What is the principal purpose of administering a live attenuated vaccine to poultry?
Correct answer: D. To provide active immunity using a weakened organism
- A. To sterilize the poultry house environment
- B. To give immediate passive antibodies from another bird
- C. To replace all biosecurity measures on the farm
- D. To provide active immunity using a weakened organism
Explanation
A live attenuated vaccine stimulates the bird's own immune system while using an organism weakened in disease-producing ability. It does not provide passive antibodies and cannot substitute for sanitation and biosecurity.
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