Multiple stocking for enhancing survival, production and marketable yield structure of Macrobrachium rosenbergii (de Man)


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Authors

  • B Madhusoodana Kurup Aquaculture laboratory, School of Industrial Fisheries, Cochin University of Science and Technology, Kochi - 682 016, India ABSTRACT
  • K Ranjeet Aquaculture laboratory, School of Industrial Fisheries, Cochin University of Science and Technology, Kochi - 682 016, India ABSTRACT

Abstract

Production performance of Macrobrachium rosenbergii from 12 polders having either a single or multistage stocking in nursery systems were compared against those without any nursery phase. High survival and better mean weight was recorded in prawns reared in polders incorporated with a definite nursery phase than those without. The survival rate of prawns among the three treatments varied from 38.92% (without nursery phase-T1) to 63.31% (with two separate nursery phase-T3). Mean net production varied from 169.4 (T1) to 744.5 Kg/
ha/8 months (T3). Percentage representation of various terminal male and female morphotypes was relatively high in experimental system. Marketableyield structure in three  treatments was diverse with a predominance of undersized
prawns (< 50 g) in T1 and T2 (26% and 22% respectively), while the high weight group (>120 g) was more in T3 (32%). Incorporation of a two stage stocking in nursery systems in the farming of M. rosenbergii was found as an essential management strategy for the enhancement of survival rate in
natural grow-outs and reciprocally increasing the production and marketable yield structure. This innovative farming strategy was also found to be very effective in reducing the intra-specific growth inhibition and agnostic behaviour developing among the population commensurate with the growth of prawns. Incorporation of nurseries are found as an integral part of polder based farming of M.rosenbergii in Kuttanad for its technical viability and economical feasibility

Author Biographies

  • B Madhusoodana Kurup, Aquaculture laboratory, School of Industrial Fisheries, Cochin University of Science and Technology, Kochi - 682 016, India ABSTRACT
    Aquaculture laboratory, School of Industrial Fisheries,
    Cochin University of Science and Technology, Kochi - 682 016, India
    ABSTRACT
  • K Ranjeet, Aquaculture laboratory, School of Industrial Fisheries, Cochin University of Science and Technology, Kochi - 682 016, India ABSTRACT
    Aquaculture laboratory, School of Industrial Fisheries,
    Cochin University of Science and Technology, Kochi - 682 016, India
    ABSTRACT

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Issue

Vol. 52 No. 1 (2005)

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Articles

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How to Cite

Kurup, B. M., & Ranjeet, K. (2011). Multiple stocking for enhancing survival, production and marketable yield structure of Macrobrachium rosenbergii (de Man). Indian Journal of Fisheries, 52(1), 37-46. https://epubs.icar.org.in/index.php/IJF/article/view/6992