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Questions and Answers
What percentage of the cost of producing poultry meat is accounted for by food?
What percentage of the cost of producing poultry meat is accounted for by food?
- Around 40%
- Less than 60%
- Exactly 60%
- Over 70% (correct)
What kind of animals are poultry, pigs, and humans in terms of their digestive systems?
What kind of animals are poultry, pigs, and humans in terms of their digestive systems?
- Single-stomached (non-ruminant) (correct)
- Multi-stomached (ruminant)
- No stomach
- Dual-stomached
How does food get absorbed into the bloodstream in the digestive tract of poultry?
How does food get absorbed into the bloodstream in the digestive tract of poultry?
- Through the villi of the gut wall (correct)
- Through the esophagus
- Through the gizzard
- Through the beak
Why have evolutionary pressures kept the weight of the digestive tracts of poultry to a minimum compared to their body weights?
Why have evolutionary pressures kept the weight of the digestive tracts of poultry to a minimum compared to their body weights?
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How does the speed of food passage through the digestive tract of poultry compare to other non-ruminant species?
How does the speed of food passage through the digestive tract of poultry compare to other non-ruminant species?
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Study Notes
Poultry Production Costs
- Food accounts for a significant percentage of the cost of producing poultry meat, approximately 60-70%.
Digestive Systems
- Poultry, pigs, and humans are monogastric animals, meaning they have a single-chambered stomach.
Digestion and Absorption
- In the digestive tract of poultry, food is broken down into nutrients, which are then absorbed into the bloodstream through finger-like projections called villi.
Evolutionary Pressures
- Evolutionary pressures have led to the minimization of digestive tract weight in poultry compared to their body weights, as excess energy would be wasted on digestive processes instead of growth and reproduction.
Digestive Tract Function
- The speed of food passage through the digestive tract of poultry is relatively rapid compared to other non-ruminant species, allowing for efficient nutrient uptake and minimizing the energy expenditure on digestion.
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