Ruminant Digestion

Description

Animal Management Flashcards on Ruminant Digestion, created by Theo Yip on 11/05/2018.
Theo Yip
Flashcards by Theo Yip, updated more than 1 year ago
Theo Yip
Created by Theo Yip over 6 years ago
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Resource summary

Question Answer
Route of digestion? Mouth > Oesophagus > Rumen (fermentation) > Reticulum (curd) > regurgitation / mouth > Omasum > Abomasum (chyme)
Role of a) lips b) teeth c) tongue a) conjunction w/ tongue to collect feed b) molars grind plant material c) collect food, move around mouth
Role of d) saliva e) oesophagus d) aids chewing + forming of bolus, contains salivary lipase and amylase, buffers stomach pH levels e) two way tube to stomach, muscle contractions move food
Rumen Contents continuously mixed w/ contractions of stomach wall, food sent back up oesophagus > solid matter re-chewed > liquid re-swallowed
Reticulum Honeycomb type lining, collects heavy objects animal may accidently eat e.g. nails + smaller particles from rumen > passes to omasum
Omasum Contains folds increasing surface area, water absorption
Abomasum Hydrochloric acid + pepsin break down proteins, lipase from pancreas breaks down fats (mucous also secreted to prevent acid damage)
Small Intestine Duodenum - bile salts aid fat digestion, bicarbonate neutralises stomach acids Jejunum - absorption of carbs +proteins, (aided by villi) Ileum - absorption of Vit B12, bile salts and other remaining nutrients
Large Intestine 1. Caecum - holding chamber, 1 way entry 2. Ascending colon 3. Transverse colon 4. Sigmoid colon - water absorption, active transport of sodium, growth of bacteria synthesizing vitamins 5. Rectum - stores waste products 6. Anus - evacuates waste products
Disorders Obesity, bloat (overdistention of rumen reticulum), acidosis (high acid levels in rumen disrupting microbes), hardware disease (foreign bodies in reticulum)
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