Toxic effects of dietary of Al3+ ions in tilapias (Oreochromis niloticus) and protective effect of Zn2+ ion

Santos, Lídia Brizola; Paulino, Alexandre Tadeu; Tambourgi, Elias Basile; Almeida, Vitor C.

doi:10.1080/02772248.2010.486232

Cited by 8 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mineral compositions of the faeces in the present study showed high levels of Al and Fe (Table 5) suggesting that Al and Fe were excreted and were not accumulated in the fish body. These results are in agreement with those found by Santos, Paulino, Tambourgi and Almeida (2011) showing that Nile tilapia juveniles (13.2 AE 0.9 g) when fed with Al +3 -enriched diets containing up to 100 mg of Al +3 (Al (NO 3 ) 3 ) kg À1 feed excreted this metal in the faeces (448 mg kg À1 ). It indicated that Al was eliminated in the faeces and was not absorbed by tilapia organs.…”

Section: Discussionsupporting

confidence: 92%

Effect of dietary phosphorus supplementation on utilization of algae in the grow-out diet of Nile tilapiaOreochromis niloticus

Hussein

Dąbrowski

El-Saidy³

et al. 2012

Aquac Res

View full text Add to dashboard Cite

This research involved testing the replacement of corn gluten protein concentrate in the diet of 1.5 g Nile tilapia with biofuel algae‐based or algae supplemented with phosphorus diets. Experimental diets were formulated to replace 50% of the gluten meal protein in the control diet with biofuel algae protein (Alga50) or Spirulina (Spirulina50) protein. In addition, dicalcium phosphate (P) was added to the Alga50 at a concentration of 3.8% or 7.74% to mitigate aluminium (Al) toxicity and designated as Alga50 + P, and Alga50 + PP respectively. After 9 weeks of the feeding experiment, fish fed diets supplemented with P, Alga50 + P and Alga50 + PP differed significantly (P < 0.05) with respect to the feed conversion and protein deposition from the control. The mineral composition of the fish body showed a decrease in levels of Al and iron (Fe) due to the P supplements. The mineral composition of the faeces indicated that Al and Fe were excreted in the faeces and were not accumulated in the fish body. The effect of dicalcium P supplementation on the neutralization of Al in the diet resulted in improved fish growth and histological integrity of the gastrointestinal tract.

show abstract

Section: Discussionsupporting

confidence: 92%

Effect of dietary phosphorus supplementation on utilization of algae in the grow-out diet of Nile tilapiaOreochromis niloticus

Hussein

Dąbrowski

El-Saidy³

et al. 2012

Aquac Res

View full text Add to dashboard Cite

show abstract

“…The toxic effects of dietary aluminium (Al +3 ) in Nile tilapia were examined by Santos et al . (). Three different levels of Al (NO 3 ) 3 ·9H 2 O at 50, 75 and 100 mg kg −1 were fed to tilapia for 12 months.…”

Section: Discussionmentioning

confidence: 97%

“…Algae used in the current study contained a high level of Al and Fe. Several experiments were carried out to compare the effect of different levels of aluminium or iron supplementation on fish performance, specifically in Nile tilapia ( O. niloticus ) (Santos, Paulino, Tambourgi & Almeida ) and African catfish ( Clarias gariepinus ) (Baker, Martin & Davies ). In African catfish, the results showed that an increase in ferrous iron to 6354 mg Fe kg −1 diet resulted in liver Fe level of 745 μg g −1 in comparison with fish fed a diet unsupplemented with Fe (523 mg kg −1 ).…”

Section: Discussionmentioning

confidence: 99%

Enhancing the growth of Nile tilapia larvae/juveniles by replacing plant (gluten) protein with algae protein

Hussein

Dąbrowski

El-Saidy³

et al. 2012

Aquac Res

View full text Add to dashboard Cite

Diets incorporating different levels of corn gluten meal replacement using biofuel algae or Spirulina protein at 0%, 25%, 50%, 75% and 100% were evaluated for larval/juvenile stage of Nile tilapia (Oreochromis niloticus). Fish averaging 0.02 g were divided into groups of 50. There were three replicates per every dietary treatment that were fed one of six diets for 11 weeks. Corn gluten protein was replaced with algae on the protein basis. All diets were supplemented with 1.5% lysine and 0.5% methionine. The experimental diets were formulated to contain 37 ± 2.8% protein and 14 ± 4.3% lipid in the form of fish oil and soybean lecithin (phospholipids source). The results indicated that algae positively affected feed consumption and fish growth up to the 50% replacement and then performance was depressed. Significant differences in concentration of individual minerals (Al, Fe, Zn and Cu) in the whole fish body were found. Mineral composition of algae might have affected growth when diets which contained more than 75% of plant protein were replaced with microalgae. These findings suggest that up to 50% of dietary corn gluten meal protein can be replaced with microalgae which significantly enhance fish growth.

show abstract

“…Trace element concentrations in fillets were lower than in the diets ( Table 8 ), except for no change in selenium, suggesting these trace elements may be excreted by Nile tilapia. Aluminum (Al) and iron (Fe), for example, have been examined in a few dietary toxicity studies in tilapia [ 70 , 71 ]. We found that fillet concentrations, compared to diet concentrations, declined to below detection for Al and declined by an order of magnitude for Fe.…”

Section: Discussionmentioning

confidence: 99%

Towards sustainable aquafeeds: Evaluating substitution of fishmeal with lipid-extracted microalgal co-product (Nannochloropsis oculata) in diets of juvenile Nile tilapia (Oreochromis niloticus)

et al. 2018

View full text Add to dashboard Cite

Microalgae companies increasingly seek markets for defatted biomass that is left over after extracting omega-3 rich oil for human nutraceuticals and crude oil for fuels. Such a protein-rich co-product is a promising alternative to unsustainably sourced fishmeal in aquaculture diets. We report the first evaluation of co-product of the marine microalga Nannochloropsis oculata (N. oculata co-product) for replacing fishmeal in diets of Nile tilapia, a globally important aquaculture species. We conducted a nutrient digestibility experiment with N. oculata dried whole cells and N. oculata co-product, followed by an 84-day nutritional feeding experiment with N. oculata co-product. N. oculata co-product, more nutrient-dense than whole cells, had the highest digestibility for lysine, an essential amino acid that is often deficient in terrestrial crop meals; and for 20:5 n-3 EPA, making it a good option for EPA supplementation in tilapia feed. N. oculata co-product, despite containing higher amounts of protein than whole cells, had significantly lower digestibility for crude protein than whole cells. Apparent digestibility coefficients (ADC) of methionine were significantly lower in N. oculata co-product than in whole cells. The nutritional feeding experiment compared diets with N. oculata co-product that replaced fishmeal as follows: 0% replacement in reference diet (fishmeal as 7% of total diet) and test diets with 33%, 66% and 100% replacement of fishmeal (3%, 5.5%, and 8% of total diet, respectively). Results showed the 33% replacement diet yielded fish growth, feed conversion, and survival similar to the reference diet. Reduced digestibility and growth at greater N. oculata co-product inclusion levels may have been due to higher levels of anti-nutrients in co-product than whole cells. All diets yielded a n3:n6 ratio of tilapia fillet that is favorable for human consumption. Depositions of macro minerals and several trace elements in the fillet were not significantly different across diets. Thus, N. oculata co-product, when replacing 33% of fishmeal in tilapia feed, led to fish performance and flesh composition comparable to that of fish fed the reference diet, but its nutrient digestibility needs to be improved to achieve higher replacement levels.

show abstract

Toxic effects of dietary of Al³⁺ ions in tilapias (Oreochromis niloticus) and protective effect of Zn²⁺ ion

Cited by 8 publications

References 19 publications

Effect of dietary phosphorus supplementation on utilization of algae in the grow-out diet of Nile tilapiaOreochromis niloticus

Effect of dietary phosphorus supplementation on utilization of algae in the grow-out diet of Nile tilapiaOreochromis niloticus

Enhancing the growth of Nile tilapia larvae/juveniles by replacing plant (gluten) protein with algae protein

Towards sustainable aquafeeds: Evaluating substitution of fishmeal with lipid-extracted microalgal co-product (Nannochloropsis oculata) in diets of juvenile Nile tilapia (Oreochromis niloticus)

Contact Info

Product

Resources

About