Topics:
Animal Nutrition, Animal Refresher
Chemical Agents for Defaunation
Chemical agents used for defaunation include:
- Copper sulphate
- Sodium lauryl sulphate
- Both a & b — Correct Answer
- None
Explanation:
Correct Answer: Both a & b
Both Copper sulphate and Sodium lauryl sulphate are used as chemical agents for defaunation — the selective removal of protozoa from the rumen.
Defaunation Agents
| Agent | Type | Mechanism |
|---|---|---|
| Copper sulphate (CuSO₄) | Chemical | Toxic to protozoa at higher concentrations |
| Sodium lauryl sulphate | Chemical (detergent) | Disrupts protozoa cell membranes |
Rumen Protozoa — Key Notes
- Majority of ruminal protozoa are ciliate protozoa
- Protozoa determine ruminal microbial population by preying on bacteria
- Protozoa also engulf starch granules → reduce acid load from rapid starch fermentation
- Defaunation increases bacterial protein available to the host
Why Other Options Are Wrong
- Copper sulphate alone → correct, but incomplete; sodium lauryl sulphate also works
- Sodium lauryl sulphate alone → correct, but incomplete; copper sulphate also works
- None → incorrect; both are established chemical defaunation agents
📚 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.
