Main Article Content
Abstract
Immunostimulants play a crucial role in activating nonspecific defense mechanisms that protect fish against pathogens and are valuable for controlling fish diseases. The aim of this study was to investigate the effects of Hypericum perforatum powder on immunological responses, biochemical parameters, hepatic enzymes levels, and resistance against Yeserina ruckeri in rainbow trout (Oncorhynchus mykiss). Fish with an average weight of 5±1g were fed a diet supplemented with a powder of H. perforatum at doses of 0 (control), 0.5% (H0.5%), 1% (H1%), 2% (H2%), and 4% (H4%) for 8 weeks. At the end of 8 weeks, fish were challenged with Y. ruckeri, and mortality was recorded for up to 10 days after the challenge. Immunological (lysozyme and alternative complement activity) and biochemical (glucose, total protein, albumin and globulin) parameters, and hepatic enzymes levels (LDH, AST, ALT and ALP) were measured before and after challenge. Result showed that supplementation with H. perforatum significantly increased serum lysozyme, complement activity, and albumin levels (P<0.05) and reduced glucose levels in the treatment groups (per-challenge and post-challenge) compared with the control (P<0.05). However, AST and LDH levels were significantly increased in the H2% and H4% groups compared with the control (P<0.05). After challenge, the highest survival rates were recorded in groups that received 0.5%, 1%, and 2% H. perforatum compared with the control (P<0.05). The Results of the present study demonstrated that feeding Oncorhynchus mykiss a diet containing H. perforatum powder at lower dose (0.5% and 1%) improved the immune status, and increased the survival rate and resistance to yersiniosis. Therefore, this plant can be used in aquaculture to improve fish health, reduce mortality, and increase production efficiency.
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The authors transfer the copyrights of their papers to the Iranian Society of Ichthyology. However, the information could be used in accordance with the Creative Commons licence (Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
References
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References
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AziziBasir, M.; Imani, A.; Sarvi Moghanloo, K. & Meshkini, S. 2020. The effect of Marjoram (Origanum vulgare L.) and St John's Wort (Hypericum perforatum) hydro-alcoholic extracts on growth, immunity, digestive and antioxidative enzymes activity of rainbow trout (Oncorhynchus mykiss) under the commercial farming condition. Journal of Fisheries 72(4): 339-351.
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Bricknell, I. & Dalmo, R.A. 2005. The use of immunostimulants in fish larval aquaculture. Fish Shellfish Immunol 19(5): 457-72.
Chatterjee, S.S.; Bhattacharya, S.K.; Wonnemann, M.; Singer, A. & Muller, W.E. 1998. Hyperforin as a possible antidepressant component of Hypericum extracts. Life Sciences 63(6): 499-510.
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Citarasu, T.; Sekar, R.R.; Babu, M.M. & Marian M.P. 2002. Developing Artemia enriched herbal diet for producing quality larvae in Penaeus monodon. Asian Fisheries Science 15(6): 21-32.
Citarasu, T.; Venket Ramalingam, K.; Raja Jeya Sekar, R.; Micheal Babu, M. & Marian, M.P. 2003. Influence of the antibacterial herbs, Solanum trilobatum, Andrographis paniculata and Psoralea corylifolia on the survival, growth and bacterial load of Penaeus monodon Post larvae. Aquaculture International 11(2): 583-595.
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Ellis, A.E. 1990. Lysozyme Assays. In: Stolen, J.S.; Fletcher, T.C.; Anderson, D.P.; Roberson, B.S. & Van Muiswinkel, W.B (eds.), Techniques in Fish Immunology (pp. 101-103). SOS Publications, Fair Haven, NJ.
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Farzollahi, L.; Sarvi Moghanlou, K. & Imani, A. 2019. Single and combined effects of Chicory (Cichorium intybus L.) and Hypericum perforatum extracts on immune indices and antioxidant enzymes activity of rainbow trout (Oncorhynchus mykiss). Iranian Scientific Fisheries Journal 28(1): 165-176.
Franklin, M.; Reed, A. & Murck, H. 2004. Sub-chronic treatment with an extract of Hypericum perforatum significantly reduces cartisol and corticosterone in the rat brain. European Neurop Syehapharmacol 14(1): 7-10.
Furones, M.D.; Rodgers, C.J. & Munn, C.B. 1993. Yersinia ruckeri, the causal agent of enteric redmouth disease (ERM) in fish. Annual Review of Fish Diseases 3(1): 105-125.
Gambarana, C.; Ghiglieri, O.; Tolu, P.; Montis, M.G.; Giachetti, D.; Bombardelli, E. & Tagliamonte, A. 1999. Efficacy of a Hypericum perforatum (St. John's Wort) extract in preventing and reverting a condition of escape deficit in rats. Neuropsycho Pharmacology 21(2): 247-57.
Haghighi, M. & Sharif Rohani, M. 2013. The effects of powdered ginger (Zingiber officinale) on the haematological and immunological parameters of rainbow trout Oncorhynchus mykiss. Journal of Medicinal Plant and Herbal Therapy Research 1(6): 8-12.
Heydari, M.; Firouzbakhsh, F. & Paknejad, H. 2020. Effects of Mentha longifolia extract on some blood and immune parameters, and disease resistance against yersiniosis in rainbow trout. Journal of Aquacultuer 515(2): 734586.
Hostanska, K.; Reichling, J.; Bommer, S.; Weber, M. & Reinhard, S 2003. Hyperforin a constituent of st John's wort (Hypericum perforatum) extract induces apoptosis by triggering activation of cases and with hypericin synergistically exerts cytotoxicity towards human malignant cell lines. European Journal of Pharmaceutics and Biopharmaceutics 56(1): 121-132.
Jiang, W.; Liu, Y.; Zheng, H.; Zheng, Y.; Xu, H. & Lu, H. 2012. Immune regulation of avian influenza vaccine in hens using Hypericum perforatum L. methanol extraction. Plant Omics Journal 5(1): 40-45.
Kumar Bairwa, M.; Kumar Jakhar, J.; Satyanarayana, Y. & Devivaraprasad Reddy, A. 2012. Animal and plant originated immunostimulants used in aquaculture. Journal of Natural product and plant resources 2(3): 397-400.
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Kumar, V.; Singh, P.N. & Bhattachacharya S.K. 2001b. Anti-inflammatory and analgesic activity of Indian Hypericum perforatum L. Indian. Journal Experimental Biology 39(4): 339-343.
Landi, N.; Qalamkari, G.; Moatar, F. 2010. Effectiveness of Hypericum perforatum on antioxidant activity of total blood serum and humoral immune responses in broilers. New veterinary research (Veterinary Pathobiology) 1(4): 18-27.
Magnadottir, B. 2006. Innate immunity of fish (overview). Fish & Shellfish Immunology 20(2): 137-151.
Mehrabi, Z. & Firouzbakhsh, F. 2020. Short-term effects of feeding powdered Aloe vera (Aloe barbadensis) and nettle (Urtica dioica) on growth performance and stimulation of innate immune responses in rainbow trout (Oncorhynchus mykiss). Comparative Clinical Pathology 29(2): 441–449.
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