Amelioration of hypoxia and cold stress in Nile tilapia: comparative effect of Chlorella vulgaris and its nanoparticle dietary supplementation on performance, antioxidant, hepatic functions, and meat quality

Nile tilapia, a widely cultivated freshwater fish, faces significant stressors, such as hypoxia and cold temperatures, which can negatively impact its quality and growth. The current study explored the impact of Chlorella vulgaris (CV) powder and its nanoparticles (CVNPs) on the growth performance,...

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Bibliographic Details
Published in:Aquaculture international 2025-02, Vol.33 (1), p.66-66, Article 66
Main Authors: Youssuf, Hadeer, Soror, Eman I., Shehab, Ahmed, El-daim, Amira M., Abo-Gamil, Zienab H., Ahmed-Farid, Omar, Hamad, Ahmed, Edris, Shimaa, Matter, Aya F.
Format: Article
Language:English
Subjects:
antioxidant activity
Antioxidants
ATP
Biological stress
Biomedical and Life Sciences
Chlorella vulgaris
cholesterol
Cold
cold stress
cortisol
dietary supplements
energy
Fatty acids
Feed conversion
Fingerlings
Fish
Food conversion
Freshwater
Freshwater & Marine Ecology
Freshwater fish
Freshwater fishes
growth performance
Growth rate
Hormones
Hypoxia
Inland water environment
Life Sciences
liver
Meat
Meat quality
muscles
Nanoparticles
Oreochromis niloticus
specific growth rate
Superoxide dismutase
Tilapia
Weight
weight gain
Whitefish
Zoology
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Summary:Nile tilapia, a widely cultivated freshwater fish, faces significant stressors, such as hypoxia and cold temperatures, which can negatively impact its quality and growth. The current study explored the impact of Chlorella vulgaris (CV) powder and its nanoparticles (CVNPs) on the growth performance, antioxidant capacity, liver protection, and meat quality of Nile tilapia to alleviate hypoxia and cold stress. A total of 450 healthy 28-day-old Nile tilapia fingerlings (average weight 5.32 ± 1.1 g, length 3.1 ± 0.5 cm) were divided into five groups: T1 (2.5 g/kg CV), T2 (5 g/kg CV), T3 (2.5 g/kg CVNP), T4 (5 g/kg CVNP), and the control group received a basal diet without additives, each with three subgroups in tri-replicate (10 fish/replicate). After six weeks of feeding, growth metrics and meat quality parameters were assessed, and each group was subjected to hypoxia, cold stress, or optimal conditions. The results revealed that T4 exhibited the highest weight gain (WG) and lowest feed conversion ratio (FCR), whereas T1 showed the highest specific growth rate (SGR) and length gain. Hypoxia and cold stress significantly ( p  
ISSN:0967-6120
1573-143X
DOI:10.1007/s10499-024-01739-2