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Volume 12, Issue 1 (Spring 2024) |
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Effects of Feeding Pure Olive Leaf Polyphenols on Growth Indices, Non-Specific Immunity, Blood Parameters, and Antioxidant Activity in Rainbow Trout Fry
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Rudabeh Rufchaie *   , Seyed Hoseinifar , Roghie Safari , Mohamad Syad Borani , Shiva Nedaei , Omid Imani Tamali |
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Abstract: (721 Views) |
The aim of this research is to investigate the effects of different levels of olive leaf polyphenol (POL) on salmon. The rainbow is Oncorhynchus mykiss. Number of 120 pieces of fish with an average weight of 6.5 ± 0.1 grams were randomly divided into four treatments with three replications in 100 liter storage tanks and with four diets containing zero, 0.5, 1 and 2 grams (POL) per kilogram. The food was fed for 8 weeks. At the end of the period, growth factors, non-specific immune indices of mucus and serum and the relative expression of immune genes were investigated. Investigation of serum safety indicators, blood sampling from the caudal stem of the treatments was done completely randomly. To measure mucus safety indicators, sampling and collection of mucus from all treatments was done completely randomly. Relative expression of immune genes was investigated from sampled intestinal tissues. The obtained results showed the improvement of growth indices in fish fed with three different levels (POL). In terms of non-specific immunity, the results showed an increase in total serum and mucus immunoglobulin in the groups fed with a diet containing 1, 2 g/kg (POL) (P<0.05). The amount of lysozyme activity of total serum and mucus was also affected by (POL) and fish fed with 1 and 2 grams of (POL) showed a significant increase (P<0.05). The relative expression of the immune gene was also affected by feeding with the above supplement in the mentioned treatments (P<0.05). The highest relative expression of the interleukin gene was obtained in the treatment of 2 g/kg and tumor necrosis factor in the treatment of 1 g/kg (POL). Consumption of 2 g/kg olive leaf polyphenol supplement can have a favorable effect on the growth and rearing quality of trout fry.
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| Keywords: Polyphenol Olive leaf, Rainbow trout, non-specific immune system, relative gene expression |
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Full-Text [PDF 873 kb]
(114 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2024/06/1 | Accepted: 2024/07/10 | Published: 2024/09/25
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Rufchaie R, Hoseinifar S, Safari R, Syad Borani M, Nedaei S, Imani Tamali O. Effects of Feeding Pure Olive Leaf Polyphenols on Growth Indices, Non-Specific Immunity, Blood Parameters, and Antioxidant Activity in Rainbow Trout Fry. JAIR 2024; 12 (1) :51-60 URL: http://jair.gonbad.ac.ir/article-1-891-en.html
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