2020
DOI: 10.3390/ani10112138
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Skin Pigmentation in Gilthead Seabream (Sparus aurata L.) Fed Conventional and Novel Protein Sources in Diets Deprived of Fish Meal

Abstract: The pattern of yellowish pigmentation of the skin was assessed in gilthead seabream (Sparus aurata) fed for 12 weeks iso-proteic (45%) and iso-lipidic (20%) diets deprived of fish meal and containing either a blend of vegetable protein-rich ingredients or where graded levels of the vegetable protein blend were replaced by insect (Hermetia illucens—10%, 20% or 40%) pupae meal, poultry by-product meal (20%, 30% or 40%), red swamp crayfish meal (10%) and marine microalgae (Tisochrysis lutea and Tetraselmis suecic… Show more

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Cited by 21 publications
(14 citation statements)
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“…Overall, the nature of the administered source, the type and content of the dietary carotenoids affect the magnitude of colour modification with major emphasis given on the correlation between total carotenoid concentration in the feed and yellowish pigmentation of the fish skin [18]. In this regard, Pulcini et al [18] previously published the data on total carotenoid content of the same diets here administered. Briefly, the MA10 had the highest carotenoid concentration, followed by the vegetable control and RCM diets, the insect included diets (H10, H20 and H40), whilst the P40 and H10P30 showed the lowest amounts.…”
Section: Discussionmentioning
confidence: 99%
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“…Overall, the nature of the administered source, the type and content of the dietary carotenoids affect the magnitude of colour modification with major emphasis given on the correlation between total carotenoid concentration in the feed and yellowish pigmentation of the fish skin [18]. In this regard, Pulcini et al [18] previously published the data on total carotenoid content of the same diets here administered. Briefly, the MA10 had the highest carotenoid concentration, followed by the vegetable control and RCM diets, the insect included diets (H10, H20 and H40), whilst the P40 and H10P30 showed the lowest amounts.…”
Section: Discussionmentioning
confidence: 99%
“…Despite the fact that the use of crustaceans as an active colourant has been previously investigated, the information on the use of Procambarus clarkii is limited to the only study performed on Pagrus pagrus by García et al [56]. Overall, the nature of the administered source, the type and content of the dietary carotenoids affect the magnitude of colour modification with major emphasis given on the correlation between total carotenoid concentration in the feed and yellowish pigmentation of the fish skin [18]. In this regard, Pulcini et al [18] previously published the data on total carotenoid content of the same diets here administered.…”
Section: Discussionmentioning
confidence: 99%
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“…It can be argued that due to foraging behaviour, where farm-associated individuals actively chose fish over other prey, the adequate carotenoid content needed for exhibiting iridescent and vivid colour hues is not achieved from the diet, as in case of wild fish having a carotenoid rich diet based on bivalves and other invertebrates. Inclusion of natural carotenoid sources in a low fishmeal diet can improve skin pigmentation of farmed seabream, especially with a mixture of dried marine microalgae and red swamp crayfish meal (Pulcini et al, 2020).…”
Section: External Body Colour and Otolith Appearance Featuresmentioning
confidence: 99%
“…Although quantification of skin chromaticity parameters in fish species can be accurately estimated either in specific fish areas using colorimeters 2 or at the whole animal level using image processing and analysis software 17 , measuring the melanin content or melanophore number and coverage in fish skin has been proven challenging until now. Melanin is insoluble in water and shows an irregular structure creating an obstacle for chemical analysis, particularly quantification 8 .…”
Section: Introductionmentioning
confidence: 99%