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Table 1 Basic characteristics of pond water and sediment quality during an intensive whiteleg shrimp culture cycle

From: Enhancing ecological-economic efficiency of intensive shrimp farm through in-out nutrient budget and feed conversion ratio

Pond operation Parameters Culture stage Min Max Mean SD
Water Temperature (°C) Pond preparation 30.6 30.8 30.7 0.1
Feeding (1 month after stocking) 29.7 30.6 30.1 0.4
Feeding (2 months after stocking) 29.7 31.6 30.4 0.7
Harvesting 20.6 21.5 21.0 0.3
pH Pond preparation 7.3 8.5
Feeding (1 month after stocking) 7.9 8.6
Feeding (2 months after stocking) 8.6 8.8
Harvesting 9.0 9.1
DO (mg L− 1) Pond preparation
Feeding (1 month after stocking)
Feeding (2 months after stocking) 6.0 7.6 6.5 0.6
Harvesting 9.6 9.9 9.7 0.1
Salinity (ppt) Pond preparation 0.6 0.6 0.6 0.0
Feeding (1 month after stocking) 0.5 0.5 0.5 0.0
Feeding (2 months after stocking) 0.5 0.5 0.5 0.0
Harvesting 0.6 0.6 0.6 0.0
TDS (mg L−1) Pond preparation 654 656 655 0.7
Feeding (1 month after stocking) 552 560 555 3.3
Feeding (2 months after stocking) 528 531 529 1.1
Harvesting 612 614 613 0.8
EC (μScm−1) Pond preparation 1308 1312 1310 1.5
Feeding (1 month after stocking) 1103 1120 1110 6.8
Feeding (2 months after stocking) 1057 1061 1059 1.6
Harvesting 1224 1227 1226 1.1
Sediment OM (g kg−1) Pond preparation 9.1 10.2 9.6 0.5
Feeding (1 month after stocking) 10.8 11.2 11.1 0.2
Feeding (2 months after stocking) 10.3 12.3 11.1 1.0
Harvesting 11.1 12.7 12.7 0.9
pH Pond preparation 6.8 7.6
Feeding (1 month after stocking) 6.8 7.6
Feeding (2 months after stocking) 6.8 7.6
Harvesting 7.4 8.0