ARS | Publication request: GROWTH AND PHYSIOLOGICAL CHARACTERISTICS OF RAINBOW TROUT REARED IN DIFFERENT CULTURE ENVIRONMENTS

Submitted to: Meeting Abstract
Publication Type: Abstract
Publication Acceptance Date: October 25, 2005
Publication Date: December 19, 2005
Citation: Brazil, B.L., Silverstein, J. 2005. Growth and physiological characteristics of rainbow trout reared in different culture environments. Meeting Abstract, Volume 12.

Technical Abstract: At the National Center for Cool and Cold Water Aquaculture, a rainbow trout (RBT) breeding program for growth was initiated with populations domesticated in single pass or serial reuse culture systems. However, new facilities may require water reuse and recirculation technologies to reduce the volume of freshwater required. Thus, we determined whether genotype by environment interactions (G X E) would require separate breeding programs for flow-through and water reuse environments. During a 4-month growth trial, three strains of RBT were cultured in flow-through or water reuse-culture systems. The results suggest there were no significant strain by environment interactions. In fact, at the end of the study fish reared in the recirculated water were 7% larger (averaging 418g). Additionally, fish serum chemistry profiles where nearly identical between environments, with the exception of cortisol (higher in the recirculating water).