- Report
Follow-up of returning migrating salmon
| 2017:456 | Anders Alanärä, Sveriges lantbruksuniversitet, SLU
The sea survival of compensatory reared Atlantic salmon smolt have
decreased over the last 15 years in relation to wild salmon smolt. During
the same period of time, the body size of hatchery smolt have strongly
increased and deviates largely from wild smolt in terms of size and
energetic status.
\u003Cp\u003EThe purpose with this project was to produce a physiologically wild like hatchery reared salmon smolt and to evaluate the effect on sea survival. A physiologically wild like smolt was considered to be about 50 g in size and with body fat content of about 4 %. Hatchery reared one- year old smolt was included in the study because the proportion of one year old smolt have increased dramatically over the last 15 years within the releases from Swedish compensatory rearing programs.\u003C/p\u003E