About 11,500 of the stocked fish were recorded at mid-recording
and 22,000 at harvest (Table 3), with a mean survival rate of 70% at
harvest. The recorded fish were in average 168 and 247 days, respectively, at mid-recording and harvest (Table 4). The total test periods
(communal rearing) were, generally, about twice as long as the
periods in which families were reared separately. The harvest weights
varied greatly between batches and generations due to different
family production and test environments, water temperature and
About 11,500 of the stocked fish were recorded at mid-recording
and 22,000 at harvest (Table 3), with a mean survival rate of 70% at
harvest. The recorded fish were in average 168 and 247 days, respectively, at mid-recording and harvest (Table 4). The total test periods
(communal rearing) were, generally, about twice as long as the
periods in which families were reared separately. The harvest weights
varied greatly between batches and generations due to different
family production and test environments, water temperature and
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