Topics:
Animal Physiology, Animal Refresher
Normal Rumen Bacterial Population
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Question (English)
Normal population of rumen bacteria per ml of rumen liquor is:
- 10³
- 10⁶
- 10¹⁰ ✓ Correct
- 10¹⁵
Explanation:
Correct Answer: 10¹⁰
The normal population of rumen bacteria is 10¹⁰–10¹¹ per ml of rumen liquor, making bacteria the most numerous microorganism in the rumen.
Complete Rumen Microbial Population
| Microorganism | Population per ml rumen liquor |
|---|---|
| Bacteria | 10¹⁰–10¹¹ (highest) |
| Bacteriophage | 10⁹ |
| Protozoa | 10⁶ |
| Fungi | 10³ (lowest) |
Defaunation
- Defaunation: Selective removal of protozoa from the rumen ecosystem.
- Chemical defaunation agents: Copper sulfate and Sodium lauryl sulfate.
- Despite being fewer in number, protozoa determine the ruminal microbial population because protozoa engulf and eat bacteria.
📚 About this Topic — Animal Physiology
This multiple choice question is from Animal Physiology, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Physiology to strengthen your preparation.
