Fin condition of fish kept in aquacultural systems

Klíma, Ondřej; Kopp, Radovan; Hadašová, Lenka; Mareš, Jan

doi:10.11118/actaun201361061907

Cited by 8 publications

(9 citation statements)

References 67 publications

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“…In our study, SD was the only factor that did not have an effect on the level of fin damage. This finding conforms to other research that there is no relationship between SD and the level of fin damage (3,6,7,9,32). The normal recommended SD for rainbow trout is 2 -80 kg/m 3 (26).…”

Section: Discussionsupporting

confidence: 78%

“…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%

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Factors Affecting Fin Damage of Farmed Rainbow Trout

Cvetkovikj

Radeski

Blazhekovikj-Dimovska

et al. 2015

Macedonian Veterinary Review

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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.

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Section: Discussionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Factors Affecting Fin Damage of Farmed Rainbow Trout

Cvetkovikj

Radeski

Blazhekovikj-Dimovska

et al. 2015

Macedonian Veterinary Review

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“…In addition to (chronic) stress suboptimal management can result in external morphological damage of the eyes, skin and fins, as well as in deformities and emaciation of fish (Noble et al, 2012;Stien et al, 2013;Noble et al, 2020). Especially fin injuries are common in aquaculture, impacting fish performance and health and are as such generally accepted as indicator for impaired welfare of fish (Latremouille, 2003;Ellis et al, 2008;Noble et al, 2012;Klíma et al, 2013;Stien et al, 2013;Noble et al, 2020). The impact of fin injuries on welfare depends on severity, type, and number of fins injured, as the latter significantly impact swimming ability, increase energy demand, reduce growth, increase susceptibility to infection, and can even result in mortality (Latremouille, 2003;Ellis et al, 2008;Noble et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Scale cortisol is positively correlated to fin injuries in rainbow trout (Oncorhynchus mykiss) reared in commercial flow through systems

Weirup

Schulz

Seibel³

et al. 2021

Aquaculture

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“…We hypothesize that the third dorsal fin was already eroded by the start of the experiment and it may possibly heal and regenerate more rapidly than the other fins. Fish are capable of healing damaged fins and regenerated fins have been shown to have the same shape and size as the original fin of the fish (Atta, Abdel‐karim & Elsheikh ; Klíma, Kopp, Hadašová & Mareš ). By using the same data, Nielsen et al .…”

Section: Discussionmentioning

confidence: 99%

Repeatability of fin length measurements using digital image analysis and studies of fin erosion as indicator of social interactions in Atlantic cod (Gadus morhua)

Nielsen

Olesen

et al. 2015

Aquac Res

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The aims of this study were to examine fin erosion caused by social interactions between Atlantic cod (Gadus morhua) juveniles, and to evaluate the repeatability of recorded fin length using digital image analysis (DIA). Fin length of 2100 juvenile Atlantic cod was analysed using DIA, during a 6 weeks experiment. The lengths of the three dorsal fins and the caudal fin were measured by three different assessors (M, K, B) three times during the experiment. Repeatability was based on a sub set of data from 42 randomly chosen fish. Assessor M measured the length of the fins of the 42 fish three times (M1, M2, M3). M1 and M2 were done on the same day, while M3 was conducted 2 weeks later. Assessor K measured two times with a 2‐year interval, and assessor B measured the fin length only once. The correlations between replicated measurements within assessor were highest for assessor M measured on the same day indicating an effect of memory. Repeatability of fin length ranged from 0.57 to 0.73 for the four fins. Social interaction with respect to fin erosion was studied using data on the four fins from all 2100 fish. ‘Relative fin length’ (fin length/total body length × 100) was calculated to assess fin erosion. Results indicated that all four fins were eroded due to social interactions, but the caudal fin was most severely eroded. In conclusion, DIA can be used to measured fin length but the method could be improved by using chromatic pictures.

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Fin condition of fish kept in aquacultural systems

Abstract: KLÍMA ONDŘEJ, KOPP RADOVAN, HADAŠOVÁ LENKA, MAREŠ JAN: Fin condition of fi sh kept in aquacultural systems.

Cited by 8 publications

References 67 publications

Factors Affecting Fin Damage of Farmed Rainbow Trout

Factors Affecting Fin Damage of Farmed Rainbow Trout

Scale cortisol is positively correlated to fin injuries in rainbow trout (Oncorhynchus mykiss) reared in commercial flow through systems

Repeatability of fin length measurements using digital image analysis and studies of fin erosion as indicator of social interactions in Atlantic cod (Gadus morhua)

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