basic digestion

basic digestion - Comparative Nutrition Basic Digestion...

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Comparative Nutrition: Basic Digestion 9-27-10
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Objectives Explain the process of how a feedstuff is digested. Compare and contrast digestion in a variety of species
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Digestion Process in which feedstuffs are broken down through mechanical, chemical, and enzymatic methods so that molecules can be absorbed for nutritional purposes of the animal.
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Evolutionary Variety Animals evolved to fit a niche (developed unique systems to best utilize nutrients in their niche) Variety Carnivore Cats and dogs Omnivore Pigs, chickens and humans Herbivore Cattle, horses, rabbits, llamas
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Basic Omnivore Mouth
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Mouth Teeth (not all aspects of mouth and teeth are not just for digestion) Adapted to foodstuff Looks, fighting, etc Tongue Taste, movement of food, breakdown, process of swallowing Saliva Lubrication, amylase breaks down certain carbs Bolus-after chew and swallowed, the food forms into a ball called a bolus Ex. Large pills= bolus Balling gun= implement used to put pill down the throat
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Enzymes Organic catalysts Usually proteins RNA specific Amylase starch Speeds up reaction by brings certain molecules to close proximity. Doesn’t cause reaction to occur. Can be proteins and rna. They have a specific substrate on which they act.
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This note was uploaded on 01/09/2012 for the course ANSC 243 taught by Professor Black during the Fall '10 term at Maryland.

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basic digestion - Comparative Nutrition Basic Digestion...

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