Explain how the ruminant stomach is suited to the digestion of plants in a grassland sward. - Leaving Cert Agricultural Science - Question c - 2017
Question c
Explain how the ruminant stomach is suited to the digestion of plants in a grassland sward.
Worked Solution & Example Answer:Explain how the ruminant stomach is suited to the digestion of plants in a grassland sward. - Leaving Cert Agricultural Science - Question c - 2017
Step 1
Rumen: Cellulose Digestion
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Answer
The ruminant stomach features the rumen, which contains a diverse population of microorganisms, including bacteria and protozoa, that are adept at breaking down cellulose. This process is crucial for digesting plant material, especially cellulose found in grasses.
Step 2
Reticulum: Regurgitation for Chewing the Cud
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The reticulum allows for the regurgitation of food, enabling the animal to re-chew and break down plant fibers further. This process, known as 'chewing the cud,' enhances the surface area for microbial digestion and improves nutrient absorption.
Step 3
Omasum: Water Removal
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The omasum plays a vital role in reabsorbing water from the digested material. This is essential for maintaining hydration and ensuring that nutrients are concentrated before further digestion.
Step 4
Abomasum: Completion of Digestion
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The abomasum is akin to the monogastric stomach and is responsible for the final stages of digestion. It secretes gastric juices that further breakdown food particles, allowing the absorption of nutrients effectively.
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