Assessment of Several Feed Varieties in Carp Polyculture

Year : 2026 | Volume : 15 | Issue : 01 | Page : 1 6
    By

    Chandan Chakraborty,

  • Sudip Barat,

  1. Research Scholar, Department of Zoology, University of North Bengal, Raja Rammohanpur, Siliguri, Darjeeling, West Bengal, India
  2. Professor, Department of Zoology, University of North Bengal, Raja Rammohanpur, Siliguri, Darjeeling, West Bengal, India

Abstract

This six-month aquaculture study evaluated the effects of four distinct feeding treatments on the production and development of a five-species polyculture system comprising common carp (Cyprinus carpio), grass carp (Ctenopharyngodon idella), Rohu, Katla, and Mrigel. The experiment utilized  the total volume for eight ponds, each with a volume of 150 m3 is 1200 m3 (cubic meters) to compare: T1 (finely chopped Dubo grass and mash feed), T2 (sinking pellet), T3 (floating pellet), and T4 (non-treatment control). The primary objective was to assess the comparative performance and economic viability of these feeding regimes. The results established T3 (floating pellet) as the most effective treatment for enhancing fish performance. T3 achieved the largest combined extrapolated gross and net fish production, followed closely by T2, and then T1. This superior productivity was attributed to better nutrient utilization, reflected in T3 having the lowest Feed Conversion Ratio (FCR), with T2 and T1 ranking second and third, respectively. The floating nature of the T3 feed likely minimizes waste and allows for visual confirmation of consumption, leading to a more efficient system. From an economic perspective, T3 also dominated profitability metrics. While T3 had the highest total production expenses, the high output led to superior financial returns. The gross margin was significantly higher in both T2 and T3 compared to T1 ($p < 0.05$). Most critically, the benefit-cost ratio (BCR) was highest in T3 and lowest in T1 ($p < 0.05$), with T2 showing no substantial difference from T3, indicating that the higher cost of pellet feeds was more than offset by the increased yield and efficiency. The study conclusively demonstrated that both sinking and floating pellets enhance nutrient utilization and increase output relative to mash feed and the control, with the floating pellet (T3) offering the optimal balance of superior production and economic profitability in this mixed-species carp culture.

Keywords: Carp polyculture, feeding strategies, floating pellet (T3), feed conversion ratio (FCR), benefit-cost ratio (BCR)

[This article belongs to Research and Reviews : Journal of Veterinary Science and Technology ]

How to cite this article:
Chandan Chakraborty, Sudip Barat. Assessment of Several Feed Varieties in Carp Polyculture. Research and Reviews : Journal of Veterinary Science and Technology. 2025; 15(01):1-6.
How to cite this URL:
Chandan Chakraborty, Sudip Barat. Assessment of Several Feed Varieties in Carp Polyculture. Research and Reviews : Journal of Veterinary Science and Technology. 2025; 15(01):1-6. Available from: https://journals.stmjournals.com/rrjovst/article=2025/view=232631


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Regular Issue Subscription Original Research
Volume 15
Issue 01
Received 29/10/2025
Accepted 04/11/2025
Published 05/11/2025
Publication Time 7 Days
42

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