Cell wall disruption increases bioavailability of Nannochloropsis gaditana nutrients for juvenile Nile tilapia (Oreochromis niloticus)

Teuling, Emma; Wierenga, Peter A.; Agboola, Jeleel Opeyemi; Gruppen, Harry; Schrama, J.W.

doi:10.1016/j.aquaculture.2018.09.047

Cited by 97 publications

(84 citation statements)

References 33 publications

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“…The algae suspension was passed through the mill three times to break the majority of the algal cells. Cell disruption was monitored by microscopy (Teuling et al, ).…”

Section: Methodsmentioning

confidence: 99%

“…Microscopic analysis, in vitro protein hydrolysis, nitrogen solubility, ion leaching, fat extractability and buffering capacity tests were used to quantify the extent of disruption on microalgae cells. Extensive description of methods and results of these accessibility tests can be found in Teuling et al (). These results were used to assessed the relationship between the in vitro accessibility of nutrients and their corresponding digestibility in African catfish.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, the aim of this study was to assess the effects of cell wall disruption on accessibility and digestibility of nutrients from microalga in African catfish. In addition, the results from African catfish were compared to those from Nile tilapia (Teuling, Wierenga, Agboola, Gruppen, & Schrama, ), to determine the effects of fish species on utilization of the disrupted microalga.…”

Section: Introductionmentioning

confidence: 99%

“…The variability observed in these studies is due to the differences in microalgae species, types of disruption treatment and the impact generated on the microalgae cells. To determine the impact of cell wall disruption treatments, methods were developed by Teuling et al () to quantify nutrient accessibility from disrupted microalgae. That study also shows a strong positive correlation between in vitro accessibility and in vivo digestibility of nutrients from disrupted microalgae in Nile tilapia (Teuling et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…African catfish). To test these hypotheses, six different microalgal treatments (1 untreated and 5 treated N. gaditana ) were fed to African catfish ( Clarias gariepinus ) at a 30% inclusion level in the diet and these data were compared with earlier published data on Nile tilapia ( Oreochromis niloticus) fed the same batch of diets (Teuling et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Cell wall disruption: An effective strategy to improve the nutritive quality of microalgae in African catfish ( Clarias gariepinus )

et al. 2019

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The rigid cell walls of microalgae may hinder their utilization in fish feeds. The current experiment assessed the correlation between the accessibility of microalgae nutrients and their in vivo digestibility in African catfish. Nannochloropsis gaditana biomass was subjected to physical or mechanical treatments to weaken its cell wall; untreated—no disruption treatment (UNT), pasteurization (PAS), freezing (FRO), freeze‐drying (FRD), cold pasteurization (L40) and bead milling (BEM). Six experimental diets formulated from differently treated and untreated microalgae (at 30% diet inclusion level) were tested on growth performance and apparent nutrient digestibility (ADCs) in juvenile African catfish. A basal diet (REF) containing no microalgae was used as reference diet. Results showed that biomass gain and feed conversion ratio of fish fed L40 and BEM diets increased by 13% and 11%, respectively, relative to the UNT diet. Additionally, FRD, FRO, L40 and BEM cell wall disruption treatments improved protein digestibility by 0.5%, 5.9%, 8.4% and 16.3%, respectively, compared to the UNT treatment. There was a positive correlation between accessibility of microalgal nutrients and their digestibility in African catfish. Nutrient digestibility of microalgae was dependent on extent of cell disruption. Also, the impact of cell disruption on nutrient digestibility of microalgae differs between African catfish and Nile tilapia.

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“…The algae suspension was passed through the mill three times to break the majority of the algal cells. Cell disruption was monitored by microscopy (Teuling et al, ).…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cell wall disruption: An effective strategy to improve the nutritive quality of microalgae in African catfish ( Clarias gariepinus )

et al. 2019

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Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (Oreochromis niloticus)

Trevi,

Uren Webster,

Consuegra

et al. 2024

Aquaculture Fish & Fisheries

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Microalgae offer a sustainable source of omega − 3 fatty acids that can replace fish oil in aquafeeds, but the nutritional benefits are not always clear, particularly when microalgae are used as complete oil replacements in starter feeds. We compared the survival, growth, omega − 3 deposition and composition of the gut microbiota of juvenile mixed‐sex Nile tilapia (Oreochromis niloticus) that had been fed over a 3‐month period on six isonitrogenous, isolipidic and isocaloric aquafeeds that varied only on the contribution of fish oil, soya oil and microalgae (Schizochytrium) oil as lipid sources. Survival was not affected by diet, but fish fed a diet where the entire oil component (5%) was replaced by microalgae oil grew twice as fast as fish fed plant oil or a mixture of plant and fish oil. Dietary omega − 3 content was strongly correlated with omega − 3 deposition in the fish fillet. Complete replacement of fish oil by plant oil caused a significant decrease in the abundance of Peptostreptococcaceae and an increase in the abundance of Aeromonadaceae which is often associated with an inflammatory response in the fish gut. In contrast, when fish and soya oil in the reference diet were replaced by 100% microalgae oil, an increase in Mycobacteriaceae was observed. Our study indicates that Schizochytrium oil can be used to improve the growth of Nile tilapia and increase its omega − 3 content without any of the detrimental effects on the gut microbiome typically associated with some plant oil replacements.

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Nanoformulations Loaded with Microalgal Bioactive Compounds for Disease Therapy

Tabassum

Ahmad²

2021

Nanotechnology in the Life Sciences

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Cell wall disruption increases bioavailability of Nannochloropsis gaditana nutrients for juvenile Nile tilapia (Oreochromis niloticus)

Cited by 97 publications

References 33 publications

Cell wall disruption: An effective strategy to improve the nutritive quality of microalgae in African catfish ( Clarias gariepinus )

Cell wall disruption: An effective strategy to improve the nutritive quality of microalgae in African catfish ( Clarias gariepinus )

Effects of micro‐algae dietary oil replacement on growth, omega − 3 deposition and gut microbiome composition of Nile tilapia (Oreochromis niloticus)

Nanoformulations Loaded with Microalgal Bioactive Compounds for Disease Therapy

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