Iron deficiency symptoms of carp.

Sakamoto, Syuichi; Yone, Yasuo

doi:10.2331/suisan.44.1157

Cited by 37 publications

(29 citation statements)

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“…Esses observaram acréscimo do VGM e CHGM com o aumento dos níveis de ferro proteinato na dieta porém, de forma geral, variações hematológicas indesejávais ocorreram com a inclusão de níveis acima de 4000 mg/kg. Sakamoto & Yone (1978) avaliaram os efeitos hematológicos da ausência e inclusão de 200 mg/kg de ferro em dietas para carpa e observaram diferenças significativas para o VGM e CHGM de 21,16 e 5,60%, respectivamente.…”

Section: Níveis De Vitamina C E Ferro Para Tilápia Do Nilo (Oreochromunclassified

Níveis de vitamina C e ferro para tilápia do nilo (Oreochromis niloticus)

et al. 2002

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RESUMO -Os efeitos de diferentes níveis de vitamina C e ferro no desempenho produtivo e parâmetros fisiológicos da tilápia do Nilo (Oreochromis niloticus) foram avaliados por um período de 73 dias. O delineamento foi inteiramente casualizado, com tratamentos dispostos em esquema fatorial com três níveis de vitamina C (125; 375 e 1115 mg/kg) e três níveis de ferro (30, 90 e 270 mg/kg), mais um tratamento adicional (0 mg/kg de suplementação de vitamina C e ferro), com quatro repetições cada tratamento, totalizando 10 grupos experimentais. Utilizaram-se 240 alevinos revertidos com peso médio inicial de 7,46 ± 0,49 g, distribuídos aleatoriamente em 40 aquários de 250 L, numa lotação de 6 peixes/aquário. Confeccionou-se dieta purificada com 32,0% de proteína bruta e 3300 kcal/kg de energia digestível. A ausência de vitamina C e ferro nas dietas propiciou o aparecimento de anemia microcítica e hipocrômica aos alevinos. A presença dessa vitamina em dosagens elevadas estimulou a liberação de eritrócitos imaturos na corrente sangüínea. Determinou-se, também, que níveis desses acima das exigências nutricionais descritas para a espécie não determinaram efeito detrimental no desempenho produtivo, na produção de proteínas plasmáticas ou nos aspectos morfológicos do fígado.Palavras-chave: Oreochromis niloticus, vitamina C, ferro, hematologia, desempenho produtivo Levels of Vitamin C and Iron for Nile Tilapia (Oreochromis niloticus)ABSTRACT -The effects of different levels of vitamin C and iron on growth performance and physiological parameters on Nile tilapia (Oreochromis niloticus) were evaluated for 73 days. A factorial experiment with three levels of vitamin C (125; 375 e 1115 mg/kg) and three levels of iron (30, 90 e 270 mg/kg), plus an additional treatment (with 0 mg/kg of vitamin C and iron), was considered on a completely randomized design, with four replicates for each experimental group. It was randomly stocked 240 reverted fingerlings, an average weight of 7.46 ± 0.49 g, into 40, 250L, aquaria at a density of 6 fish/aquarium. A albumin-gelatin-diet was formulated to contain 32.0% of crude protein and 3,300 kcal/kg of digestible energy. Fingerlings of Nile tilapia fed diet without supplemental vitamin C and iron developed hypochromic microcytic anemia and the supplemental vitamin C determined the presence of immature erythrocytes on blood. It was also determined that iron serum concentration was influenced by vitamin C and iron supplied on diets, and that levels above to nutritional requirements for the specie did not determined detrimental effect on growth performance, plasmatic protein or morphologic characteristics of liver. IntroduçãoA vitamina C assume importância considerável em razão de ação em vários processos metabólicos. Essa vitamina é considerada essencial para a maioria das espécies de peixes, uma vez que não a sintetizam em função da ausência da enzima L-gulonolactona oxidase para sua formação a partir da glucose (Lovell, 1998). No entanto, o mineral ferro destaca-se, essencialmente, por sua participaç...

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Section: Níveis De Vitamina C E Ferro Para Tilápia Do Nilo (Oreochromunclassified

Níveis de vitamina C e ferro para tilápia do nilo (Oreochromis niloticus)

et al. 2002

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“…Iron is also one of the most essential micronutrients in terms of its effect on the functioning of the immune system and defense against various infections (Beisel 1982;Bhaskaram 1988). Iron deficiency causes immune suppression, growth depression, changes in hematological parameters, susceptibility to diseases, poor food conversion and microcytic anemia in common carp (Tacon 1992;Andersen et al 1996;Kawatsu 1972;Sakamoto and Yone 1978). Iron is thus essential and in excess can be toxic (Salte et al 1994;Andersen et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Nano-Fe as feed additive improves the hematological and immunological parameters of fish, Labeo rohita H.

et al. 2013

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An experiment was conducted to compare the effects of iron oxide nanoparticles (T 1 ) and ferrous sulfate (T 2 ) on Indian major carp, Labeo rohita H. There were significant differences (P \ 0.05) in the final weight of T 1 and T 2 compared with the control. Survival rates were not affected by the dietary treatments. Fish fed a basal diet (control) showed lower (P \ 0.05) iron content in muscle compared to T 1 and T 2 . Furthermore, the highest value (P \ 0.05) of iron content was observed in T 1 . In addition, RBCs and hemoglobin levels were significantly higher in T 1 as compared to other treated groups. Different innate immune parameters such as respiratory burst activity, bactericidal activity and myeloperoxidase activity were higher in nano-Fe-treated diet (T 1 ) as compared to other iron source (T 2 ) and control in 30 days post-feeding. Moreover, nano-Fe appeared to be more effective (P \ 0.05) than ferrous sulfate in increasing muscle iron and hemoglobin contents. Dietary administration of nanoFe did not cause any oxidative damage, but improved antioxidant enzymatic activities (SOD and GSH level) irrespective of different iron sources in the basal diet.

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“…of food (for reviews, see Davis and Gatlin, 1991;Watanabe et al, 1997). There are only a few reports of dietary iron deficiency in fish, and these have focused on defining the nutritional requirements to avoid anaemia and growth retardation in aquaculture (Kawatsu, 1972;Sakamoto and Yone, 1978;Davis and Gatlin, 1991;Watanabe et al, 1997). A precise iron requirement for most fish species, including rainbow trout, remains to be determined.…”

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confidence: 99%