Optimal dietary alpha-linolenic acid/linoleic acid ratio improved digestive and absorptive capacities and target of rapamycin gene expression of juvenile grass carp (<i>Ctenopharyngodon idellus</i>)

Zeng, Yun‐Yun; Jiang, Wei‐Dan; Liu, Y.; Wu, Pei; Zhao, Juan; Jiang, Junjie; Kuang, Sheng‐Yao; Tang, Ling; Tang, Wu‐Neng; Zhang, Y.-A.; Zhou, Xiao‐Qiu; Feng, Lin

doi:10.1111/anu.12337

Cited by 91 publications

(47 citation statements)

References 84 publications

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“…Not only that, it was reported that the growth of fish was also positively related to the ability of nutrients uptake in the intestines, which could be partly influenced by intestinal morphology(Olsen et al, ; Zeng et al, ). The blood capillary hyperaemia was an important part of intestinal morphology in fish (Zheng et al, ).…”

Section: Discussionmentioning

confidence: 99%

Dietary taurine supplementation to a plant protein source‐based diet improved the growth and intestinal immune function of young grass carp (Ctenopharyngodon idella)

et al. 2019

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The effects of taurine supplementation on the growth and intestinal immune function in young grass carp (Ctenopharyngodon idella) were investigated in this study. A total of 540 fish (initial average weights of 255.74 ± 0.65 g) were fed one fishmeal diet and five all‐plant protein source‐based diets with graded levels of taurine (0 to 1.98g/kg diet) for 60 days, and then challenged with Aeromonas hydrophila for 14 days. First, the results showed that the taurine supplementation improved growth (PWG, TGC, FI and FE), enteritis resistance, intestinal antimicrobial compounds (LZ, ACP, C3, C4, IgM, hepcidin, LEAP‐2A, LEAP‐2B, β‐defensin‐1 and MUC2) and attenuated intestinal inflammation in young grass carp under the all‐plant protein source‐based diet. Second, the taurine supplementation attenuated intestinal inflammation partially referring to nuclear factor kappa B (NF‐κB) and target of rapamycin (TOR) signallings. Finally, under the all‐plant protein source‐based diet, the comparable level of taurine supplementation based on growth and ability against enteritis relative to fishmeal diet was established as 0.50 g/kg diet, and the optimal levels of taurine supplementation based on thermal‐unit growth coefficient (TGC), ability against enteritis and acid phosphatase (ACP) activity were established as 0.97, 1.08 and 1.21 g/kg diet, respectively.

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Section: Discussionmentioning

confidence: 99%

Dietary taurine supplementation to a plant protein source‐based diet improved the growth and intestinal immune function of young grass carp (Ctenopharyngodon idella)

et al. 2019

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“…Thereby, we next investigated effects of ETSP on fish digestive and absorptive ability. Supplementation of ETSP in the low-protein diet enhanced hepatopancreas and intestinal development and digestive and brush border enzyme activities of fish To our knowledge, fish digestive and absorptive capacity is closely related to the growth and function of digestive organs as well as the activities of digestive enzymes (trypsin, chymotrypsin, lipase, and amylase) and brush border enzymes (AKP, Na + /K + -ATPase, γ-GT, and CK) (Lin and Zhou 2006;Zeng et al 2015). The present study showed that decrease of 2% dietary protein (dietary protein level from 34 to 32%) decreased the HW, IL, RGL, IW, ISI, IPC, fold heights in MI and DI, as well as activities of most digestive enzymes in intestine and hepatopancreas and brush border enzymes in intestine, whereas adding 10 g/kg ETSP to the low-protein diet reversed these negative effects by low dietary protein level.…”

Section: Discussionmentioning

confidence: 99%

“…However, the detailed mechanisms require further investigation. In fish, the gene expression of brush border enzymes may be regulated by TOR signaling pathway (Zeng et al 2015). Li et al (2016) suggested that the upregulation of TOR molecule stimulated intestinal brush border enzyme gene expression in grass carp.…”

Section: Discussionmentioning

confidence: 99%

Supplementation of enzyme-treated soy protein saves dietary protein and promotes digestive and absorptive ability referring to TOR signaling in juvenile fish

Xiao

Jiang

Feng

et al. 2017

Fish Physiol Biochem

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This study was conducted to evaluate the effect of enzyme-treated soy protein (ETSP) supplementation in the low-protein diet on growth performance, digestive and absorptive capacities, and related signaling molecules' gene expressions in juvenile Jian carp. The results showed that percent weight gain (PWG), specific growth rate (SGR), and feed intake (FI) were decreased by reducing dietary protein from 34 to 32% (P < 0.05). Supplying low-protein diet with optimal ETSP increased previously mentioned indices of juvenile Jian carp (P < 0.05), which also had no significant difference with the high-protein diet (34%CP) (P > 0.05). Compared with the low-protein diet, appropriate ETSP supplementation in the low-protein diet increased (P < 0.05) (1) the trypsin, lipase, and amylase activities in the hepatopancreas; (2) cholecystokinin concentration in the proximal intestine; (3) the γ-glutamyl transpeptidase (γ-GT), alkaline phosphatase (AKP), and Na + /K + -ATPase activities in all intestinal segments; and (4) the messenger RNA (mRNA) levels of trypsin, lipase, and amylase in hepatopancreas and γ-GT in the mid (MI) and distal (DI) intestine, alkaline phosphatase in MI, and Na + /K + -ATPase and target of rapamycin in all intestinal segments. At the same time, appropriate ETSP supplementation in the low-protein diet downregulated the mRNA levels of AKP in the DI and eIF4E-binding protein 2 in all intestinal segments (P < 0.05). In conclusion, adding 10 g ETSP/kg diet in the low-protein diet can restore the growth performance and digestive and absorptive abilities to the levels in group with 34% dietary protein. Supplementation of optimal ETSP in the low-protein diet enhanced the digestive and absorptive abilities and regulated the signaling molecules related to the TOR signaling pathway.

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“…The biotransformation pathway of methyl 2-methylvalerate should be confirmed by radioactive isotope labeling experiment. Linolenic acid as the important member of fatty acids had been considered as the essential fatty acids (Zeng et al 2015), which could be transformed perhaps from n-hexadecanoic acid as showed in Table 1. The increases of linolenic acid should also improve the quality of vine tea.…”

Section: Discussionmentioning

confidence: 99%

Biotransformation of vine tea (Ampelopsis grossedentata) by solid-state fermentation using medicinal fungus Poria cocos

Wang

Huang

et al. 2016

J Food Sci Technol

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Vine tea was bio-transformed using Poria cocos by solid-state fermentation in order to improve its taste and quality. Volatile components in vine tea were also identified by GC-MS. The changes of flavonoid, tea polyphenols and polysaccharides in fermented vine tea were evaluated. Flavonoid and polyphenols in vine tea were remained unchanged even after biotransformation, but content of polysaccharides increased to 3.9-fold than that of unfermented vine tea. Antioxidant activity such as DPPH free radical scavenging capacity (SR) was determined that there was a positive correlation between SR and content of polysaccharides in vine tea. Methyl 2-methylvalerate-a new volatile compound was identified and gave the vine tea rich delicate fragrance of fruits. The content of linolenic acid increased from 0.88 to 19.59 %. Biotransformation improved the taste and quality of vine tea.

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Optimal dietary alpha-linolenic acid/linoleic acid ratio improved digestive and absorptive capacities and target of rapamycin gene expression of juvenile grass carp (Ctenopharyngodon idellus)

Cited by 91 publications

References 84 publications

Dietary taurine supplementation to a plant protein source‐based diet improved the growth and intestinal immune function of young grass carp (Ctenopharyngodon idella)

Dietary taurine supplementation to a plant protein source‐based diet improved the growth and intestinal immune function of young grass carp (Ctenopharyngodon idella)

Supplementation of enzyme-treated soy protein saves dietary protein and promotes digestive and absorptive ability referring to TOR signaling in juvenile fish

Biotransformation of vine tea (Ampelopsis grossedentata) by solid-state fermentation using medicinal fungus Poria cocos

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