TY - JOUR T1 - Investigation of the effect of a commercial probiotic-based product containing enzymes on rainbow trout (Oncorhynchus mykiss) AU - Akaylı, Tülay PY - 2025 DA - October Y2 - 2025 DO - 10.3153/AR25028 JF - Aquatic Research JO - Aquat Res PB - Nuray ERKAN ÖZDEN WT - DergiPark SN - 2618-6365 SP - 286 EP - 294 VL - 8 IS - 4 LA - en AB - In this study, the aim was to test the effect of a candidate biotechnological product developed by a commercial company and containing different probiotic bacteria and enzymes on juvenile rainbow trout (O. mykiss) and water quality. The product's protective effect against fungal infections in fish eggs and the pathogen Aeromonas hydrophila was also investigated, as were its effects on the fish's intestinal tissue. Fifty fish were placed in aquariums in two experimental setups (A and B). Different doses of the product were added to the feed in Group A and water for the fish in Group B. Four different bath doses (d1-d4) of the product were applied to fish in Group B. At the end of the study, fish in Group A demonstrated better health, growth, feed conversion, and survival rates, as well as water quality, compared to the other groups. The product was found to be effective in improving the fish's intestinal health, reducing fungal infections in their eggs, and preventing infection by A. hydrophila. The data obtained from this study aims to contribute to the development of our country's aquaculture sector. KW - Rainbow Trout KW - O.mykiss KW - Probiotic KW - Egg KW - Aeromonas hydrophila CR - Amenyogbe, E., Droepenu, E.K., Ayisi, C.L., Boamah, G.A., Duker, R.Q., Emmanuel Delwin Abarike, E.D., & Huang, J.S. (2024). Impact of probiotics, prebiotics, and synbiotics on digestive enzymes, oxidative stress, and antioxidant defense in fish farming: current insights and future perspectives. 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UR - https://doi.org/10.3153/AR25028 L1 - https://dergipark.org.tr/en/download/article-file/5209962 ER -