Study on the Growth Performance of Mud Crab (Scylla olivacea) Fed with Different Wet Feeds
Journal Title: International Journal for Modern Trends in Science and Technology - Year 2025, Vol 11, Issue 06
Abstract
This study evaluated the effects of three fresh bivalve-based diets on the growth performance, molting frequency, and feed utilization efficiency of the mud crab Scylla olivacea under controlled conditions. Juvenile crabs with an average initial weight of approximately 300 g were fed adductor muscle tissue from Mytella strigata (Group I), Perna viridis (Group II), or Meretrix casta (Group III) over a 12-week period. Each treatment was conducted in triplicate using 500 L fibre-reinforced plastic tanks. Crabs were fed twice daily at 15% of their body weight. Growth was assessed through weight gain (WG), specific growth rate (SGR), and molting percentage, while feed efficiency was evaluated using feed conversion ratio (FCR). Results revealed that crabs fed Mytella strigata and Perna viridis exhibited significantly higher growth, with WG of 243.1 g and 236.5 g, SGR of 0.66% and 0.65%/day, and molting rates of 92%, respectively. In contrast, the Meretrix casta group showed reduced growth (WG: 165.0 g; SGR: 0.48%/day) and lower molting frequency (79%). The most efficient feed utilization (lowest FCR: 2.97) was observed in the Mytella strigata group. All treatments recorded 100% survival. These findings suggest that Mytella strigata and Perna viridis are superior natural diets for enhancing the growth and molting of S. olivacea, with Mytella strigata offering the best feed efficiency under the tested conditions.
Authors and Affiliations
Lakshmi Narayanan, Vasanthan Koothan, Leo Luricson, Santhosh Chandrakandan, Keerthika Ganesan, Annadurai Duraisamy, Ayyaru Gopalakrishnan & Ashok Kumar
Keywords
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- EP ID EP769415
- DOI https://doi.org/10.5281/zenodo.15698388
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Study on the Growth Performance of Mud Crab (Scylla olivacea) Fed with Different Wet Feeds
This study evaluated the effects of three fresh bivalve-based diets on the growth performance, molting frequency, and feed utilization efficiency of the mud crab Scylla olivacea under controlled conditions. Juvenile crab...