Feeding Whole Thraustochytrid Biomass to Cultured Atlantic Salmon (Salmo salar) Fingerlings: Culture Performance and Fatty Acid Incorporation

Journal of Marine Science and Engineering

AndrewT. Revill¹  CedricJ. Simon²  KimJye Lee Chang³  PeterD. Nichols³  ChristopherC. Parrish⁴ 

[1] Food, Qld Biosciences Precinct, 306 Carmody Road, St Lucia, QLD 4067, Australia;;CSIRO Agriculture &CSIRO Oceans and Atmosphere, GPO Box 1538, Hobart, TAS 7001, Australia;Department of Ocean Sciences, Memorial University, St. John’s, NL A1C 5S7, Canada;

关键词: thraustochytrid;    atlantic salmon;    compound specific stable isotope analysis;    polyunsaturated fatty acids;    aquaculture;   

DOI  :  10.3390/jmse8030207

来源: DOAJ

【 摘 要 】

Replacement of fish oil by 5% thraustochytrid whole cell biomass in diets for Atlantic salmon had no ill effect on fish growth performance, carcass total lipid and total fatty acid content. Carcass fatty acid composition indicated incorporation of the dietary thraustochytrid-derived fatty acids. This was confirmed by compound specific stable isotope analysis (CSIA) which revealed significantly ¹³C-depleted (δ¹³C value of −24‱) ω3 long-chain (≥C₂₀) polyunsaturated fatty acids (ω3 LC-PUFAs) in the fingerlings fed the thraustochytrid biomass containing diet, reflecting the highly ¹³C-depleted glycerol used to grow the thraustochytrid cultures. This finding demonstrates the bioavailability of the ω3 LC-PUFA of the Australian strain thraustochytrid culture (TC) 20 from the whole cell biomass that was partly cultivated on crude glycerol produced during biodiesel manufacturing. This paper demonstrates the value of Australian thraustochytrid strains grown heterotrophically for their wider biotechnological potential including as a source of higher value lipids, in particular the health-benefitting ω3 LC-PUFA, for use in aquaculture and other applications.

【 授权许可】

Unknown