Dietary supplementation of Aurantiochytrium sp. meal, a docosahexaenoic-acid source, promotes growth of Nile tilapia at a suboptimal low temperature

Nóbrega, Renata Oselame; Batista, Rosana Oliveira; Corrêa, Camila Fernandes; Mattioni, Bruna; Filer, Keith; Pettigrew, J. E.; Fracalossi, Débora Machado

doi:10.1016/j.aquaculture.2019.04.030

Cited by 37 publications

(25 citation statements)

References 41 publications

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“…is a heterotrophic microorganism found in marine habitats, belonging to the family Thraustochytridae, which can be considered as a possible novel substitute for fish oil because it is rich in DHA. Our team evaluated the inclusion of such a novel feed additive in diets of Nile tilapia at an optimal temperature (28 • C) [22,23] and at a suboptimal temperature (22 • C) [15]. Our findings show that for Nile tilapia kept at cold, suboptimal temperature, dietary supplementation with 10 g kg −1 Aurantiochytrium sp.…”

Section: Introductionmentioning

confidence: 96%

“…The availability of Nile tilapia strains that are more tolerant to low temperatures and the adoption of sustainable management practices can improve production in subtropical regions. However, research on winter diets for Nile tilapia, focusing on nutrients and biological responses, are also reported to improve performance [9,[13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…Polyunsaturated fatty acids (PUFA) of 18-carbon chains, such as α-linolenic acid (α-LNA,18:3 n-3) and/or linoleic acid (LOA, 18:2 n-6), meet the requirements of fatty acids for the optimal growth of Nile tilapia when reared in the ideal temperature range (26-30 • C). However, dietary supplementation with n-3 long-chain PUFA (n-3 LC-PUFA), such as docosahexaenoic acid (DHA, 22:6 n-3), promotes further growth and utilization of nutrients when Nile tilapia are maintained for long periods at low temperatures such as 22 • C [ [14][15][16]. Several studies have reported that Nile tilapia are efficient in storing body n-3 LC-PUFA when available in the diet, especially in response to cold temperature, increasing fatty acid unsaturation in cell membranes to maintain their fluidity and permeability [15,18].…”

Section: Introductionmentioning

confidence: 99%

“…However, dietary supplementation with n-3 long-chain PUFA (n-3 LC-PUFA), such as docosahexaenoic acid (DHA, 22:6 n-3), promotes further growth and utilization of nutrients when Nile tilapia are maintained for long periods at low temperatures such as 22 • C [ [14][15][16]. Several studies have reported that Nile tilapia are efficient in storing body n-3 LC-PUFA when available in the diet, especially in response to cold temperature, increasing fatty acid unsaturation in cell membranes to maintain their fluidity and permeability [15,18]. Such a mechanism is reflected in an increase in body PUFA (mainly n-3 PUFA) concentration [10,18].…”

Section: Introductionmentioning

confidence: 99%

“…Our findings show that for Nile tilapia kept at cold, suboptimal temperature, dietary supplementation with 10 g kg −1 Aurantiochytrium sp. meal (AM) improved growth by 16%, in addition to improving feed efficiency, specific growth rate, and apparent net protein retention when compared to fish fed a diet without supplementation [15]. When comparing two sources of DHA (AM and cod liver oil, CLO), at similar DHA concentrations, fish fed the diet supplemented with AM had significantly higher growth performance, feed efficiency, and protein utilization than fish fed the CLOsupplemented diet.…”

Section: Introductionmentioning

confidence: 99%

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Aurantiochytrium sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature

Batista

Nóbrega

Schleder

et al. 2021

Fishes

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Aurantiochytrium sp. is a heterotrophic microorganism that produces docosahexaenoic acid (DHA), thus being considered as a possible replacement for fish oil in aquafeeds. We investigated the effect of Aurantiochytrium sp. meal (AM) dietary levels (0, 5, 10, 20, and 40 g kg−1) on Nile tilapia body and hepatopancreas fatty acid (FA) profile, body FA retention, somatic indices, and morphophysiological changes in the intestine and hepatopancreas, after feeding Nile tilapia juveniles (average initial weight 8.47 g) for 87 days at 22 °C. The 10AM diet was compared to a control diet containing cod liver oil (CLO), since their DHA concentration was similar. Within fish fed diets containing increasing levels of AM, there was a linear increase in n-3 FA content, especially DHA, which varied in the body (0.02 to 0.41 g 100 g−1) and hepatopancreas (0.15 to 1.05 g 100 g−1). The morphology of the intestines and hepatopancreas was positively affected in AM-fed fish. Fish fed 10AM showed less accumulation of n-3 FAs in the body and hepatopancreas when compared to fish fed CLO. Therefore, AM is an adequate substitute for fish oil in winter diets for Nile tilapia, with the supplementation of 40AM promoting the best results regarding intestine and hepatopancreas morphophysiology.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Aurantiochytrium sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature

Batista

Nóbrega

Schleder

et al. 2021

Fishes

Self Cite

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Delivering a Nutritionally Enhanced Tilapia Fillet Using a Pre‐Harvest Phase Omega‐3 Thraustochytrids Protist Enriched Diet

Davies

Roderick²,

Brudenell‐Bruce³

et al. 2022

Euro J Lipid Sci & Tech

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Nile tilapia (Oreochromis niloticus) offers an affordable food source to many low‐income consumers. However, farmed tilapia has drawn much criticism over the low omega‐3 (n‐3) and high omega‐6 (n‐6) lipid levels. Subsequently, it has been questioned whether it is truly healthy food. This study fed tilapia with a specialized “finishing” diet with the inclusion of commercial Thraustochytrids protist biomass and oil before the harvestable fish size. The fish are fed with two different dietary regimes over 6 weeks. One is a commercially available tilapia feed used as a reference. The second diet is composed of an exclusive oil source from Thraustochytrids protist (HI‐n3). The results show that HI‐ n3 has significantly increased the fillet n‐3 content by 400% in comparison to commercial diet (COM) after Week 6 of feeding. Specifically, docosahexaenoic acid (DHA, n‐3) content is the attributing fatty acid for the n‐3 increase. This is particularly evident when DHA is expressed as a percentage of total lipid content. The n‐3:n‐6 ratio increased in tilapia fed with the HI‐n3 diet attributed to the DHA accumulation. The investigation shows that it is possible to favorably “lipid tailor” tilapia before harvest. Practical applications: The practical application of this technique is to enrich farmed tilapia with a high dietary omega‐3 (n‐3) Thraustochytrids protist oil source for a short‐term period before harvesting. It is an objective that the fillet product would be more functional in its nutritional content by supplying more than just high‐quality protein for consumers. This would have paramount implications for low‐income consumers, where high n‐3 oil foods are not readily available or affordable (e.g., landlocked nations). Furthermore, tilapia is widely consumed in China and Southeast Asian countries but is also promoted as a high nutritional value food source in the western hemisphere. This investigation advocates the ability to change the image of this fish species by a simple dietary manipulation. In an era of elevated intake of omega 6 (n‐6) fatty acids food sources, n‐3 rich fish is a vital balance to counter this negative trend in human health.

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Potential of Scenedesmus sp. and Aurantiochytrium spp. as protein and n-3 fatty acid sources in practical diets for juvenile Penaeus vannamei

Nunes,

Façanha,

Leite

et al. 2024

Aquacult Int

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Dietary supplementation of Aurantiochytrium sp. meal, a docosahexaenoic-acid source, promotes growth of Nile tilapia at a suboptimal low temperature

Cited by 37 publications

References 41 publications

Aurantiochytrium sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature

Aurantiochytrium sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature

Delivering a Nutritionally Enhanced Tilapia Fillet Using a Pre‐Harvest Phase Omega‐3 Thraustochytrids Protist Enriched Diet

Potential of Scenedesmus sp. and Aurantiochytrium spp. as protein and n-3 fatty acid sources in practical diets for juvenile Penaeus vannamei

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