Dietary selenium requirement and toxicity levels in juvenile Nile tilapia, Oreochromis niloticus

Lee, Seunghan; Nambi, Rebecca Walugembe; Won, Seonghun; Katya, Kumar; Bai, Sungchul C.

doi:10.1016/j.aquaculture.2016.06.027

Cited by 75 publications

(56 citation statements)

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“…Based on the relationship of WG and dietary Se from broken‐line analysis, the fish fed diet with 0.57 mg Se/kg could achieve the best growth performance. The optimum Se level in our study was lower than 1.06 mg/kg selenium in the previous report in which non‐purified diets with plant ingredients were used (Lee et al, ). It was possible that plant ingredients could decrease the bioavailability of Se and increase the true requirement of optimal Se in fish (Nguyen et al, ).…”

Section: Discussioncontrasting

confidence: 59%

“…In many studies, the normal weight gains were about 350%–500% (Xu et al, ; Wang et al, ) for large size of fish and even higher (1,000%–1,200%) in small size of fish under the laboratory conditions (Gan et al, ; Xu et al, ). The dietary ingredients used in the study (Lee et al, ) were plants which are generally considered poor sources of minerals and may contain antagonists such as phytic acid (phytate) that are known to reduce bioavailability of minerals (Nguyen, Kubitza, Salem, Hanson, & Davis, ). Bioavailability of an element may be the main factor affecting element requirement of an animal, because it may vary by several orders of magnitude (Dashti & Bengmark, ).…”

Section: Introductionmentioning

confidence: 99%

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Optimum selenium requirement of juvenile Nile tilapia, Oreochromis niloticus

et al. 2019

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A feeding experiment was conducted to determine the optimum selenium requirement in juvenile Nile tilapia. Each of six purified diets with Se‐methionine levels at 0.05, 0.21, 0.41, 0.57, 0.79 and 1.00 mg/kg was assayed in triplicate with initial body weight of 3.00 ± 0.01 g for 8 weeks. The growth of fish was obviously increased when the dietary Se was less than 0.57 mg/kg diet and reached a plateau when the dietary Se was ≥0.57 mg/kg. Serum and hepatopancreatic glutathione peroxidase (GPx) activity increased markedly when the dietary Se was less than 0.57 mg/kg, but then decreased when the dietary Se was higher than 0.57 mg/kg. The malondialdehyde contents in hepatopancreas were significantly decreased when the dietary Se was higher than 0.79 mg/kg. No significant differences were observed in hepatopancreatic total antioxidant capability (T‐AOC) among the groups (p > .05). The results of this study indicated that Se addition as Se‐methionine was essential, while both the deficiency and excess levels of dietary Se would cause negative effects on growth or antioxidant capability in juvenile Nile tilapia. Based on broken‐line regression of WG and piecewise regression of liver GPx, the optimum requirement of Se for juvenile Nile tilapia is 0.57 mg/kg diet.

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Section: Discussioncontrasting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Optimum selenium requirement of juvenile Nile tilapia, Oreochromis niloticus

et al. 2019

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“…A capacidade do peixe em acumular selênio nos tecidos pode tornar a carne de pescado um interessante alimento funcional para a nutrição humana, especialmente como boa fonte de selênio (COTTER et al,2008). Em estudo realizado por Lee et al (2016) avaliando a exigência e toxicidade de selênio na dieta em juvenis de tilápia-do-Nilo O. niloticus usando como fonte orgânica a selenometionina e utilizando os seguintes níveis crescentes de selênio 0,30; 0,55; 0,73; 0,82; 1,04; 2,06; 2,95; 6,31 e 14,7 mg de Se/kg, observaram que o crescimento aumentou até 2,06 de inclusão de Se na dieta, após este nível de inclusão houve um decréscimo gradual no crescimento. Dessa forma, observa-se que a tilápia possui um requisito específico de Se, que não pode ser atendido por alimentações regulares ou pelo meio aquático.…”

Section: Tabela 1 Exigências De Macrominerais E Microminerais (Por Kunclassified

“…É geralmente aceito que o selênio orgânico (selenometionina) é mais prontamente disponível do que o selênio inorgânico (por exemplo selenito de sódio) para peixes (JARAMILLO et al, 2009). Portanto, o nível de exigência dietética de selênio para tilápia-do-Nilo pode ser satisfeito usando Se orgânico a comparativamente menor nível de inclusão do que a fonte inorgânica tradicional de Se (LEE et al, 2016).…”

Section: Tabela 1 Exigências De Macrominerais E Microminerais (Por Kunclassified

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Selenium and Vitamin in Diets for Tilapia-Do-Nilo

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et al. 2017

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RESUMO:Dentre as espécies de peixes que demonstram potencial para o cultivo no Brasil, a tilápia-do-Nilo (Oreochromis niloticus) é considerada a espécie mais produtiva. Essa espécie apresenta diversas vantagens, entre elas: rápido crescimento, maior rendimento de filé, resistência a baixa qualidade de água e boa aceitação no mercado consumidor. Na nutrição de peixes vários são os aspectos a serem avaliados em uma ração. O selênio e a vitamina E fazem parte de um sistema de defesa antioxidante multicomponente. Este sistema protege as células contra os efeitos adversos das espécies reativas de oxigênio e outros radicais livres que iniciam a oxidação. Além disso a suplementação de Vitamina E na dieta proporciona um maior desempenho produtivo, efeitos positivos nos parâmetros imunológicos dos peixes e resistência ao estresse. O selênio é um elemento que possui margem estreita entre os níveis de exigência e toxidez. As exigências são baixas, mas se não atingida, podem comprometer o sistema antioxidante e causar graves consequências para o metabolismo do animal. A capacidade do peixe em acumular selênio nos tecidos pode tornar a carne de pescado um interessante alimento funcional para a nutrição humana, especialmente como boa fonte de selênio. A tilápia-do-Nilo tem um nível de exigência específica de selênio e vitamina E que não pode ser satisfeito somente pelo ambiente aquático. Desta forma uma correta suplementação na dieta de minerais e vitaminas poderá garantir um maior desempenho, proporcionando uma melhor qualidade de carne e melhor aceitação no mercado.Palavras-chave: Antioxidante. Aquicultura. Imunológicos SELENIUM AND VITAMIN IN DIETS FOR TILAPIA-DO-NILO SUMMARY:Among the species of fish that demonstrate potential for cultivation in Brazil, Nile tilapia (Oreochromis niloticus) is considered the most productive species. This species has several advantages, including: rapid growth, increased fillet yield, low quality water resistance and good acceptance in the consumer market. In fish nutrition there are several aspects to be evaluated in a ration. Selenium and Vitamin E are part of a multicomponent antioxidant defense system. This system protects the cells against the adverse effects of reactive oxygen species and other free radicals that initiate oxidation. In addition, supplementation of Vitamin E in the diet provides greater productive performance, positive effects on immunological parameters of fish and resistance to stress. Selenium is an element that has a narrow margin between the levels of demand and toxicity. The requirements are low, but if not achieved, could compromise the antioxidant system and cause serious consequences for the animal metabolism. The fish's ability to accumulate selenium in tissues can make fish fillet an interesting functional food for human nutrition, especially as a good source of selenium. Nile Tilapia has a level of specific requirement of selenium and vitamin E that cannot be satisfied only by the aquatic environment. Thus a correct supplementation of minerals and vitamins ...

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Metal–amino acid complexes (Zn, Se, Cu, Fe, and Mn) enhance immune response, antioxidant capacity, liver function enzymes, and expression of cytokine genes in Nile Tilapia reared under field conditions

et al. 2023

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An 80‐day trial was carried out to evaluate the effects of replacing dietary inorganic trace minerals (ITM), with metal‐amino acid complexes (MAAC) on immune response, antioxidant capacity, and expression of cytokines genes of Nile tilapia (Oreochromis niloticus) reared in in‐pond hapas under field conditions. Quadruplicate groups of fish (93.65± 1.05 g average initial body weight ± SE) were stocked in 2‐m3 hapas fixed in a fish pond, at a density of 30 fish m‐3 (60 fish per hapa). Five isocaloric (17 MJ kg‐1), isonitrogenous (30% CP) extruded tilapia diets were produced, containing 0 (control), 25%, 50%, 75%, and 100% MAAC (Zn, Se, Cu, Fe, and Mn) as a replacement of the inorganic mineral premix. Replacement of ITM with MAAC premix enhanced the immune and antioxidant responses of Nile tilapia. The activities of lysozyme (LSZ) (96.71 U ml‐1 ± 0.69 – 120.83±1.43 U ml‐1), respiratory burst (0.54±0.08 mg ml‐1 – 3.61±0.20 mg ml‐1), alternative complement (ACH50) (34.49±56.96 % hem ml‐1– 56.96±0.79 % hem ml‐1), phagocytic cells (PA) (5.30±0.52% – 17.27±0.82%), phenoloxidase (PO) (34.96±0.96% – 54.68±0.92%), superoxide dismutase (SOD) (45.15±0.88% – 65.92±0.85%), glutathione peroxidase (GPx) (0.22±0.01 nM min‐1 mg‐1 – 1.94±0.09 nM min‐1 mg‐1), and liver function enzymes were all significantly improved (P<0.01, except for PA and GPx where P<0.05) with increasing supplemental MAAC up to 50% substitution level and decreased with further increase in MAAC to 75% and 100% levels. The expression of cytokine genes (mRNA abundance), including interferon (IFN‐γ) (2.67±0.03 – 4.62±0.08), tumor necrosis factor (TNF‐α) (2.96±0.05 – 6.73±0.05), serum alkaline phosphatase (AKP) (0.51±0.02 – 1.72±0.02), the integrated microbial genomes (IgM‐2) (22.51±0.36 ‐ 38.48±0.03) and transforming growth factor (TGF‐β) (1.84±0.02 – 7.76±0.02) genes was significantly upregulated in fish fed on MAAC–supplemented diets (P<0.05) compared with the control group. The 50% MAAC level produced the highest upregulation of these genes, whereas gene expression decreased with increasing dietary MAAC levels to 75% and 100%.

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Dietary selenium requirement and toxicity levels in juvenile Nile tilapia, Oreochromis niloticus

Cited by 75 publications

References 32 publications

Optimum selenium requirement of juvenile Nile tilapia, Oreochromis niloticus

Optimum selenium requirement of juvenile Nile tilapia, Oreochromis niloticus

Selenium and Vitamin in Diets for Tilapia-Do-Nilo

Metal–amino acid complexes (Zn, Se, Cu, Fe, and Mn) enhance immune response, antioxidant capacity, liver function enzymes, and expression of cytokine genes in Nile Tilapia reared under field conditions

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