00000ctm a22000003a 4500 UP-8027390931314087163 Buklod 20260218115405.0 m |o d | ta 211129s2021 xx d r |||| u| (iLib)UPVIS-00106642960 upv-gl LG 995 2021 A7 A43 Albances, Jason Orendez Effects of probiotic isolated from saline tilapia green water against Aeromonas hydrophila infection on juvenile tilapia (Oreochromis niloticus) Jason Orendez Albances. Miagao, Iloilo University of the Philippines Visayas 2021. 64 leaves. Thesis (MS Aquaculture) -- Miagao, Iloilo : University of the Philippines Visayas, August 2021. Aeromonas hydrophila is a major pathogen associated with serious production losses in the culture of Oreochromis niloticus. The present study was conducted to find potential probiotics from tilapia-green water that could prevent A. hydrophila infection in juvenile tilapia. Several presumptive bacterial probionts were isolated and tested against. A. hydrophila for antagonism and pathogenicity to the host fish. The isolated probiotics and prevention of infection on a pathogen challenge test. Results showed that out of eight isolates tested, Staphylococcus aureus showed the best anagonisticactivity against the pathogen and this was used in the subsequent experiments. No mortalities or disease signs were fond in juvenile tilapia after a 30-day pathogen challenge test with the isolated probiotic, S. aureus. Dietary supplementation level at 10 6 cfu/ml S. aureus prevented mortalities caused A. hydrophila infection. The application of 10 6 cfu/ml S. aureus is considered a practical approach to prevent A. hydrophila infection in the rearing of juvenile tilapia. UPVIS UPV-CFOS LG 995 2021 A7 A43 UPVIS UPV-GL LG 995 2021 A7 A43 Thesis