Ruminant Digestion Lecture Review

Flashcards covering key aspects of ruminant digestive anatomy and physiology, including stomach compartments, VFAs, pH levels, enzyme presence, and functions of different digestive organs based on lecture notes.

What are the four main compartments of a ruminant stomach?

Rumen, Reticulum, Omasum, and Abomasum.

Name the three primary Volatile Fatty Acids (VFAs) produced during ruminant digestion.

Acetate, Propionate, and Butyrate.

What is the typical pH range of the rumen?

6.5 to 6.8.

What is one gaseous end product of microbial fermentation in the rumen?

Gas.

Does ruminant saliva contain digestive enzymes?

No, ruminant saliva does not contain enzymes.

Describe the unique peristaltic action of the ruminant esophagus.

It is antiperistaltic, allowing food to move in both directions (for rumination).

What is the primary function of the omasum in ruminants?

Water absorption.

Which acid is produced in the abomasum to aid in digestion, and what enzyme functions in its low pH environment?

Hydrochloric acid (HCl) is produced, and pepsin works to break down nitrogen (proteins).

What is the main function of the duodenum in the digestive system?

Inside digestion.

Which organ produces bile, and which organ typically stores it (mentioning an animal that lacks the storage organ)?

The liver produces bile, and the gallbladder stores it, but horses do not have a gallbladder.

What is the primary function of the jejunum and ileum, and what anatomical features increase their surface area?

Their primary function is the absorption of fat, carbohydrates, and proteins, and they are lined with villi and microvilli.