Effect of Nannochloropsis oculata and Isochrysis galbana on growth, water quality, biofloc, carcass fatty acids profile, and intestinal bacteria in Nile tilapia (Oreochromis niloticus) raised in zero-water exchange system
In this study, the effects of various algal resources on water quality, growth performance, body fatty acid composition, and intestinal bacteria of Nile tilapia were studied under a zero-water exchange biofloc system. Oreochromis niloticus with an initial mean weight of 2.73±0.27 g, was cultured in five experimental tanks (150 L) including the control group (T1), biofloc group (T2), biofloc+ N. oculata group (T3), biofloc+ I. galbana group (T4), and biofloc+algal (T5) for 60 days. A total number of 225 O. niloticus was used for this study (15 individuals in each replication). The results showed the highest total ammonia nitrogen (4.54±0.05 mg L-1) in the biofloc treatment (p<0.05). There were significant differences in the growth performance among the control group with other treatments (p<0.05). In terms of fillet quality, the highest amount of saturated fatty acids (39.79±0.25%) was found in the biofloc group. The highest monounsaturated fatty acids (41.87±0.99) and polyunsaturated fatty acids (33.25±0.93%) were obtained in the biofloc+algal treatment (p<0.05). All intestinal bacteria in the biofloc group were higher than the control group (P<0.05). The current study demonstrated that biofloc could promote the growth performance of unsaturated fatty acids in the fish fillet.
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Histopathological alterations in liver tissue of the Common carp (Cyprinus carpio) juvenile while exposure to polyethylene microplastic particles (HDPE)
Mostafa Alishiri, Kamran Rezaei Tavabe *, , Gholamreza Rafiee, Alireza Mirvaghefi
Journal of Fisheries, -
Effect of fishmeal replacement with silk worm (Bombyx mori) pupa meal on growth, hematological, and biochemical parameters of fingerling beluga Sturgeon (Huso huso)
T. Bagheri*, Roghieh Safari, Mahmood Bahmani, Mahmood Hafezieh, Eisa Sharifpour, Abbasali Agahei Moghaddam, Taher Poursoufi, Esmaeil Paghe, Seyed Amin Mirhashami Rostami, Zabihollhah Pajand, Reza Safari, Matin Shakoori, Seyed Reza Khaleghi, Abdolsalam Hatami, Habibollah Sanchooli, Reza Sourati, Rahim Abdollahi Me
Iranian Scientific Fisheries Journal,