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Journal of Fisheries and Aquatic Science
  Year: 2008 | Volume: 3 | Issue: 1 | Page No.: 97-101
DOI: 10.3923/jfas.2008.97.101
 
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Fattening of the Blue Swimming Crab Portunus pelagicus (Linnaeus)

P. Soundarapandian and S. Dominic Arul Raja

Abstract:
In the present study, two types of experiments were conducted. First experiment was designed to know the optimum salinity and second experiment was to know the suitable live feeds for fattening. They were kept in different salinities (20, 25, 30 ppt). Weight gain of the crab=s cultured in 30 ppt (58.3 g) was significantly higher than 20 (49.6 g) and 25 ppt (52.3 g) and also the shell hardens in shorter duration (11.6 days). Hence 30 ppt salinity was selected as optimum salinity for further experiment. After knowing the salinity 3 different live feeds viz., oyster, clam, trash fish were offered individually. Fourth feed was offered in combined manner. Proximate analysis was also performed for feeds used in the present study. Weight gain was higher when the water crabs were fed with mixed feed (59.00 g). The shell hardening duration (11.6 days) also shorter when compared to other feeds. From the present study 30 ppt salinity was optimum and mixed feed is suitable feed for fattening of P. pelagicus as evidenced by shorter duration and higher weight gain.
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How to cite this article:

P. Soundarapandian and S. Dominic Arul Raja, 2008. Fattening of the Blue Swimming Crab Portunus pelagicus (Linnaeus). Journal of Fisheries and Aquatic Science, 3: 97-101.

DOI: 10.3923/jfas.2008.97.101

URL: https://scialert.net/abstract/?doi=jfas.2008.97.101

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