Optimal dietary requirements of zinc in marine medaka Oryzias melastigma: Importance of daily net flux

Jian, Wang; Wang, Wen‐Xiong

doi:10.1016/j.aquaculture.2015.05.037

Cited by 20 publications

(12 citation statements)

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“…Zinc (Zn) is one of the most essential trace elements required for growth and other metabolic functions including development, reproduction and immunity in most animals like fish (Liang, Yang, Liu, Tian, & Liang, 2012;Lin, Lin, Yang, Li, & Luo, 2013;Wang & Wang, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effects of dietary zinc level on performance, zinc status, tissue composition and enzyme activities of juvenile Siberian sturgeon, Acipenser baerii (Brandt 1869)

et al. 2018

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This study conducted to evaluate the effect of dietary zinc (Zn) levels on feed utilization, tissue Zn composition and serum enzyme activities of juvenile Siberian sturgeon, Acipenser baerii. Five isoenergetic and isonitrogenous semi‐purified diets were formulated with increasing Zn sulphate (ZnSO4.5H2O) level to provide the actual Zn values of 14.7 (control), 20.8, 27.3, 37.7 and 46.4 mg/kg diet. Each diet was assigned to three groups of 20 experimental Siberian sturgeons with uniform size (initial weight of 26.52 ± 0.94 g) for a period of 8‐week feeding trial. Results showed that growth performance and muscle protein content were significantly increased with increasing dietary Zn level up to 27.3 mg/kg (p < .05), beyond which they remained significantly unchanged (p > .05). Muscle lipid content significantly declined with increasing dietary Zn level. While muscle and serum Zn contents were not significantly changed among treatments (p > .05), liver Zn content tended to rise with increasing dietary Zn supplementation. Alkaline phosphatase, superoxide dismutase and glutathione peroxidase activities were also raised with increasing dietary Zn level. The adequate amount of dietary Zn requirements for the Siberian sturgeon was estimated to be 28.24 mg/kg based on the relative growth rate and 34.60 mg/kg based on the liver Zn content.

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Section: Introductionmentioning

confidence: 99%

Effects of dietary zinc level on performance, zinc status, tissue composition and enzyme activities of juvenile Siberian sturgeon, Acipenser baerii (Brandt 1869)

et al. 2018

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“…Semi-purified basal diet composed of casein, rice starch, fish oil, egg yolk, vitamin premix (e.g., ascorbic acid 0.92 mg/g) and mineral mix (without Fe) was prepared exactly the same as in the previous study12, with the assayed crude protein, crude lipid and ash to be 31.5%, 14.4% and 4.2%, respectively. Five nominal Fe supplementary (i.e., 0, 80, 160, 320 and 640 mg Fe/kg feed) diets were prepared respectively by spiking stoichiometric amounts of FeCl 3 .6H 2 O (>99%, Sigma Aldrich) stock solution (i.e., 4.3 g Fe/L).…”

Section: Methodsmentioning

confidence: 99%

“…Radiotracer technique was applied to determine the Fe AE of medaka. The radiolabelled diets were prepared similarly as in previous study using 59 FeCl 3 stock (specific radioactivity 3.6 μCi/mL) 12 . Additional stoichiometric amount of stable FeCl 3 was added respectively to resemble the same Fe supplementary level used in the feeding experiment.…”

Section: Methodsmentioning

confidence: 99%

“…The presence of phytate in the fish feed could decrease the bioavailability of Fe (forming insoluble salt), which can be relieved by the additional supplement of phytase1011. Thirdly, previous study on Zn requirement in fish suggested that higher Zn flux was needed in juvenile stage than in post-juvenile stage12, and similar stage-dependent Fe requirement may also occur. Concerning these factors, our knowledge of the basic biological Fe requirements in fish is still lacking, not to mention its underlying regulation.…”

mentioning

confidence: 99%

“…Stage-dependent Fe requirement was determined based on these responses and quantified using universal applicable net Fe flux. A modified fractional model developed by Wang and Wang12 was also applied to estimate the essential daily net Fe flux in medaka as well as some other fish species at different life stages.…”

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confidence: 99%

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Novel insights into iron regulation and requirement in marine medaka Oryzias melastigma

Wang

2016

Sci Rep

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Iron (Fe) is an essential trace element for marine fish. However, our knowledge of Fe requirements at different development stages of marine fish is still limited. Here, we reported the efficient Fe absorption strategies adopted by larval fish under different dietary Fe supplementary levels (i.e., 0–640 mg/kg). Biokinetically, the larval fish controlled their dietary Fe assimilation efficiency (AE, 1.6–18.5%), and enhanced their waterborne Fe uptake (ca. 2.5 fold change of uptake rate constant) once the dietary Fe was deficient (i.e., 27.4 mg Fe/kg feed). Transcriptionally, the expression of hepcidin1 (hep1; Fe regulator; i.e., 2.3–15.7 fold change) in larval fish was positively correlated with the Fe supplementary levels. Comparatively, the female adult fish were poor in assimilating the added Fe source (i.e., ferric form) with similar life-sustainable levels of Fe (i.e., 0.046–0.12 μg/g/d assimilated for Fe supplementary levels of 27.4, 162 and 657 mg Fe/kg feed). The overall feeding experiments suggested that dietary net Fe flux sufficient for the normal growth of larval medaka was 0.71–1.75 μg/g/d (i.e., 83.9 mg Fe/kg feed), consistent with the modeled value (i.e., 1.09–2.16 μg/g/d). In female adults, the estimated essential net Fe flux was 0.88–0.90 μg/g/d.

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Application of Nanotechnology for Abiotic Stress Management in Aquaculture

Kumar

Bhushan

Singh

et al. 2021

Advances in Fisheries Biotechnology

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Optimal dietary requirements of zinc in marine medaka Oryzias melastigma: Importance of daily net flux

Cited by 20 publications

References 41 publications

Effects of dietary zinc level on performance, zinc status, tissue composition and enzyme activities of juvenile Siberian sturgeon, Acipenser baerii (Brandt 1869)

Effects of dietary zinc level on performance, zinc status, tissue composition and enzyme activities of juvenile Siberian sturgeon, Acipenser baerii (Brandt 1869)

Novel insights into iron regulation and requirement in marine medaka Oryzias melastigma

Application of Nanotechnology for Abiotic Stress Management in Aquaculture

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