Topics: Animal Refresher, Poultry Science

Haugh Unit Range for Standard Chicken Egg

Range of Haugh unit for a standard chicken egg should be:

40–60
65–80
80–90
50–70

Haugh Unit Range for Standard Chicken Egg

Range of Haugh unit for a standard chicken egg should be:

Options

40–60
65–80 ✓
80–90
50–70

Correct Answer: B

Explanation in English

Correct Answer: 65–80

The Haugh unit of a standard chicken egg ranges from 65 to 80 (some sources cite 65–85, with the standard value being 72). It is the primary measure of albumin (egg white) quality.

What is Haugh Unit?

Haugh unit measures the height of the thick albumin relative to the egg weight.
Higher Haugh unit = better, fresher egg quality (thicker, firmer albumen).
As eggs age, the albumin thins due to enzymatic breakdown of ovomucin, and the Haugh unit falls.
Standard chicken egg Haugh unit: 72 (range 65–85).

Egg Quality Measures

Parameter	What It Measures	Standard Value
Haugh unit	Height of albumin (albumin quality)	72 (range 65–85)
Yolk index	Spherical nature of yolk (yolk quality)	0.50 (range 0.40–0.50)
Egg Shape Index (ESI)	Shape of egg (width/length × 100)	74 (for chicken)
Shell thickness	Shell strength	0.30–0.50 mm

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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.

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