Comparison of Growth Rate, Feed Intake and Feed Cost of Mud Crab, Scylla paramamosian and S. olivacea Fattening
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Abstract
The objectives of this study were to compare the growth, feed intake and feed cost of mud crab fattening under hatchery conditions. Two treatments used in the study were: 1) fattening of mud crab species Scylla paramamosian and 2) species S. olivacea, with 15 replicates per treatment, at 20 days. The results showed that S. paramamosain had an average percentage of body weight gain (11.15±2.54%) and specific growth rate (0.70±0.15%/day) higher than S. olivacea (9.05±2.55% and 0.57±0.15%/day, respectively). However, both crab species exhibited similar daily feeding rates, averaging 2.95±0.54 and 2.71±0.59% of body weight/day for S. Paramamosain and S. Olivacea, respectively. The average feed cost for cultivating both crab species did not significantly differ, ranging from 149.35 to 159.80 baht/kg. From the research, the cultivation of S. Paramamosain resulted in higher weight gain compared to S. Olivacea, highlighting the significance of crab species in influencing growth outcomes. This finding emphasizes the importance of considering crab species as a crucial factor in the economic aspects of crab cultivation, aiming for higher production yields.
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