Effects of feeding regime on susceptibility of Atlantic salmon (Salmo salar) to cold water vibriosis

Damsgård, Børge; Sørum, Unn; Ugelstad, I.; Eliassen, Robert A.; Mortensen, Atle

doi:10.1016/j.aquaculture.2004.05.037

Cited by 27 publications

(27 citation statements)

References 19 publications

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“…Feed deprivation also reduced mortalities in natural outbreaks of E. ictaluri in channel catfish and Vibrio salmonicida in Atlantic salmon (Damsgård et al . ; Wise et al . ).…”

Section: Discussionmentioning

confidence: 99%

Diets containing corn naturally contaminated with deoxynivalenol reduces the susceptibility of rainbow trout (Oncorhynchus mykiss)to experimentalFlavobacterium psychrophiluminfection

et al. 2014

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The objective of this study was to determine if deoxynivalenol (DON) exposure alters the susceptibility of rainbow trout to bacterial coldwater disease caused by Flavobacterium psychrophilum. Rainbow trout were fed a nutritionally complete diet containing corn that was naturally contaminated with DON at a desired concentration of <0.5 (control and pair‐fed treatments), 4 or 6 ppm over 7 weeks to apparent satiation. After 4 weeks, fish were infected by intraperitoneal injection with F. psychrophilum (3.03x106 CFU mL−1) via intraperitoneal injection and monitored for morbidity and mortality. A significant linear reduction in feed intake was associated with increasing dietary levels of DON contamination over the initial 4 weeks. There was a significant reduction (P < 0.05) in cumulative per cent mortality in DON‐fed groups (4.1 ppm, 11%; 5.9 ppm, 7%) in comparison to control (46%) and pair‐fed (25%) groups at 21 days post infection. Mortality of trout pair‐fed the control diet was also significantly lower (P < 0.05) than the control group fed to apparent satiation. A replicate trial using genetically similar fish and the same experimental design produced similar results. These results suggest that DON exposure and restricted feed intake provided a protective effect for rainbow trout infected with F. psychrophilum.

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“…Feed deprivation also reduced mortalities in natural outbreaks of E. ictaluri in channel catfish and Vibrio salmonicida in Atlantic salmon (Damsgård et al . ; Wise et al . ).…”

Section: Discussionmentioning

confidence: 99%

Diets containing corn naturally contaminated with deoxynivalenol reduces the susceptibility of rainbow trout (Oncorhynchus mykiss)to experimentalFlavobacterium psychrophiluminfection

et al. 2014

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“…For example, 20 days after exposure to infectious pancreatic necrosis, a viral disease, Atlantic salmon show reduced appetite and growth (Damsgård et al 1998). Bacterial diseases can also cause reduced appetite, for example in Nile tilapia (Oreochromis niloticus) suffering from a piscirickettsiosis-like condition (Mauel et al 2007) and in Atlantic salmon suffering from vibriosis (Damsgård et al 2004). Rainbow trout may cease feeding about 3 weeks after infection with the haemoflagellate parasite Cryptobia salmositica (Chin et al 2004).…”

Section: Feeding By Diseased Fishmentioning

confidence: 99%

Appetite and Feed Intake

Jobling

Alanärä

Noble

et al. 2012

Aquaculture and Behavior

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This chapter first describes changes in appetite that occur over different time scales in wild fish and the physiological mechanisms that generate these changes. It then gives an account of how food intake and appetite change as young fish develop and mature and the effects of genetic variation and differential experience on these processes. The costs of sustaining a high rate of food intake are then described, as is the way in which these are balanced against the obvious benefits of gaining a good supply of nutrients. The benefits gained by regular appetite cycles are also considered. The implications of natural appetite patterns for fish culture are then discussed, including problems arising from underfeeding and overfeeding and those resulting from failure to match feed delivery to current appetite. Underfeeding causes slow, uneven growth and high levels of aggression, as well as stress and mortality, while overfeeding may result in inefficient production and adverse environmental impact. Potential solutions to such problems are discussed, including the use of on-demand feeding systems that match delivery to appetite. The effects of domestication and captive rearing on feed intake are then considered, together with possible ways of mitigating such effects in fish that are cultured for release.

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“…In some cases, starving fish drastically lowers the mortality rate of the disease (Damsgå rd et al 2004). Little is known about the basic mechanisms behind this starvation effect.…”

Section: Feedmentioning

confidence: 99%

“…The way in which diseases affect the wellbeing and stress level of fish is still poorly understood (Damsgå rd et al 2004). An apparently healthy fish in an adequate environment is not sufficient documentation of good fish welfare.…”

Section: Laboratory Animals (2006) 40mentioning

confidence: 99%

Guidelines for health and welfare monitoring of fish used in research

Johansen

Needham²,

Colquhoun

et al. 2006

Lab Anim

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SummaryThe aim of this paper is to provide background material necessary for the development of international guidelines for the health and welfare monitoring of fish used in research. It provides an overview of present guidelines and discusses why more detailed and speciesspecific guidelines are needed. A major issue within fish research is to document the situation today and point out areas where improvements are needed.

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Effects of feeding regime on susceptibility of Atlantic salmon (Salmo salar) to cold water vibriosis

Cited by 27 publications

References 19 publications

Diets containing corn naturally contaminated with deoxynivalenol reduces the susceptibility of rainbow trout (Oncorhynchus mykiss)to experimentalFlavobacterium psychrophiluminfection

Diets containing corn naturally contaminated with deoxynivalenol reduces the susceptibility of rainbow trout (Oncorhynchus mykiss)to experimentalFlavobacterium psychrophiluminfection

Appetite and Feed Intake

Guidelines for health and welfare monitoring of fish used in research

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