Topics:
Animal Nutrition, Animal Refresher
Optimum Rumen Ammonia Concentration
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Question (English)
The optimum concentration of rumen NH₃ (ammonia) is:
- 10–15 mg/dl
- 15–20 mg/dl
- 5–8 mg/dl ✓ Correct
- 20–30 mg/dl
Explanation:
Correct Answer: 5–8 mg/dl
Optimum rumen NH₃ for maximum microbial protein synthesis = 5–8 mg/dl.
NH₃ Thresholds
- < 5 mg/dl: Bacterial growth limited by N deficiency
- 5–8 mg/dl: Optimum — bacteria utilise NH₃ efficiently
- > 5–8 mg/dl: Excess NH₃; urea supplementation not beneficial
- > 80 mg/dl: Urea toxicity threshold in rumen
- Blood NH₃ > 1 mg/dl: Systemic toxicity
📚 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.
