Cobalt is important in ruminant nutrition mainly because rumen microorganisms use it to form:
Correct answer: B. Vitamin B12
- A. Vitamin D3
- B. Vitamin B12
- C. Vitamin K2
- D. Folic acid
Explanation
Rumen microbes require cobalt for synthesis of vitamin B12, which supports propionate metabolism and other metabolic reactions. Vitamin D3 is produced in skin, while vitamins K and folate have different production pathways.
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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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