Mean ± SE of body weight at the initiation of the experiment and at its conclusion of Phase I and Phase II in the Experiment 1 and Experiment 2, along with coefficients of variation (CV) and differences in coefficients of variation (CV diff.), absolute growth rate (AGR).

Means within a column in each experiment followed by different letters were significantly different (P < 0.05). Phase I: Day 0 –Day 40 for Experiment 1; Day 0 –Day 42 for Experiment 2; mean water temperature was about 18°C for both experiments. Phase II: Day 41 –Day 150 for Experiment 1 with a mean water temperature of 26.4°C; Day43 –Day 126 for Experiment 2 with a mean water temperature of 21.9°C.