The bacteria Micrococcus luteus via feed improves resistance against:

Correct option is B

Correct Answer: (b) Edwardsiellosis
Explanation:
→ Dietary supplementation of Micrococcus luteus boosts immunity and improves resistance to Edwardsiellosis caused by Edwardsiella tarda.
→ It enhances phagocytic activity and serum lysozyme levels in fish.
Information Booster:
→ Beneficial for catfish and tilapia culture systems.
Additional Information:
(a), (c), (d): Not the primary diseases targeted by M. luteus.