Aquaculture

Recycling biofloc waste as novel protein source for crayfish with special reference to crayfish nutritional standards and growth trajectory

R. Lunda, K. Roy, et al.

This study by Roman Lunda, Koushik Roy, Petr Dvorak, Antonin Kouba, and Jan Mraz explores the potential of biofloc biomass as a protein source for red swamp crayfish. Through a 7-week growth trial, the research reveals that while moderate inclusion of biofloc enhances growth, excessive amounts may hinder development due to nutritional imbalances and mineral stress. Dive into the findings that balance innovation and caution in aquaculture!

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Playback language: English

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Abstract

This study assessed the suitability of biofloc biomass (BM) as a protein source for red swamp crayfish (*Procambarus clarkii*). Crayfish nutritional standards were established via meta-analysis, against which BM was evaluated in a 7-week growth trial using graded BM inclusions (0%, 33%, 66%, 100%) in commercial feed. Results indicate that BM inclusion at 33–66% enhanced growth; however, higher inclusions (≥66%) negatively impacted growth due to high ash content, arginine deficiency, and insufficient non-protein energy:protein ratio. While no critical heavy metal bioaccumulation occurred, potential mineral and mercury stress were observed with 100% BM feeding.

Publisher

Scientific Reports

Published On

Nov 11, 2020

Authors

Roman Lunda, Koushik Roy, Petr Dvorak, Antonin Kouba, Jan Mraz

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