Evaluation of the effects of repeated fecal collection by manual stripping on the plasma cortisol levels, TNF-α gene expression, and digestibility and availability of nutrients from hydrolyzed poultry and egg meal by rainbow trout, Oncorhynchus mykiss (Walbaum)

Stone, David A.; Gaylord, T. Gibson; Johansen, Katherine A.; Overturf, Ken; Sealey, Wendy M.; Hardy, Ronald W.

doi:10.1016/j.aquaculture.2008.01.003

Cited by 34 publications

(20 citation statements)

References 31 publications

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“…Plasma levels of cortisol in stressed koi were similar to plasma cortisol levels reported for rainbow trout (Stone & Gibson 2008) and carp (Tilak & Veerniah 2007) in stressed conditions. Average baseline faecal cortisol levels in the present study were similar across days, suggesting limited variation in the basal cortisol levels in unstressed koi.…”

Section: Discussionsupporting

confidence: 83%

Noninvasive assessment of nitrate-induced stress in koi Cyprinus carpio L. by faecal cortisol measurement

Lupica

Turner

2010

Aquaculture Research

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This study determined effects of nitrate (NO3−)‐induced stress on faecal cortisol levels in koi (Cyprinus carpio). NO3− was presented in two formats: (1) bulk increase followed by dilution to assess cortisol response and recovery and (2) bulk increase followed by incremental increases to assess cortisol response limit. Fish were maintained group‐wise in treatment and control aquaria (n=6 per group), and 0.5 g L−1 NO3− (as NaNO3) was added to the water. Faecal samples were collected daily and blood samples were taken pretreatment and 72‐h posttreatment and were assayed for cortisol via ELISA. NO3− increased plasma and faecal cortisol 4.4‐fold and 3.9‐fold respectively. Plasma cortisol was not measured further. After a 74% NO3− decrease by dilution, faecal cortisol decreased to baseline within 24 h, and restimulation by NO3− (1.0 g L−1) elevated faecal cortisol to maximal study levels. In a separate experiment, exposure to 0.4 g L−1 NO3− increased faecal cortisol 6.9‐fold. However, three additional 0.4 g L−1 NO3− increments across 9 days did not further increase cortisol. This study demonstrates that faecal cortisol measurement in fish via an ELISA can be useful as an indicator of NO3−‐induced stress in the aquatic environment.

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Section: Discussionsupporting

confidence: 83%

Noninvasive assessment of nitrate-induced stress in koi Cyprinus carpio L. by faecal cortisol measurement

Lupica

Turner

2010

Aquaculture Research

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“…Molecular tools have been increasingly utilized in aquaculture research to complement existing husbandry techniques and to examine the responses of fish to culture stress and environmental changes (Stone et al, 2008;Panserat and Kaushik, 2010). Molecular technology (gene expression of insulin-like growth factors IGF-I and II) has been used as the most promising molecular marker to date as a rapid indicator of growth in teleost fish (Picha et al, 2008) and to evaluate the efficacy of diets for commercial purpose within very short time.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of nucleotide related products on growth, blood chemistry, oxidative stress and growth factor gene expression of juvenile red sea bream, Pagrus major

et al. 2016

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“…Prior to stripping the ventral surface of the fish was carefully washed and dried, and the fish was stripped by gently squeezing the fish along the ventral line from about midway between the pectoral fin and the vent in the direction of the vent as described elsewhere (Austreng ; Ringø ; Stone et al . ).The faecal samples were collected in a basin with several holes in one end for the removal of excess water from the sample. The sample was then immediately transferred to 50 mL Nalgene containers and flash‐frozen in liquid nitrogen before storing at −80 °C.…”

Section: Methodsmentioning

confidence: 97%

Alternative dietary protein sources for Atlantic salmon (Salmo salarL.) effect on intestinal microbiota, intestinal and liver histology and growth

Hartviksen

Vecino

Ringø³

et al. 2014

Aquacult Nutr

117

101

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The present study has addressed the issue of dietary alterations on gut microbiota in fish by investigating modulation of the allochthonous and autochthonous bacterial gut community of Atlantic salmon following feeding with pea protein concentrate, soy protein concentrate, extracted sunflower, poultry by-product and feather meal. The results revealed that total allochthonous and total autochthonous bacteria isolated from the distal intestine (DI) were affected by dietary modulations. Total autochthonous bacteria in proximal intestine remained unaffected. Corynebacteriaceae dominated the allochthonous bacteria and Lactobacillaceae dominated the autochthonous bacteria community in proximal and DI indicating that the most abundant groups are not shifted by alternative proteins. Some variations were observed between the bacterial communities as result of dietary manipulations. Alternative protein sources resulted in no severe signs of enteritis. Vacuolization of the liver was unaffected by diet. Furthermore, addition of plant materials significantly affected production of acetic acid. Weight of pyloric-, proximal-and DI was influenced by diet, especially feather meal. Growth performance was significantly affected by inclusion of feather meal to the diet. In conclusion the results showed that pea protein concentrate and poultry by-products are suitable protein replacements for Atlantic salmon and that soy protein concentrate is a potential candidate.

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Evaluation of the effects of repeated fecal collection by manual stripping on the plasma cortisol levels, TNF-α gene expression, and digestibility and availability of nutrients from hydrolyzed poultry and egg meal by rainbow trout, Oncorhynchus mykiss (Walbaum)

Cited by 34 publications

References 31 publications

Noninvasive assessment of nitrate-induced stress in koi Cyprinus carpio L. by faecal cortisol measurement

Noninvasive assessment of nitrate-induced stress in koi Cyprinus carpio L. by faecal cortisol measurement

Efficacy of nucleotide related products on growth, blood chemistry, oxidative stress and growth factor gene expression of juvenile red sea bream, Pagrus major

Alternative dietary protein sources for Atlantic salmon (Salmo salarL.) effect on intestinal microbiota, intestinal and liver histology and growth

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