Dietary protein requirement of stunted fingerlings of rohu, Labeo rohita (Hamilton) during grow-out stage


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Authors

  • R V Kumar Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
  • K S Ramesh Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
  • Prakash Patil Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
  • B T Naveen Kumar Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
  • Joseph K Manissery Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India

Abstract

The aim of the study was to determine the optimum dietary protein requirement in the diets of stunted fingerlings of rohu
in grow-out stage. Stunted rohu (Labeo rohita) fingerlings (5 g average weight) were stocked in manured cement
cisterns, with 80 ± 2 cm water column and fed formulated diet having 20% (T1), 25% (T2) and 30% (T3) protein in
triplicate. Fishes stocked in three manured cisterns without supplementary feed served as control (T0). Water quality
parameters viz., temperature, pH, dissolved oxygen, carbon dioxide and alkalinity recorded in different treatments did
not differ significantly. The final average net weight recorded in T0, TI, T2 and T3 were 128.39 g, 141.81 g, 178.29 g and
148.61 g respectively, after a rearing period of 120 days. The growth of fish was significantly (p<0.05) higher in 25% protein
(T2) diet than in the other treatments. The carcass proximate composition of rohu did not show any significant difference
between treatments and the control. The results indicated that the diet containing 25% crude protein was optimum in terms
of weight gain (g), specific growth rate (SGR) (% day-1) and feed conversion ratio (FCR) for stunted fingerlings of rohu
during grow- out stage in the presence of natural food.

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Author Biographies

  • R V Kumar, Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
    Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
  • K S Ramesh, Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
    Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
  • Prakash Patil, Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
    Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
  • B T Naveen Kumar, Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
    Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
  • Joseph K Manissery, Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India
    Department of Aquaculture, College of Fisheries, Mangalore - 575 002, Karnataka, India

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Issue

Vol. 58 No. 4 (2011)

Section

Articles

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How to Cite

Kumar, R. V., Ramesh, K. S., Patil, P., Kumar, B. T. N., & Manissery, J. K. (2012). Dietary protein requirement of stunted fingerlings of rohu, Labeo rohita (Hamilton) during grow-out stage. Indian Journal of Fisheries, 58(4), 49-53. https://epubs.icar.org.in/index.php/IJF/article/view/13760