Title : Enhancing sustainable aquaculture performance using bacillus based biofloc inoculum
Abstract:
Achieving sustainable aquaculture requires innovative solutions that reduce water exchange, improve nutrient utilization, and support healthier aquatic organisms. Biofloc Technology (BFT) addresses these challenges by transforming nitrogenous wastes into beneficial microbial protein. This study investigates the use of Bacillus species as a specialized biofloc inoculum to accelerate floc development, stabilize microbial communities, and improve aquaculture productivity. Selected Bacillus isolates, characterized for strong bioflocculant activity and high tolerance to environmental fluctuations, were introduced into controlled culture systems. Water quality parameters including ammonia, nitrate, dissolved oxygen, pH, and turbidity were monitored over 120 hours. Inoculated systems demonstrated rapid floc aggregation, enhanced ammonia conversion rates, and more stable dissolved oxygen dynamics compared to non-inoculated controls. The structured microbial biomass also served as a nutrient-rich supplemental feed, positively contributing to growth performance and feed efficiency of cultured species. These results demonstrate that Bacillus-based biofloc inoculum provides a practical and eco-friendly pathway to improve aquaculture sustainability, particularly in regions where resource limitations restrict conventional practices. Continued optimization of microbial strain selection and inoculation strategies will further expand the contribution of biofloc systems to resilient food production.
Keywords: Biofloc, Bacillus, Water Parameter, sustainability, Aquaculture
