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Relative bioavailability of zinc in supplemental inorganic and organic sources for Nile tilapia Oreochromis niloticus fingerlings

2005; Wiley; Volume: 11; Issue: 4 Linguagem: Inglês

10.1111/j.1365-2095.2005.00352.x

1365-2095

M.V. DO CARMO E, Luiz Edivaldo Pezzato, Margarida Maria Barros, Pedro de Magalhães Padilha,

Fish Biology and Ecology Studies

Aquaculture NutritionVolume 11, Issue 4 p. 273-281 Relative bioavailability of zinc in supplemental inorganic and organic sources for Nile tilapia Oreochromis niloticus fingerlings M.V. DO CARMO E SÁ, M.V. DO CARMO E SÁ AquaNutri, College of Veterinary Medicine and Animal ScienceSearch for more papers by this authorL.E. PEZZATO, L.E. PEZZATO Animal Nutrition and Breeding Department, College of Veterinary Medicine and Animal ScienceSearch for more papers by this authorM.M. BARROS, M.M. BARROS Animal Nutrition and Breeding Department, College of Veterinary Medicine and Animal ScienceSearch for more papers by this authorP. DE MAGALHÃES PADILHA, P. DE MAGALHÃES PADILHA Chemistry Department, Institute of Biosciences, São Paulo State University, SP, BrazilSearch for more papers by this author M.V. DO CARMO E SÁ, M.V. DO CARMO E SÁ AquaNutri, College of Veterinary Medicine and Animal ScienceSearch for more papers by this authorL.E. PEZZATO, L.E. PEZZATO Animal Nutrition and Breeding Department, College of Veterinary Medicine and Animal ScienceSearch for more papers by this authorM.M. BARROS, M.M. BARROS Animal Nutrition and Breeding Department, College of Veterinary Medicine and Animal ScienceSearch for more papers by this authorP. DE MAGALHÃES PADILHA, P. DE MAGALHÃES PADILHA Chemistry Department, Institute of Biosciences, São Paulo State University, SP, BrazilSearch for more papers by this author First published: 11 July 2005 https://doi.org/10.1111/j.1365-2095.2005.00352.xCitations: 41 Marcelo Vinícius do Carmo e Sá, Instituto de Ciências do Mar (LABOMAR/UFC). Av. da Abolição, 3207 – Meireles – Fortaleza, Ceará, Brazil. CEP: 60.165-081. E.mail: carmoesa_marcelo@yahoo.com.br Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract A 90-day feeding experiment was conducted with sex reversed Nile tilapia (Oreochromis niloticus) fingerlings fed purified or practical diets supplemented with different zinc sources to evaluate fish growth performance and zinc and iron retention in fish bones, fillets, liver, skin and eyes. The relative bioavailability value (RBV) of zinc in the supplemental sources tested was also calculated. Fish were fed with isonitrogenous and isoenergetic purified or practical diets supplemented with 150 mg Zn kg−1, as zinc sulphate monohydrate (ZnSO4), zinc oxide (ZnO) or zinc amino acid complex (Zn-AA). The feeding trial was conducted in 30, 50 L aquaria where four 0.66 ± 0.01 g (mean ± SD) fingerlings were initially stocked. No significant differences were observed for any growth performance variables (P > 0.05). In practical diets, only ZnSO4 and ZnO presented bone zinc retention similar to that for the standard zinc source. Zinc concentration in the bone of fish fed practical diet supplemented with Zn-AA (171 ± 3.62 μg g−1) was significantly lower than that verified for the practical diets supplemented with the standard zinc source (200 ± 17.7 μg g−1) or with ZnSO4 (204 ± 19.9 μg g−1). Assuming the concentration of zinc in bones as the response criterion, the supplemental zinc RBV from ZnSO4 (105%) was higher than the RBV for Zn-AA (95.1%) or ZnO (94.9%). Iron concentration in the bones of animals fed the non-zinc-supplemented purified diet was significantly higher than that observed for purified diet supplemented with Zn-AA (P < 0,05). The results of the present work allowed us to conclude that ZnSO4 in relation to ZnO or Zn-AA was the supplemental zinc source with higher zinc bioavailability to Nile tilapia. Citing Literature Volume11, Issue4August 2005Pages 273-281 RelatedInformation