Question:
Which of the following is not the correct combination?
Which of the following is not the correct combination?
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Remember these classic poultry nutritional deficiency signs:
- Riboflavin (B2) deficiency \(\rightarrow\) Curled toe paralysis.
- Manganese or Choline deficiency \(\rightarrow\) Perosis (Slipped tendon).
- Vitamin E deficiency \(\rightarrow\) Encephalomalacia Exudative diathesis.
- Riboflavin (B2) deficiency \(\rightarrow\) Curled toe paralysis.
- Manganese or Choline deficiency \(\rightarrow\) Perosis (Slipped tendon).
- Vitamin E deficiency \(\rightarrow\) Encephalomalacia Exudative diathesis.
Updated On: Jul 23, 2026
- Scaly limb- zinc
- Perosis-choline
- Curled toe paralysis- riboflavin
- Pullet disease- vitamin E
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Nutritional deficiencies in poultry lead to distinct pathological and clinical syndromes.
Identifying these specific nutrient-disease combinations is crucial for diagnosing and managing metabolic and nutritional disorders in avian medicine.
Step 2: Detailed Explanation:
Let us evaluate each of the listed combinations to identify which one is incorrect:
- Scaly limb - zinc (A): In growing chicks, zinc deficiency causes severe dermatitis, hyperkeratosis, and scaling of the skin, particularly on the limbs and feet. This is often referred to as "scaly limbs" or "scaly dermatitis," making this a correct combination.
- Perosis - choline (B): Perosis (slipped tendon) is a classic anatomical deformity in growing chicks characterized by enlargement of the hock joint, twisting of the metatarsus, and slipping of the gastrocnemius tendon from its condyles.
It is caused by deficiencies of manganese, choline, biotin, folic acid, or nicotinic acid.
Choline acts as a methyl donor required for the synthesis of phospholipids essential for cell membrane structure and bone matrix formation, making this a correct combination.
- Curled toe paralysis - riboflavin (C): Riboflavin (Vitamin B2) deficiency in chicks causes myelin sheath degeneration in the sciatic and brachial nerves.
This nerve damage leads to a characteristic inward curling of the toes, causing the chicks to walk on their hocks. This is a classic and correct combination.
- Pullet disease - vitamin E (D): Pullet disease (also known as avian monocytosis, bluecomb, or mud fever) is an acute, infectious, or metabolic disease of young laying hens characterized by dehydration, cyanosis of the comb, and monocytosis.
Its exact etiology is complex and associated with coronaviruses or heat stress, but it is not caused by a Vitamin E deficiency.
Vitamin E deficiency in poultry causes encephalomalacia (crazy chick disease), exudative diathesis, or nutritional muscular dystrophy.
Therefore, the combination "Pullet disease - vitamin E" is incorrect.
Step 3: Final Answer:
The correct option is (D).
Nutritional deficiencies in poultry lead to distinct pathological and clinical syndromes.
Identifying these specific nutrient-disease combinations is crucial for diagnosing and managing metabolic and nutritional disorders in avian medicine.
Step 2: Detailed Explanation:
Let us evaluate each of the listed combinations to identify which one is incorrect:
- Scaly limb - zinc (A): In growing chicks, zinc deficiency causes severe dermatitis, hyperkeratosis, and scaling of the skin, particularly on the limbs and feet. This is often referred to as "scaly limbs" or "scaly dermatitis," making this a correct combination.
- Perosis - choline (B): Perosis (slipped tendon) is a classic anatomical deformity in growing chicks characterized by enlargement of the hock joint, twisting of the metatarsus, and slipping of the gastrocnemius tendon from its condyles.
It is caused by deficiencies of manganese, choline, biotin, folic acid, or nicotinic acid.
Choline acts as a methyl donor required for the synthesis of phospholipids essential for cell membrane structure and bone matrix formation, making this a correct combination.
- Curled toe paralysis - riboflavin (C): Riboflavin (Vitamin B2) deficiency in chicks causes myelin sheath degeneration in the sciatic and brachial nerves.
This nerve damage leads to a characteristic inward curling of the toes, causing the chicks to walk on their hocks. This is a classic and correct combination.
- Pullet disease - vitamin E (D): Pullet disease (also known as avian monocytosis, bluecomb, or mud fever) is an acute, infectious, or metabolic disease of young laying hens characterized by dehydration, cyanosis of the comb, and monocytosis.
Its exact etiology is complex and associated with coronaviruses or heat stress, but it is not caused by a Vitamin E deficiency.
Vitamin E deficiency in poultry causes encephalomalacia (crazy chick disease), exudative diathesis, or nutritional muscular dystrophy.
Therefore, the combination "Pullet disease - vitamin E" is incorrect.
Step 3: Final Answer:
The correct option is (D).
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