ANSC 1011 Lecture Notes - Lecture 3: Vitamin, Dairy Cattle, Rumen
Document Summary
Methods of digestion: physical or mechanical. Gi tract and nutrition of non-ruminants and rumindants. The physical, chemical, and enzymatic means the body uses to breakdown feed in order to absorb nutrients for sustaining life. No, but horses, rabbit, and guinea pig are the exception. Ruminants (complex stomach- 4 compartments: diet. Steps in digestion: prehension: process by which the animal brings food into its mouth. Forages: mastication: chewing (chickens don"t chew because they don"t. Because it reduces particle have teeth). size for swallowing. Chew their cud : also termed rumination, regurgitates food and mixes it with rumen fluid. (this increases ph of rumen) saliva is basic and keeps rumen ph near 6. Mixes bacteria and forage so that the bacteria can attach to the forage. 40,000-50,000 times a day (typical dairy cow) increase ph of rumen. Rooster: salivation: the mixing of saliva with food during mastication and helps prevent daily occurrence of bloat. Stomach: where chemical and enzymatic digestion begins.
