Accelerated recovery of Atlantic salmon (Salmo salar) from effects of crowding by swimming

The Effects of Low-Speed Swimming following Exhaustive Exercise on Metabolic Recovery and Swimming Performance in Brook Trout (Salvelinus fontinalis)

“…Our results for plasma lactate are more ahgned with the findings of Meyer and Cook (1996) and Powell and Nowak (2003), who found that forced swimming following exercise/confinement did not facilitate recovery of this metabolite. Recently, Veiseth et al (2006) found that swimming improved the clearance rates of plasma lactate, but this occurred only at the fasted speed (70 cm s"'; ~1 BL s~') and after at least 6 h of recovery. Suski et al (2007) found that swimming aided metabolic recovery at 1 h after exhaustive exercise in largemouth bass but not at 2 h. Therefore, it is possible that the 2-h (experiment 2A; Table 1) and 3-h (experiment 2B; Table 2) periods used in this study were not sufficient to fully impact restoration of hydromineral balance and lactate dynamics in brook trout.…”

“…Farrell et al (2001) also noted some metabolic benefits when saltwater coho salmon {Onco-rhynchus kisutch) were allowed to swim following gill net capture. Similarly, Veiseth et al (2006) showed benefits of lowspeed swimming on cortisol and plasma lactate dynamics of Atlantic salmon {Salmo salar) following a crowding Stressor. Despite these findings, the relationship between postexercise aerobic swimming and metabolic recovery in fish has provided mixed results.…”

The Effect of AQUI‐S® Sedation on Primary, Secondary, and Tertiary Stress Responses during Salmon Smolt, Salmo salar L., Transport and Transfer to Sea

“…The release of cortisol into the blood is a primary stress response in fish, and it is established that major physiological roles of cortisol are regulation of hydromineral balance and energy metabolism in fish. Therefore, changes in plasma osmolality, chloride, magnesium, and lactate are all features of the secondary stress response (Veiseth et al 2006). An initial increase in lactate was observed in the unsedated group compared with the sedated group, which was most likely because of the increased physical activity during on‐ and off‐loading.…”

Capture induced stress and live storage of Atlantic cod (Gadus morhua) caught by trawl: Consequences for the flesh quality

“…These factors may vary significantly from batch to batch, both for fish captured in the wild as well as farmed fish. In the initial stages (harvesting and slaughter), fish experience various types and degrees of physiological stress (Poli et al, 2005;Veiseth et al, 2006;Erikson, 2008;Gatica et al, 2010). This may lead to low muscle pH, a shortening of the pre-rigour period, increased gaping, and potentially reduced bleeding.…”