Can smolting be assessed by food intake in steelhead trout, Oncorhynchus mykiss (Walbaum)?

摘要

Salraonid smolts under cultivation must often be able to tolerate abrupt transfer from freshwater (FW) to seawater (SW) Traditionally, sraolt readiness for SW transfer has been estimated using terminal methods. In view of the increasing regard for animal welfare it would be desirable to develop a reliable, non-lethal method for assessing smolt readiness in hatcheries and for research.