Topics:
Animal Refresher, Poultry Science
Inorganic and Organic Matter in Eggshell
Contribution of inorganic & organic matter in egg shell should be respectively:
- 96% & 4% — Correct Answer
- 90% & 10%
- 80% & 20%
- None of these
Explanation:
Correct Answer: 96% & 4%
Eggshell is composed of 96% inorganic matter and 4% organic matter.
Eggshell Composition Breakdown
- Inorganic matter (96%):
- Calcium carbonate (CaCO₃): 94%
- Magnesium carbonate (MgCO₃): 1%
- Calcium phosphate (CaHPO₄): 1%
- Organic matter (4%): Mainly protein matrix (osteopontin, ovocleidin)
This high inorganic content makes eggshell essentially a calcium carbonate crystal structure, which is why calcium deficiency directly results in soft or thin-shelled eggs. Shell strength is directly proportional to shell thickness (measured by screw gauge).
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This multiple choice question is from Animal Refresher, Poultry Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
