Topics:
Animal Refresher, Meat Science
Main Function of CO2 in Gas Stunning
The main function of CO₂ in gas stunning is:
- It blocks the nerve endings — Correct Answer
- It causes hemorrhage of subcutaneous tissue
- It causes blackening of subcutaneous tissue
- It denatures muscle proteins
Explanation:
Correct Answer: It blocks the nerve endings
The main function of CO₂ in gas stunning is that it blocks the nerve endings in the brain, rendering the animal unconscious without pain or distress. This is why it is considered an effective and humane method for pigs.
Gas Stunning Protocol
- Gas mixture: 70% CO₂ + 30% O₂
- Duration: 45 seconds
- Best suited for: Pigs
- Commercial method for pig stunning: CO₂ gas stunning
CO₂ Does NOT Cause:
- Hemorrhage of subcutaneous tissue — that is caused by too high electrical current (Splash).
- Blackening of subcutaneous tissue — no such effect is associated with CO₂.
- Denaturation of proteins — CO₂ is not a protein-denaturing agent in this context.
Comparison with Electrical Stunning
- Electrical: AC 250 mA, 75 V, 10 sec → nerve disruption by electricity.
- CO₂: 70% CO₂, 45 sec → chemical blockage of nerve endings.
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Meat Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
