Fin Erosion in Farmed Fish

Ellis, Tim; Oidtmann, Birgit; St‐Hilaire, Sophie; Turnbull, James; North, BP; MacIntyre, CM; Nikolaidis, J; Kestin, SC; Knowles, TG; Hoyle, I

doi:10.1002/9780470697610.ch9

Cited by 46 publications

(62 citation statements)

References 97 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fish aggregate in small area during feeding and this is the time when the incidence of fin damage is highest (3,6,15). Our findings agree with previous research that lower feed rations increase erosion of the dorsal and caudal fins of rainbow and brown trout (16,17) and that feed restriction causes fin damage (erosion) in small steelhead trout and Atlantic salmon (15,18).…”

Section: Discussionsupporting

confidence: 83%

“…Although extensively referred to, it cannot be assumed that the level of fin damage is proportional to higher rearing densities (3). The regression analysis showed that SD was not a significant predictor in every examined fin model (Table 4 -Table 10).…”

Section: Discussionmentioning

confidence: 98%

“…There is a significant body of experimental research which identified that the main factors affecting fin damage are feeding practices, water quality, stocking density and routine handling, not excluding the bacterial infections (3,6,7,8,9). However, despite the experimental approach, there are few research reports that determine the important factors having effect on fin damage and fish welfare under different commercial production systems (5,10).…”

Section: Introductionmentioning

confidence: 99%

“…The fin damage phenomenon has been studied for many decades, because fish with damaged fins are usually declared as less valuable by the consumers and the fishing public (2). Fin damage is considered as an operational welfare indicator that is increasingly gaining attention (3,4) and represents one of the key welfare outcomes (5). The ubiquitous presence of fin damage results with a growing interest in understanding it's the etiology and the factors that increase or reduce fin damage in farmed rainbow trout (1).…”

Section: Introductionmentioning

confidence: 99%

“…As fin damage represents a continuous process (3,12), we merged the fin damage data per fin from the two different categories (< 30g and > 100g) and performed the analysis separately for every fin. The results were considered statistically significant at p < .05…”

mentioning

confidence: 99%

See 4 more Smart Citations

Factors Affecting Fin Damage of Farmed Rainbow Trout

Cvetkovikj

Radeski

Blazhekovikj-Dimovska

et al. 2015

Macedonian Veterinary Review

View full text Add to dashboard Cite

The aims of this study were to determine the influence of the factors affecting fin damage under different rainbow trout production systems and to compare the findings with the known experimental reports. The study was based on a questionnaire that included information about the main factors i.e. oxygen level in exit water, water temperature, stocking density, daily feed ration, number of meals and grading frequency on seven rainbow trout farms. Standard multiple regression analysis, based on a previously published fin damage dataset, was used to assess the relationship between the level of fin damage per fin and the factors. Daily feed ration received the strongest weight in the model for the caudal, anal and both pectoral fins, whereas number of meals received the strongest weight in the model for both pelvic fins. Grading frequency received the strongest weight only in the dorsal fin model. Lower levels of daily feed ration and number of meals combined with higher water temperature increased the level of fin damage, whereas stocking density had no effect. The results conform to the experimental research on fin damage in rainbow trout. The research model contributes to the overall assessment of fish welfare and the regression analysis used in this study could be used on rainbow trout farms to evaluate the effect of the main factors on the level of fin damage.

show abstract