Effect of different Dietary Protein Level on Growth of Mud Crab Scylla serrata (Forsskal, 1755) Reared in Bamboo Baskets in Brackish water Pond in Saurashtra of Gujarat state

Author: Olakiya V.V. and Kotiya A.S.

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Abstract

A growth performance of mud crab Scylla serrata was taken up for 60 days, where different dietary protein% levels was prepared with 15%, 25%, 35% and 45%. Experiment was conducted at Fisheries Research & Training Center, Kamdhenu University, Mahuva taluka of Bhavnagar district in order to observe the following attributes: protein feed, growth, survival rate, production and water quality parameters. The crab was reared in bamboo basket (2 × 1 × 1 ft) stocked with 20 number of juveniles crab/ basket with four replicate. Four treatment of different dietary protein% feed was formulated with 15, 25, 35 and 45 and was fed @5% body weight for 60 days, the initial average body weight of juveniles crab was 19.4±1.95g respectively. There was statistically significant differences (P<0.05) among the treatment with mean weight gain (g), ADG, SGR, biomass (kg), FCR, and survival% recorded was 19.46±1.24, 22.4±2.88, 28.9±2.47, 33.78±2.06 and 0.33±0.02, 0.37±0.05, 0.48±0.04, 0.56±0.03 and 4.94±0.11, 5.17±0.21, 5.61±0.15, 5.86±0.10 and 0.34±0.04, 0.44±0.12, 0.15±0.04, 0.66±0.06 and 3.61±0.52, 3.12±0.66, 2.72±0.08, 2.13±0.18 and 43.7±6.2, 52.5±13.23, 57.5±12.5, 62.5±6.45 respectively. Better performance of mud crab Scylla serrata was recorded 45% protein diet followed by 35%, the crab were very active and healthy. Water parameter during the rearing period in all the treatment was conducive. Almost all crab were found hiding under provided hideout during feeding hours and when feed was applied, it start darting for food. Higher yield was obtain from 45% protein formulated feed with compare to all other treatment. Most favored water quality for crab is 20-30 cm turbid with dim light.

Keywords

Crab, bamboo basket, protein diet, growth, survival, production.

Conclusion

From the results of these trials, the prepared formulated diets could be used for mud crab farming and enhance the scope for developing nutritionally balanced feed. The study also reduced the demand for “trash " fish. In the reality of farming, the farmers may not get or use the best quality trash fish for their daily feeding. Variable quality of trash fish is an increasing problem which also implies that nutritional value may be different on a day to day basis. Whereas as selected formulated diets have a more reliable, nutritionally complete feed based on the requirement of the mud crabs. For the research community, these findings will provide some basic formulation and methodology formulated pelleted diets. With which to further additional lines of experimentation for improvement of selected. Therefore, based on the results obtained from the present study it is concluded that the 45% crude protein diet is recommended for best growth of juveniles Scylla serrata. Scylla serrata have enhanced growth performance, feed utilization and healthy flesh quality which shown their potential as aqua feed ingredient.

References

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How to cite this article

Olakiya V. and Kotiya A.S. (2022). Effect of Different Dietary Protein Level on Growth of Mud Crab Scylla Serrata (Forsskal, 1755) Reared in Bamboo Baskets in Brackishwater Pond in Saurashtra region of Gujarat state. Biological Forum – An International Journal, 14(4): 88-100.