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

2019
Views:

381

Pages:

9
Author:

Gemma S

The Ruminant Digestive System Objectives  Compare the last two components of ruminant animals.  Analyze the importance of small and large intestines for ruminant animals. Ruminant Digestive Systems  Omasum - section that is round and muscular.  “Grinds” the food material and prepares the food material for chemical breakdown.  Has many folds in its lining, often said to look like the pages of a book  Reduces particle size of digesta even further  Some absorption starts to take place here Ruminant Digestive Systems  Abomasum - very similar to the stomach of non- ruminants.  this is where the majority of chemical breakdown of food material occurs.  The “true stomach” of the ruminant animal  Enzyme secretion takes place here  Acts like a monogastric stomach  Produces HCl, Pepsinogen/pepsin for digestion  Also produces lipase in early stages of life  Also produces mucus for protection Ruminant Digestive Systems  Small Intestine - where most of the food material is absorbed into the bloodstream  Contains three sections:  duodenum  jejunum  ileum Ruminant Digestive Systems  The food material is continually squeezed as it is moved through the small intestine, becoming more solid.  The majority of the food material absorption occurs in the duodenum and the jejunum. Ruminant Digestive Systems  Large Intestine - begins to prepare unused food material for removal from the body  a portion of the large intestine in some animals contain pouches that may contain enzymes for further species-specific digestion (horses and rabbits (cecum)). Ruminant Digestive Systems  Colon - collects the unused food material that is to be removed from the body  Rectum - “poop chute”  Anus - opening through which the waste is removed.  Controlled by sphincter muscles, that also help protect the opening. Review  Compare the last two components of ruminant animals.  Analyze the importance of small and large intestines for ruminant animals.