TABLE OF CONTENTS Pages Symposium 1 - the National Sea ...

Table 1. Summary of Test Results for each treatment Average of two replicates of,
weight gained, calculated food consumed and Feed Conversion Ratios
Treatments
Ave Weight Duncan’s Feeding
Temp. °C Feeding Level Gain (g) Groupings g/fish FCR
26 Satiation 441.9 A 631 1.43
32 Satiation 408.8 A B 637 1.56
29 Satiation 405.8 A B 621 1.53
29 87 % 396.5 A B 528 1.33
26 87 % 392.6 B 497 1.27
32 87 % 363.6 B 527 1.45
29 73 % 290.9 C 391 1.35
32 73 % 279.7 C 393 1.41
26 73 % 278.0 C 360 1.29
26 60 % 205.6 D 275 1.34
32 60 % 203.9 D 293 1.41
29 60 % 200.8 D 268 1.34
Figure 4. Average daily feed consumption over 11-day sampling interval of fish fed to
satiation (averaged over the two replicates) for the three temperature treatments.
Daily feed consumption (g/day)
7
6
5
4
3
2
1
0
0 20 40 60 80 100 120 140
Days
If the average growth is plotted as a function of time, some interesting observations that
are important to the following discussion can be made. Since the 60 %- and 73 %-of -
satiation feeding treatments resulted in such poor growth results, only the satiation and 87
% of satiation growth trends are shown in Figure 5. Each data point represents the
average size of the fish, plotted at the mid-point of the 5-week time interval. Note that as
the fish grow, the temperature associated with the maximum growth rate is declining, and
the growth rate for all treatments in the final 5-week period declines precipitously. The
temperature corresponding to maximum growth shifts form 32 °C to 29 °C approximately
10
26 deg C
29 deg C
32 deg C