Question:
The disease caused by iodine deficiency in animals is known as:
The disease caused by iodine deficiency in animals is known as:
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Goitre is the hallmark sign of iodine deficiency across almost all mammal species, including livestock and humans.
Updated On: Jul 8, 2026
- Picca
- Goitre
- Osteomalacia
- Denala
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Iodine is an essential trace element required solely for the synthesis of the thyroid hormones thyroxine (\(T_4\)) and triiodothyronine (\(T_3\)).
Step 3: Detailed Explanation:
Let us analyze the disease conditions:
1. Goitre: When dietary iodine intake is insufficient, thyroid hormone synthesis decreases. The pituitary gland detects this drop and releases high levels of Thyroid Stimulating Hormone (TSH). This constant stimulation causes hyperplasia and hypertrophy of the thyroid gland, leading to visible enlargement, known as goitre.
2. Picca (Pica): Characterized by depraved appetite (eating non-edible items), typically caused by phosphorus deficiency.
3. Osteomalacia: Softening of adult bones caused by Calcium, Phosphorus, or Vitamin D deficiency.
4. Denala (Dagnala): A gangrenous disease of the extremities in buffaloes and cattle, commonly associated with chronic selenium toxicity.
Thus, iodine deficiency directly causes goitre.
Step 4: Final Answer
The correct option is (B).
Iodine is an essential trace element required solely for the synthesis of the thyroid hormones thyroxine (\(T_4\)) and triiodothyronine (\(T_3\)).
Step 3: Detailed Explanation:
Let us analyze the disease conditions:
1. Goitre: When dietary iodine intake is insufficient, thyroid hormone synthesis decreases. The pituitary gland detects this drop and releases high levels of Thyroid Stimulating Hormone (TSH). This constant stimulation causes hyperplasia and hypertrophy of the thyroid gland, leading to visible enlargement, known as goitre.
2. Picca (Pica): Characterized by depraved appetite (eating non-edible items), typically caused by phosphorus deficiency.
3. Osteomalacia: Softening of adult bones caused by Calcium, Phosphorus, or Vitamin D deficiency.
4. Denala (Dagnala): A gangrenous disease of the extremities in buffaloes and cattle, commonly associated with chronic selenium toxicity.
Thus, iodine deficiency directly causes goitre.
Step 4: Final Answer
The correct option is (B).
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