ANSC 1001 Lecture Notes - Lecture 6: Beef Cattle, Dairy Cattle, Anabolic Steroid
Document Summary
Steps of digestion: prehension, mastication, deglutition, regurgitation. Pigeons produce crop milk (what they feed their babies: eructation, digestion. Chemical (starts in the mouth if there is salivary amylase) Not all food gets broken down enough to be absorbed. Testosterone is an example of an anabolic steroid: excretion. Monogastrics: can break down soluble and semi-soluble fiber mechanically. Herbivores: plant products as food, cattle, sheep, horses, rabbits, polygastric or enlarged cecum, cellulase to break down plant products. Monogastric animals: chickens, pigs, dogs, turkeys, cats. Ruminant animals: beef cattle, dairy cattle, goats, sheep, deer. Monogastric digestive anatomy: proteins start digestion in the stomach (proteases); reduced to peptides. Peptides are reduced to amino acids in the small intestine and absorbed: fats are only digested in the small intestine. Bile salts and lipases break fats down to fatty acids. They are then absorbed: starch starts digestion in the mouth.
