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November 20, 2025Journal of FisheriesOpen Access

Effects of dietary protein on growth and nutrient utilization in ornamental koi fish Cyprinus rubrofuscus (Lacepede, 1803)

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Authors

WAWaqas AhmadAIAbir IshtiaqNKNaveed Ahmad Khan

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Overview

Experimental trial shows dietary protein impacts growth and feed efficiency percentage in koi fish, suggesting optimal levels for farming.

Key Points

  • This research aims to investigate the effects of different dietary protein levels on koi fish growth and nutrient utilization.
  • Fish were fed varying dietary protein levels (25-50%) for 90 days.
  • Growth parameters and feed conversion ratio (FCR) were measured every 15 days.
  • The diet consisted of feeding fish twice daily at a rate of 5% of their body weight.
  • The highest weight gain (170.98 g) occurred with the 35% dietary protein diet.
  • The best feed conversion ratio (1.65±0.12) was also seen in the 35% dietary protein diet.
  • The specific growth rate and protein efficiency ratio were significantly higher with the 35% diet compared to others.

Cite This Study

Ahmad et al. (2025) studied this question.

synapsesocial.com/papers/6924f07fc0ce034ddc35024ahttps://doi.org/10.17017/j.fish.991
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