Topics:
Animal Nutrition, Animal Refresher
Trace Mineral in Rice
Rice is richest source of:
- Mn — Correct Answer
- Mg
- Mo
- Co
Explanation:
Correct Answer: Mn (Manganese)
Rice (specifically rice bran and polished rice) is the richest cereal grain source of Manganese (Mn). Manganese is a trace mineral essential for bone formation, reproduction, and carbohydrate metabolism.
Trace Mineral Content of Cereal Grains
| Cereal | Richest Trace Mineral | Notes |
|---|---|---|
| Rice (rice bran) | Manganese (Mn) | Highest Mn among cereals |
| Barley, Oats | β-glucans (anti-nutritional), Mn | — |
| Maize, Wheat bran | Niacin (bound form) | Niacin deficiency risk in pigs/poultry |
Manganese — Deficiency and Excess
- Deficiency → Perosis (Slipped tendon) in poultry — slippage of gastrocnemius tendon from its condyle.
- Also needed for: Mn-superoxide dismutase (antioxidant), pyruvate carboxylase, arginase.
- Metalloenzymes: Pyruvate carboxylase requires Mn as cofactor.
Why Other Options Are Wrong
- Mg (Magnesium) → rice contains Mg but is not particularly rich; Mg is abundant in green forages.
- Mo (Molybdenum) → rice is not a significant Mo source; Mo is found in legumes.
- Co (Cobalt) → Co deficiency causes "pine/wasting disease" in ruminants; not particularly associated with rice.
📚 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.
