Topics:
Animal Nutrition, Animal Refresher
Chemical Agents Used for Defaunation
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Question (English)
Which chemical agent(s) are used for defaunation (selective removal of protozoa from rumen)?
- Copper sulphate only
- Sodium lauryl sulphate only
- Both copper sulphate and sodium lauryl sulphate ✓ Correct
- Sodium bicarbonate
Explanation:
Correct Answer: Both copper sulphate and sodium lauryl sulphate
- Copper sulphate (CuSO₄): Classic ciliostatic agent. Caution: repeated use causes Cu toxicity (sheep are most susceptible).
- Sodium lauryl sulphate: A detergent that disrupts protozoan cell membranes without major harm to bacteria.
Important Note
Ionophores (Monensin, Lasalocid) are NOT defaunating agents — they alter VFA profiles (increase propionate, decrease acetate) and reduce methane, but do not selectively remove protozoa.
📚 About this Topic — Animal Nutrition
This multiple choice question is from Animal Nutrition, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Nutrition to strengthen your preparation.
