed and swallowed, a ruminant has the ability to regurgitate its food and chew it once more. We as humans know this as "chewing a cud" The Ruminant Stomach! The ruminants stomach is made up of 1 stomach and 4 compartments. These compartments are the following and are numbered in the order of digestion:
4. Abomasum The Rumen!
The rumen is the largest section of the stomach and is roughly 60% of the entire stomach. The rumen is also the first compartment of the 4 compartment stomach that food enters. It contains many microorganisms such as bacteria and microbes to promote and assist in fermentation. The rumen is designed so that food can be regurgitated, chewed, and then swallowed once again. The Reticulum!
The reticulum is the second segment of the stomach.
The inside of the reticulum has honeycomb-like ridges on the interior of it and aids keeping food at the right moisture and consistency. The reticulum is also known as the "hardware compartment" because any foreign objects are trapped in the reticulum such as nails, screws, rocks, etc. The Omasum!
The omasum is the main area for water absorption
within the stomach. This is where many of the chewed particles are pushed together and water is "rung" out of the particles. (Similar to wringing our a rag). This compartment also filters. The Abomasum
The Abomasum is known as the true stomach is
where the site of digestion takes place.The
abomasum is similar to the stomach of those in
monogastric animals. What Organs Assist in The Process of Moving
Food in and Out of The Digestive Tract?
*Small Intestine The Non-Ruminant (Monogastric) Digestive Tract! The non-ruminant (monogastric) stomach is known as the "simple stomach". This type of stomach is found in humans, dogs, swine, primates, and cats. The simple stomach is extremely muscular and secretes low acid to help aid in the process of breaking down food. This acid also destroys any bacteria. Unlike a ruminant, a non ruminant does not regurgitate its food to aid in the digestion process. These animals are better able to utilize concentrated feeds than roughage. Something to think about!
If a ruminant is fed similarly to
a non ruminant, will their stomach
begin to act/perform as a non ruminant
stomach? The Parts of a Non-Ruminant Digestive Tract!
Although much simpler than the Ruminant, the Non-Ruminant has a unique set of organs that aide in the digestive process. These organs are the liver and the pancreas. The small intestine assists in the process of breaking down the food particles and begins the process of absorbing nutrients through finger like projections called villi. The large intestine finishes the absorption process and begins dehydrating the particles. The Liver and Pancreas
The Pancreas secretes enzymes that
help break down fat while the liver secretes
bile which digests fat. The liver also stores
iron and assists as a filter. What happens to a ruminant when gas
gets caught in their stomach and it cannot
The gas gets caught in the largest compartment of the stomach. The gas continues to build until the ruminant passes the gas orally or rectally. If the gas is not removed, the ruminant will die due to the excess build up of gas and the pressure on the lungs.