Topics:
Animal Nutrition, Animal Refresher
Microflora of Rumen
Microflora of rumen contains:
- Bacteria — Correct Answer
- Fungi
- Protozoa
- All the above
Explanation:
Correct Answer: Bacteria
Microflora refers to microscopic organisms of plant/microbial kingdom — in the rumen context, this means Bacteria and Fungi. However, if only one option must be chosen from those listed, bacteria are the primary microflora component. Note: Protozoa are classified as microfauna, not microflora.
Rumen Microorganisms — Flora vs. Fauna Classification
| Category | Members | Population per ml |
|---|---|---|
| Microflora | Bacteria, Fungi, Bacteriophage | Bacteria: 10¹⁰⁻¹¹; Fungi: 10³; Bacteriophage: 10⁹ |
| Microfauna | Protozoa | 10⁶ |
Key Notes on Rumen Bacteria
- Majority: Gram (−)ve, obligate anaerobes
- Lactic acid bacteria: facultative anaerobes; attached to ruminal wall
- Optimal temperature: 39°C; normal rumen pH: 6.5–6.8
Why Other Options Are Wrong
- Fungi → also microflora, but the primary/dominant microflora component is bacteria
- Protozoa → classified as microfauna, not microflora
- All the above → incorrect because protozoa are microfauna, not microflora
📚 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.
