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:: Volume 22, Issue 4 (2023) ::
IJFS 2023, 22 Back to browse issues page
Research Article: Effect of safflower (Carthamus tinctorius), beetroot (Beta vulgaris), and scarlet firethorn (Pyracantha coccinea) fruit on fillet and skin pigmentation of rainbow trout (Oncorhynchus mykiss)
S. Yousefi Siahkalroodi *1 , P. Mohebi Derakhsh2 , M. Yousefi Siahkalroodi3
1- Department of Biology, Faculty of Biological Sciences, Varamin-Pishva Branch, Islamic Azad University, Pishva, Iran. Email: siamakyousefi@iauvaramin.ac.ir , siamak.yousefi1@gmail.com
2- Iranian Fisheries Science Research Institute, Agriculture Research Education and Organization (AREEO), Tehran, Iran
3- Faculty of Veterinary Medicine, Science and Research Branch, Islamic Azad University, Tehran, Iran
Abstract:   (1225 Views)
Using beetroot, safflower, and scarlet firethorn with ten treatments, three replications, and 600 fish weighing roughly 230±10 gr that were established in a CRD experimental design for 45 days, this study evaluated the pigmentation of the fillet and skin of rainbow trout. Three groups underwent treatments in which dietary sources of plant pigment were given, while a control group did not receive any plant-based pigmentation additive. Five fish from each replication were randomly chosen and euthanized on day 45 of the experiment to evaluate the skin and fillet colors. Three criteria -L* (Brightness), a* (Redness), and b* (Yellowing) were used to evaluate the colorimetric indices after cutting a piece of fillet with skin on the lateral of the body and cooling it for 24 h. According to the findings, there was no significant difference between the experimental beetroot groups and skin color groups for fillets (p>0.05). However, the beetroot group of 10% had the highest percentage of the fillet and skin redness index, while the group without beets had the highest percentage of the yellowing and brightness index. The findings demonstrated that the addition of safflower improved skin discoloration compared to the control group (p<0.05). Scarlet firethorn was not significantly different in the experimental groups from the control (p>0.05). In conclusion, the supplementation of the rainbow trout diet with 10% safflower resulted in better fillet coloration.
Keywords: Pigmentation, Oncorhynchus mykiss, Carthamus tinctorius, Beta vulgaris, Pyracantha coccinea
Full-Text [PDF 676 kb]   (842 Downloads)    
Type of Study: Orginal research papers | Subject: Biology & physiology
ePublished: 2023/10/22
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Yousefi Siahkalroodi S, Mohebi Derakhsh P, Yousefi Siahkalroodi M. Research Article: Effect of safflower (Carthamus tinctorius), beetroot (Beta vulgaris), and scarlet firethorn (Pyracantha coccinea) fruit on fillet and skin pigmentation of rainbow trout (Oncorhynchus mykiss). IJFS 2023; 22 (4) :735-744
URL: http://jifro.ir/article-1-5377-en.html


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Volume 22, Issue 4 (2023) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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