Topics:
Animal Refresher, Poultry Science
Method to Determine Specific Gravity of Egg
The specific gravity of an egg is determined by:
- Brine floatation technique — Correct Answer
- Vernier caliper
- Screw gauge
- Haugh unit meter
Explanation:
Correct Answer: Brine floatation technique
The specific gravity of an egg is determined by the Brine flotation technique. The egg is placed in solutions of salt (brine) of known specific gravity; the specific gravity at which the egg just floats indicates its own specific gravity.
Specific Gravity of Standard Egg
- Specific gravity range of fresh egg: 1.060–1.090
- Higher specific gravity = thicker shell = better egg quality.
- As an egg ages, specific gravity decreases (air cell enlarges, moisture and CO₂ are lost).
Summary of Egg Quality Measurement Tools
| Parameter | Measurement Tool |
|---|---|
| Albumin quality (Haugh unit) | Haugh unit meter (measures albumin height) |
| Yolk quality (Yolk index) | Yolk height / Yolk width ratio |
| Egg shape index (ESI) | Vernier caliper |
| Shell strength / thickness | Screw gauge |
| Specific gravity | Brine flotation technique |
Why Other Options Are Wrong
- Vernier caliper → used for egg shape index (ESI), not specific gravity.
- Screw gauge → used for shell thickness/strength, not specific gravity.
📚 About this Topic — Animal Refresher
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.
