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The Effects of Different Carotenoid Sources on Skin Pigmentation of Goldfish (Carassius auratus)

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Title: The Effects of Different Carotenoid Sources on Skin Pigmentation of Goldfish (Carassius auratus)
Authors: Yeşilayer, Nihat
Aral, Orhan
Karsli, Zafer
Öz, Meryem
Karaçuha, Ali
show 1 moreYağci, Feraye
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Keywords: goldfish
pigmentation
Oleoresin paprika
Gammarus spp.
astaxanthin
show 2 morecanthaxanthin
colorimetric analysis

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LC Subject Headings: Fish culture--Israel--Periodicals.
Fish culture--Periodicals.
Aquaculture--Israel--Periodicals.
Aquaculture--Periodicals.
Issue Date: 2011
Publisher: Israeli Journal of Aquaculture - BAMIGDEH
Citation: Nihat Yeşilayer, Orhan Aral, Zafer Karsli, Meryem Öz, Ali Karaçuha, Feraye Yağci (2011). The Effects of Different Carotenoid Sources on Skin Pigmentation of Goldfish (Carassius auratus) . The Israeli Journal of Aquaculture - Bamidgeh, 63, 9 pp.
Series/Report no.: The Israeli Journal of Aquaculture - Bamidgeh
Abstract: The aim of this study was to investigate the effect of different carotenoid sources on goldfish (Carassius auratus) skin pigmentation. The value of goldfish depends on the intensity of the skin color. In the red variety of goldfish, an orange-red hue is desirable. Juvenile goldfish were fed one of five diets for five months to determine the effects of carotenoids on skin pigmentation, growth, feed efficiency, and survival: (1) astaxanthin (carophyll pink at 75 mg/kg), (2) canthaxanthin (carophyll red at 75 mg/kg), (3) Gammarus spp. (75 mg/kg), (4) Oleoresin paprika (180 mg/kg), and (5) an unsupplemented control. Growth and feed efficiency did not significantly differ among groups. Initial and final samples of head skin were measured by colorimetric analysis for lightness (L*), redness (a*), yellowness (b*), hue (Hºab), and chroma (Cab*). The best red color (a* and Hºab) was obtained with the astaxanthin, canthaxanthin, and paprika diets.
Pages/Duration: 9 pages
URI/DOI: http://hdl.handle.net/10524/36293
ISSN: 0792-156X
Appears in Collections:IJA Volume 63, 2011



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