Topics:
Animal Physiology, Animal Refresher
Leucopenia (Neutropenia) Occurs in
Leucopenia (mainly neutropenia) condition occurs in:
- Bacterial disease
- Viral disease — Correct Answer
- Allergy
- Parasitic disease
Explanation:
Correct Answer: Viral disease
Leucopenia (decreased total WBC count), particularly neutropenia (decreased neutrophil count), is characteristically associated with viral diseases.
Why Viruses Cause Neutropenia/Leucopenia
- Many viruses directly infect and destroy leukocytes or bone marrow precursor cells.
- Viral infections also cause redistribution of leukocytes from circulation to tissues (margination).
- Examples: FMD (Foot and Mouth Disease), Rinderpest, Canine Distemper, Canine Parvovirus (severe leucopenia), Feline Panleukopenia, FIV (Feline Immunodeficiency Virus).
Leukocyte Changes in Various Conditions
- Viral disease: Leucopenia (mainly neutropenia/lymphopenia)
- Bacterial disease: Leucocytosis (mainly neutrophilia — increased neutrophils)
- Parasitic disease: Eosinophilia (increased eosinophils)
- Allergy: Eosinophilia
- Chronic infections (TB): Monocytosis (increased monocytes)
📚 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.
