Topics:
Animal Physiology, Animal Refresher
Life Span of Erythrocytes in Chicken, Cat, and Cattle
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Question (English)
Life spans of chicken, cat, and cattle erythrocyte are respectively:
- 30 days, 70 days, 125–150 days ✓ Correct
- 70 days, 30 days, 100–120 days
- 10 days, 30 days, 70 days
- 30 days, 45 days, 70 days
Explanation:
Correct Answer: 30 days, 70 days, 125–150 days
The RBC life span varies across species. For chicken, cat, and cattle, the life spans are respectively: 30 days, 70 days, 125–150 days.
RBC Life Spans in Various Species
- Chicken (Fowl): ~28–35 days (shortest among listed species)
- Cat: ~70 days
- Cattle: ~125–150 days
- Sheep: ~70–150 days
- Horse: ~140–150 days
- Dog: ~110–120 days
- Human: ~120 days
- Goat: ~125 days
Why Avian RBCs Have Shorter Life Span
- Avian (bird) RBCs are nucleated and metabolically more active, which leads to faster aging and destruction.
- Birds also have higher metabolic rates and body temperatures, accelerating RBC turnover.
Site of RBC Destruction
- Old RBCs are destroyed by macrophages in the spleen (primary), liver, and bone marrow — a process called extravascular hemolysis.
📚 About this Topic — Animal Physiology
This multiple choice question is from Animal Physiology, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Physiology to strengthen your preparation.
