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Economic analysis of monosex culture of giant freshwater prawn ( Macrobrachium rosenbergii De Man): a case study
Author(s) -
Mohanakumaran Nair C,
Salin K R,
Raju M S,
Sebastian Mathew
Publication year - 2006
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2006.01521.x
Subject(s) - macrobrachium rosenbergii , biology , stocking , prawn , zoology , fishery , productivity , completely randomized design , economic analysis , feed conversion ratio , body weight , veterinary medicine , medicine , agricultural economics , economics , macroeconomics , endocrinology
All‐male monosex culture of Macrobrachium rosenbergii (De Man) has emerged as a popular practice in India, especially in the state of Andhra Pradesh. A study was conducted to compare the economics of all‐male, mixed and all‐female culture in 15 adjacent, rectangular ponds of 4000 m 2 each by stocking juveniles previously reared in a nursery for 60 days. The experiment was conducted using a completely randomized design with three treatments; T 1 (all male), T 2 (mixed) and T 3 (all female), and five replicates for a period of 5 months after the nursery phase. Statistical analysis showed highly significant ( P <0.01) differences among the three types of culture. The cost of production was estimated and the economic feasibility of the culture methods was evaluated by cost‐return and partial budgeting analysis. The average weight, productivity and specific growth rate were the highest for all male culture, being 80.92±2.41 g, 1532 kg ha −1 and 1.97±0.02 respectively. All‐female culture registered significantly higher survival (89.16±0.77%) and the best apparent feed conversion ratio of 1.26±0.02. The economic analysis revealed that all‐male monosex culture of M. rosenbergii was 63.13% and 60.20% more profitable than mixed and all‐female cultures respectively.