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Effect of saffron (Crocus Sativus) petal powder on growth performance and some epidermal mucus immune parameters in rainbow trout (Oncorhynchus mykiss)
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Maryam Tala *   , Sajjad Pormozaffar |
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Abstract: (516 Views) |
The aim of this study was to investigate the potential of using saffron petal powder on the growth performance and innate immune parameters of the skin mucus of rainbow trout. For this purpose, 600 rainbow trout juvenile (6.6 ± 0.19 g) were randomly divided into four experimental groups and fed with diets containing 0, 0.5, 1 and 2% raw powder of saffron petals for 8 weeks. The results showed that feeding juvenile with a diet containing 0.5% saffron petal powder led to a significant improvement in growth indicators including gain weight, specific growth rate and factor condition compared to the control group. The results showed that the juvenile fed with a diet containing 0.5% saffron petal powder led to a significant improvement in growth indicators incliding weight gain, specific growth rate and condition factore feed conversion ratio compared to the control group, while, higher concentrations (1.5 and 2%) had no significant effect on the growth performance. The analysis of the innate immune parameters of the skin mucus also showed lysozyme enzyme had a dose-dependent increase, so that its highest level was observed in the treatments fed with ration containing 2% saffron petal powder. The analysis of the innate immune parameters of the skin mucus also showed that the lysozyme enzyme had a dose-dependent increase, so that its highest level was observed in the treatments fed with a diet containing 2% saffron petal powder. Also, the highest level of hemagglutination activity and antibacterial activity against two common pathogenic bacteria in aquaculture, including Yersinia rookeri and Aeromonas hydrophila, was related to the treatment fed with a diet containing 2% saffron petal powder. Therefore, saffron petal powder, especially at a concentration of 0.5%, has the potential to be used as a growth and immune stimulant with natural origin, cost-effective, efficient, and eco-friendly immunostimulant in rainbow trout farms to improve the level of aquatic health and increase resistance to common bacterial infections, including enteric redmouth disease and bacterial hemorrhagic septicemia.
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Article number: 7 |
| Keywords: immune, growth, rainbow trout, saffron petals, mucus |
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Full-Text [PDF 1177 kb]
(142 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2023/08/27 | Accepted: 2023/10/11 | Published: 2023/12/17
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