Dietary flaxseed (Linum usitatissimum) oil supplementation affects growth, oxidative stress, immune response, and diseases resistance in rainbow trout (Oncorhynchusmykiss)

This paper describes the effects of flaxseed (Linum usitatissimum) oil (FSO) as a feed additive on growth performance, oxidative stress, immunity, and disease resistance in rainbow trout (Oncorhynchus mykiss). Eight-hundred-and-forty rainbow trout individuals (mean weight: 25.66 ± 1.33 g) were fed w...

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Bibliographic Details
Published in:Fish & shellfish immunology 2023-07, Vol.138, p.108798-108798, Article 108798
Main Authors: Salem, Mohamed Omar Abdalla, Taştan, Yiğit, Bilen, Soner, Terzi, Ertugrul, Sönmez, Adem Yavuz
Format: Article
Language:English
Subjects:
Aeromonas hydrophila
Animal Feed - analysis
Animals
antioxidant enzymes
Antioxidants - metabolism
blood
catalase
cytokines
Cytokines - metabolism
Diet - veterinary
Dietary Supplements
digestive enzymes
Disease Resistance
Feed additive
feed additives
Fish Diseases
Flax - metabolism
gene expression
growth performance
Growth promoter
health status
histology
immune response
Immunostimulant
innate immunity
intestines
kidneys
linseed
Linum usitatissimum
lipid peroxidation
lysozyme
myeloperoxidase
Natural product
oils
Oncorhynchus mykiss
Oxidative Stress
Plant oil
shellfish
specific growth rate
superoxide dismutase
Yersinia ruckeri
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Summary:This paper describes the effects of flaxseed (Linum usitatissimum) oil (FSO) as a feed additive on growth performance, oxidative stress, immunity, and disease resistance in rainbow trout (Oncorhynchus mykiss). Eight-hundred-and-forty rainbow trout individuals (mean weight: 25.66 ± 1.33 g) were fed with different doses of FSO (0.5, 1, and 1.5%) ad libitum two times a day for 9 weeks. At the end of the feeding, growth performance was evaluated and the fish were challenged with two different bacteria (Yersinia ruckeri and Aeromonas hydrophila). At the end of the 3rd, 6th, and 9th weeks, blood and tissue samples were taken from 9 fish per treatment to evaluate innate immune response, cytokine gene expression levels, antioxidant enzyme activities and lipid peroxidation levels, and digestive enzyme activities. Determination of haematological parameters and histological examination was also carried out to evaluate the general health status of the fish. Results showed that the final weight and specific growth rate of FSO-supplemented fish increased significantly (p 
ISSN:1050-4648
1095-9947
DOI:10.1016/j.fsi.2023.108798