The cow has a ruminant stomach:
1 - Leaving Cert Agricultural Science - Question a) - 2015
Question a)
The cow has a ruminant stomach:
1. one other livestock species that has this type of stomach and
2. one livestock species that does not have this type of stomach.
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Worked Solution & Example Answer:The cow has a ruminant stomach:
1 - Leaving Cert Agricultural Science - Question a) - 2015
Step 1
1. one other livestock species that has this type of stomach and
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Answer
One other livestock species that has a ruminant stomach is the sheep.
Step 2
2. one livestock species that does not have this type of stomach.
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Answer
A livestock species that does not have a ruminant stomach is the pig.
Step 3
Name the chambers of the stomach labelled B, C and D.
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Answer
Chamber B is the Reticulum, Chamber C is the Omasum, and Chamber D is the Abomasum.
Step 4
Which chamber of the ruminant stomach most closely resembles the monogastric stomach?
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Answer
The chamber that most closely resembles the monogastric stomach is the Abomasum (D).
Step 5
Name the main constituent of grass that is digested in the ruminant stomach.
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Answer
The main constituent of grass that is digested in the ruminant stomach is cellulose or fibre.
Step 6
How does this benefit the animal?
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This benefits the animal by allowing for further mechanical digestion, which softens the food and increases the surface area for digestive enzymes.
Step 7
What happens to the food in chamber C?
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In chamber C, the food is squeezed or dried, and water is reabsorbed before moving on to the next chamber.
Step 8
Precisely which part of the digestive system does food enter when it leaves part D?
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When food leaves part D, it enters the duodenum (small intestine).
Step 9
Describe how the diet of the calf is changed over the first twelve weeks of life.
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Answer
The diet of the calf changes over the first twelve weeks from milk and milk replacers to include concentrates, meals, hay, silage, and grass, gradually increasing the variety of solid food.
Step 10
Bloat is a common disorder in cattle. What causes bloat?
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Bloat is caused by a buildup of gas in the rumen, often due to an inability to belch or the high clover content in the diet.
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