Topics:
Animal Refresher, Poultry Science
Singing Time for Poultry Carcass Processing
The singing time for poultry (passing carcass over blue flame to burn hair-like appendages) is:
- 5–10 seconds over blue flame — Correct Answer
- 10–20 seconds over blue flame
- 20–25 seconds over blue flame
- 30–60 seconds over blue flame
Explanation:
Correct Answer: 5–10 seconds over blue flame
Singing is the process of passing the plucked poultry carcass over a blue flame for 5–10 seconds to burn off the tiny, hair-like feather appendages (filoplumes) that remain after de-feathering.
Singing vs. Scalding — Key Differences
| Process | Purpose | Method |
|---|---|---|
| Scalding | Loosen feathers for plucking | Immersion in hot water (58–60°C / 1 min) |
| Singing | Burn residual hair-like appendages | Blue flame, 5–10 seconds |
Why Blue Flame?
- A blue flame (complete combustion) is hotter and cleaner than a yellow/orange flame.
- It burns the fine filoplumes quickly without scorching the skin.
- 5–10 seconds is sufficient; longer exposure would burn or discolour the carcass skin.
Why Other Options Are Wrong
- 10–20 seconds → too long; risks burning and discolouring the skin.
- 20–25 seconds → excessively long; would damage the carcass.
📚 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.
