Microalgae as fishmeal alternatives in aquaculture: current status, existing problems, and possible solutions

Gao, Shiyang; Chen, Weijun; Cao, Shenping; Sun, Ping; Gao, Xiaochan

doi:10.1007/s11356-024-32143-1

Cited by 4 publications

(1 citation statement)

References 143 publications

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“…This process has resulted in the emergence of a wide range of colorful and metabolically diverse algal groups, such as diatoms and dinoflagellates [4]. Microalgae are employed in activities such as wastewater treatment [5], biofuel generation [6], animal feed production [7], and the extraction of high-value-added products [8], among other applications. Additionally, microalgae show great potential as organisms for enhancing biological carbon sequestration aimed at mitigating global warming [9].…”

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confidence: 99%

The Microalgae <em>Chlamydomonas </em>for Bioremediation and Bioproduct Production

Bellido-Pedraza,

Torres,

Llamas

2024

Preprint

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The extensive metabolic diversity of microalgae, coupled with their rapid growth rates and cost-effective production, position these organisms as highly promising resources for a wide range of biotechnological applications. These characteristics allow microalgae to address crucial needs in both the agricultural, medical, and industrial sectors. Microalgae are proving to be val-uable in various fields, including the remediation of diverse wastewater types, the production of biofuels and biofertilizers, and the extraction of various products from their biomass. For decades, the microalga Chlamydomonas has been widely used as a fundamental research model organism in various areas such as photosynthesis, respiration, sulfur and phosphorus metabolism, nitrogen metabolism, and flagella synthesis, among others. However, in recent years, the potential of Chlamydomonas as a biotechnological tool for bioremediation, biofertilization, biomass, and bio-products production has been increasingly recognized. Bioremediation of wastewater using Chlamydomonas presents significant potential for sustainable reduction of contaminants and fa-cilitates resource recovery and valorization of microalgal biomass, offering important economic benefits. Chlamydomonas has also established itself as a platform for the production of a wide va-riety of biotechnologically interesting products, such as different types of biofuels, and high-value-added products. The aim of this review is to achieve a comprehensive understanding of the potential of Chlamydomonas in these aspects, and to explore their interrelationship, which would offer significant environmental and biotechnological advantages.

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confidence: 99%

The Microalgae <em>Chlamydomonas </em>for Bioremediation and Bioproduct Production

Bellido-Pedraza,

Torres,

Llamas

2024

Preprint

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Partial fishmeal replacement by soybean meal induces fish growth retardation and gut inflammation via gut mucosal barrier dysfunction and dysbiosis in largemouth bass

Chen,

Gao,

Chang

et al. 2024

Animal Feed Science and Technology

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Chicken Meal as a Fishmeal Substitute: Effects on Growth, Antioxidants, and Digestive Enzymes in Lithobates catesbeianus

Zhu,

Xu,

Dai

et al. 2024

Animals

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In pursuit of sustainable aquaculture, this study was performed to evaluate chicken meal as a substitute for fishmeal in bullfrog diets. Three experimental groups were established: a control group (FM) with 20% fishmeal, a CM50 group with 50% replacement (10% fishmeal), and a CM100 group with 100% replacement (0 fishmeal). Bullfrogs were fed for 56 days. The CM50 group exhibited significant increases in total weight gain and survival rate and a notable decrease in feed coefficient (p < 0.05). However, the CM100 group showed contrary effects. Increasing chicken meal substitution correlated with decreased amino acid content in muscle. Notably, the CM50 group demonstrated enhanced activities of antioxidant enzymes (CAT, T-AOC) and elevated gene expression levels (cat, sod, gst, etc.) in muscle and the intestine (p < 0.05), improved intestinal morphology, enhanced digestive enzyme activities (amylase, lipase), and reduced expression of inflammatory factors (il-1β, il-8, il-17, etc.). Conversely, the CM100 group’s indicators regressed to levels similar to or worse than those of the FM group. Therefore, a 50% substitution of fishmeal with chicken meal effectively promoted bullfrog survival, protected the intestines, and enhanced antioxidant capacity, supporting its potential as a fishmeal alternative. However, the adverse outcomes of the CM100 strategy, including growth retardation and reduced amino acid content in muscle, indicate that complete replacement is unsuitable.

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Microalgae as fishmeal alternatives in aquaculture: current status, existing problems, and possible solutions

Cited by 4 publications

References 143 publications

The Microalgae <em>Chlamydomonas </em>for Bioremediation and Bioproduct Production

The Microalgae <em>Chlamydomonas </em>for Bioremediation and Bioproduct Production

Partial fishmeal replacement by soybean meal induces fish growth retardation and gut inflammation via gut mucosal barrier dysfunction and dysbiosis in largemouth bass

Chicken Meal as a Fishmeal Substitute: Effects on Growth, Antioxidants, and Digestive Enzymes in Lithobates catesbeianus

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