Arginine supplementation in plant-rich diets affects growth, feed utilization, body composition, blood biochemical indices and gene expressions of the TOR signaling pathway in juvenile Asian red-tailed catfish (Hemibagrus wyckoiides)

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dc.contributor.authorDahai Gu
dc.contributor.authorJingying Zhao
dc.contributor.authorSamwel Mchele Limbu
dc.contributor.authorYunan Liang
dc.contributor.authorJunming Deng
dc.contributor.authorBaoliang Bi
dc.contributor.authorLingfu Kong
dc.contributor.authorHui Yan
dc.contributor.authorXiaowen Wang
dc.contributor.authorQing Hu
dc.contributor.authorYu Gao
dc.contributor.authorDan Jia
dc.contributor.authorHua Rong
dc.date.accessioned2022-08-05T15:58:08Z
dc.date.available2022-08-05T15:58:08Z
dc.date.issued2022-02
dc.description.abstractArginine (Arg) is an important essential amino acid required for optimum fish growth. However, its role in plant-rich diets on growth and the required level in juvenile Hemibagrus wyckioides are currently unknown. This study evaluated the effects of Arg supplementation in plant-rich diets on growth, feed utilization, whole body composition, blood biochemical indicators and gene expressions of the target of rapamycin (TOR) signaling pathway in juvenile H. wyckioides. A total of 450 fish (6.40 ± 0.06 g) were randomized into six equal groups and fed on diets with graded Arg levels: 0 (control), 3, 6, 9, 12 and 15 g/kg of dry feed for eight weeks. The results revealed that specific growth rate (SGR) and feed conversion ratio of juvenile H. wyckioides were significantly improved and reduced, respectively in fish fed on 9 g/kg of Arg supplementation (p < .05). The optimum amount of dietary Arg content in plant-rich diets for H. wyckioides was 63.77 g/kg diet based on SGR. Feeding fish with dietary Arg supplementation ranging from 9 to 12 g/kg improved significantly (p < .05) whole body protein contents and decreased lipid deposition. The mRNA levels of TOR, eukaryotic translation initiation factor 4E (4EBP) and ribosomal protein S6 kinase 1 (S6K1) in muscle and liver were significantly affected by increasing dietary Arg levels. Meanwhile, the mRNA relative expression levels of TOR and S6K1 in the liver and muscle increased significantly as Arg supplementation increased. On the other hand, the mRNA relative expression levels of 4EBP was significantly higher in fish fed on the 9 g/kg Arg diet compared to those fed on the control and 15 g/kg Arg diets. In conclusion, our current results indicate that dietary Arg supplementation in plant-rich diets, might activate the TOR signaling pathway, which promotes protein synthesis and reduces lipid accumulation of H. wyckioides, resulting in improved growth.en_US
dc.description.sponsorshipNatural Science Youth Research Foundation of Yunnan Agricultural University (Grant No. 2016ZR14) and Yunnan Province Agricultural Basic Research Joint Project (Grant No. 2018FG001-044; 2017FG001-021)en_US
dc.identifier.citationArginine supplementation in plant-rich diets affects growth, feed utilization, body composition, blood biochemical indices and gene expressions of the TOR signaling pathway in juvenile Asian red-tailed catfish (Hemibagrus wyckoiides), Journal of the World Aquaculture Society, 53(1): 133–150. https://doi.org/10.1111/jwas.12748.en_US
dc.identifier.doihttps://doi.org/10.1111/jwas.12748.
dc.identifier.urihttp://hdl.handle.net/20.500.11810/5875
dc.language.isoenen_US
dc.publisherWileyen_US
dc.subjectarginineen_US
dc.subjectblood chemistryen_US
dc.subjectgene expressionen_US
dc.subjectHemibagrus wyckioidesen_US
dc.subjectnutrient requirementen_US
dc.titleArginine supplementation in plant-rich diets affects growth, feed utilization, body composition, blood biochemical indices and gene expressions of the TOR signaling pathway in juvenile Asian red-tailed catfish (Hemibagrus wyckoiides)en_US
dc.typeJournal Article, Peer Revieweden_US
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