University:
Sam Houston State University
Course:
BIOL 2413 | General Zoology
Academic year:

2022
Views:

454

Pages:

12
Author:

SpaceCadet101

Review of Ruminant Digestive Systems Animals that have ruminant digestive systems eat forage rapidly and later regurgitate the feed, known as the cud.  The regurgitated food is chewed thoroughly, swallowed and then more feed is regurgitated. This process is continued until all the feed is masticated.  How the Ruminant System Works  Once the feed has arrived in the rumen, it is mixed with microorganisms, such as bacteria, protozoa and certain fungi. They assist the ruminant animal in utilizing cellulose, and in synthesizing protein from non-protein nitrogen and certain vitamins. How the Ruminant System Works Then the feed arrives in the Reticulum that is commonly referred to as the “honeycomb”. Its major function is to work with the rumen in mixing and grinding the feed.  Also functions in screening foreign objects from the digestive system.  How the Ruminant System Works  Then the feed arrives in the omasum, or the third compartment referred to as “manyplies.” The omasum assists in removing 60 to 70 percent of the water before the feed enters the abomasum. How the Ruminant System Works  Once the feed has arrived in the abomasum, or the “true stomach,” digestive juices, which contain enzymes, break down proteins, and add moisture to the feed as it enters the small intestine. Small & Large Intestine in Review From the abomasum, the feed enters the small intestine where nutrients are absorbed in the blood system.  From the small intestine, the food passes into the large intestine where the water is removed and the feed is prepared for excretion.  Ruminant Digestive System Student Note Outline Different Digestive Systems  1… 2… 3… The three different types of digestive systems are: Ruminant         Ruminant animals have __________complex stomach structures. A few animals with ruminant digestive systems are_______, __________, goats, _______ and giraffes. The four stomachs are called the_________, ____________, ____________ and the _____________. __________are usually ruminant animals. Parts of Ruminant System        Mouth-teeth and lips hold food and chew it, saliva moistens food. Esophagus-_______________stomach. Four Compartments: 1st2nd3rd4th- 1st Compartment: Rumen   Large fermentation vat, where ___________and ___________ thrive to break down roughages. Rumen is lined with papillae to increase ____________and absorption 10/24/2024 23 Rumen  Contains microorganisms that digest ____________and can synthesize amino acids as well as B-complex vitamins. Rumen Sizes in Cattle & Sheep Cow-____________ Sheep- ____________