Exercise and Structure Improve Juvenile Chinook Salmon Rearing Performance

This experiment evaluated the use of an exercise routine and vertically-sus-pended structure during juvenile landlocked fall Chinook salmon (Oncorhynchus tshawytscha; mean ± SE, initial weight 1.47 0.03 g, total length 56.4 0.4 mm) rearing. Four treatments were used: 1) no nor vertically-suspended structure, 2) 3) 4) structure. Water velocities in tanks without 12 cm/s, where-as consisted seven days at cm/s followed by 18 cm/s. The was array consisting four aluminum angles. Total tank gain percent significantly greater after 50 subjected to compared three other treatments. Gain also receiving with or neither Feed conversion ratio improved all There significant differences for individual fish weight, length, specific growth rate, condition factor among any end experiment. These results indicate that both may be beneficial rearing salmon.