A Newly Isolated Strain of Haematococcus pluvialis GXU-A23 Improves the Growth Performance, Antioxidant and Anti-Inflammatory Status, Metabolic Capacity and Mid-intestine Morphology of Juvenile Litopenaeus vannamei

can be used as a green additive in aquafeeds due to it contains rich astaxanthin and polyunsaturated fatty acid. In the present study, a newly strain of GXU-A23 with high concentration of astaxanthin was firstly isolated by a newly culture strategy in our laboratory. In addition, GXU-A23 was applied...

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Published inFrontiers in physiology Vol. 13; p. 882091
Main Authors Fang, HaoHang, Zhuang, ZhenXiao, Huang, LuoDong, Niu, Jin, Zhao, Wei
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 25.04.2022
Subjects
growth performance
Haematococcus pluvialis GXU-A23
hepatopancreas health
intestine morphology
Litopenaeus vannamei
metabolism
Physiology
growth performance
intestine morphology
hepatopancreas health
metabolism
Haematococcus pluvialis GXU-A23
Litopenaeus vannamei
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Summary:can be used as a green additive in aquafeeds due to it contains rich astaxanthin and polyunsaturated fatty acid. In the present study, a newly strain of GXU-A23 with high concentration of astaxanthin was firstly isolated by a newly culture strategy in our laboratory. In addition, GXU-A23 was applied in the feed for determining whether it has positive effects on the growth performance, antioxidant and anti-inflammatory status, metabolic capacity and mid-intestine morphology of juvenile . Shrimp with 0.63 g approximately initial body weight were fed diets supplemented with/without 50 g/kg GXU-A23. After 8 weeks feeding intervention, significantly higher growth performance of was obtained in the GXU-A23 treatment group compared to the control group ( < 0.05). At the same time, fed with GXU-A23 acquired significantly better antioxidant and anti-inflammatory status than the control group ( < 0.05). In addition, higher RNA expression level of hepatopancreas digestive enzyme, hepatopancreas lipid and glucose metabolic enzymes as well as better mid-intestine morphology were found in the GXU-A23 treatment group than the control group ( < 0.05). These results indicated that 50 g/kg GXU-A23 was suitable for the feed, which could improve the growth performance, antioxidant and anti-inflammatory status, metabolic capacity and mid-intestine morphology of juvenile
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This article was submitted to Aquatic Physiology, a section of the journal Frontiers in Physiology
Reviewed by: Muhammad Shahid Riaz Rajoka, Shenzhen University, China
Edited by: Benjamin Costas, University of Porto, Portugal
Francisco Javier Alarcón, University of Almeria, Spain
ISSN:1664-042X
1664-042X
DOI:10.3389/fphys.2022.882091