ANSC 485 Lecture Notes - Lecture 1: Hindgut Fermentation, Hypsodont, Soft Palate
Document Summary
Horses are non-ruminant hindgut fermenters: single-chambered stomach, enzymatic digestion in foregut, mouth (amylase, small intestine (nutrient absorption, fermentative microbial digestion in hindgut, cecum (production of vfas, rectum, cecum and large colon vs rumen, teeth. Stallions/geldings = 40: 42 with wolf teeth. Incisors and cheek teeth: premolars and molars. Up and down motion: pelleted feed and grains. Issues with articulation : weight loss, abnormal growth or wear. Older horses have angled incisors: pharynx. Elongated soft palate: prevents horses from breathing through their mouth, prevents movement of material back up the esophagus, causes an inability to regurgitate or vomit. Esophageal sphincter: prevents movement of material back into the stomach, equine stomach. Non glandular: no glands to secret acid, mucus, or digestive enzymes. Glandular: glands that secret stomach acid and pepsin. Pylorus: farthest portion of the stomach from the mouth, pyloric sphincter leads into small intestine. No gallbladder: bile is secreted by the small intestine, respiratory system.
