8.EVOLUTION OF PRIMATE DIGESTIVE SYSTEM

8.EVOLUTION OF PRIMATE DIGESTIVE SYSTEM - 10/14/09...

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10/14/09 1 Evolution of the Omnivorous Digestive System Overview: 1. Digestive Strategies of Herbivores 2. Digestive Strategies of Omnivores: Primates 3. Primate Taxonomy by Dietary Preference 4. Why Primates Search for Animal Food 5. Overview 2. Omnivore Digestive System: Humans 1 . Digestive Strategies of Herbivores: GI Tract Adaptations A . Hindgut B. foregut: ruminant
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10/14/09 2 1 . Digestive Strategies of Herbivores: GI Tract Adaptations Hindgut fermenter Ruminant Foregut fermenter: ruminant Food chewed several times. Rate of Passage: 80 hrs Cellulose Utilization: 60% BIOCHEMICAL PROCESS OF DIGESTION IN RUMINANTS
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10/14/09 3 Hindgut fermenter Stomach Colon Cecum Small intestine Food chewed once Rate of passage: 48 hrs Cellulose utilization: 45% 2. Digestive Strategies of Omnivores: Primates A. Sacculated Stomach B. Enlargement of the Colon C. Enlargement of the Small Intestine D. Reduction of the Small Intestine? Dietary Pattern and Size of the Colon in New World Monkeys (1) folivores Colobus: Leaf eater
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10/14/09 4 Adaptation of the Digestive System in Old World Monkeys: Uses cellulose for energy Compartmentalized, sacculated stomach in Colobus monkeys faciliates the fermentation and break down of cellulose and detoxifies substances produced by gut bacteria. In Vervet monke y break down cellulose continues in the large intestine. Enlargement of Small and Large Intestine in New
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8.EVOLUTION OF PRIMATE DIGESTIVE SYSTEM - 10/14/09...

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