9
Most probiotics proposed as biological control agents in aquaculture belong to which of the following group?
EXPLANATION
Functional Feeds, Probiotics, Prebiotics, Syn
- Microbial Probiotics in Aquaculture:
- Probiotics are live microbial dietary supplements that beneficially affect the host by improving its intestinal microbial balance, enhancing nutrient utilization, and inhibiting pathogenic bacteria through competitive exclusion and bacteriocin production.
- Lactic Acid Bacteria (LAB), predominantly members of the genus Lactobacillus (e.g., Lactobacillus plantarum, L. acidophilus, L. rhamnosus) and Bacillus species, constitute the most widely researched and commercialized groups.
- nalysis:
- (Lactobacillus): Correct.
- (Escherichia coli): Coliform indicator, potential enteric pathogen.
- (Nitrobacter): Nitrifying autotrophic bacterium in biofilters, not an intestinal gut probiotic.
- (Aspergillus): Fungal genus, potential mycotoxin producer.
Correct option: (4) Lactobacillus
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