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June 18, 2026Aquaculture NutritionOpen Access

Paecilomyces variotii Mycoprotein in Diets for Juvenile Rainbow Trout: Effects on Growth Performance, Intestinal Health and Technical Feed Quality

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Authors

AGAshwath GaudhamanSwedish University of Agricultural SciencesAVAleksandar VidakovićAnimal Welfare InstituteNWNiklas WarwasSwedish University of Agricultural Sciences

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Overview

Randomized trial evaluates effects of Paecilomyces variotii on growth and health in juvenile rainbow trout, suggesting dietary limits for inclusion.

Key Points

  • This research aims to assess the impact of Paecilomyces variotii in the diet of juvenile rainbow trout on growth performance and intestinal health.
  • Five experimental diets with varying levels of P. variotii (0%, 5%, 10%, 20%, and 30%) were formulated.
  • Juvenile rainbow trout were fed for 9 weeks in triplicate tanks per treatment.
  • Feed quality, growth performance, and intestinal health metrics were evaluated post feeding.
  • At 30% P. variotii, fish showed reduced feed intake and growth, indicating an upper tolerance level.
  • Transepithelial potential was significantly lower in fish fed the 30% diet, suggesting compromised intestinal integrity.
  • Fish on a 30% diet had longer villi, although no significant difference was noted in goblet cell area among treatments.

Cite This Study

Gaudhaman et al. (2026) studied this question.

synapsesocial.com/papers/6a338b7a630953a74978d0eahttps://doi.org/10.1155/anu/4320030
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