The rumen pH range that generally supports active fibre digestion is approximately:
Correct answer: C. 6.0 to 7.0
- A. 3.0 to 4.0
- B. 4.5 to 5.5
- C. 6.0 to 7.0
- D. 8.0 to 9.0
Explanation
Cellulolytic rumen microbes function best in a mildly acidic to near neutral environment, usually around pH 6.0 to 7.0. Very low pH suppresses fibre digesters and favours acid producing organisms.
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About Animal Nutrition and Feeding
Covers carbohydrates, proteins, lipids, minerals, vitamins and water, along with digestion, absorption and energy metabolism in domestic animals. Questions involve feed evaluation, nutrient requirements, ration formulation, forage and concentrate feeds, deficiency disorders, and the differences between ruminant and monogastric nutrition.
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