Ascorbic acid biosynthesis in Amazonian fishes

Fracalossi, Débora Machado; Allen, Mary E.; Yuyama, Lúcia Kiyoko Ozaki; Oftedal, Olav T.

doi:10.1016/s0044-8486(00)00455-5

Cited by 98 publications

(57 citation statements)

References 38 publications

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“…A necessidade de suplementar adequadamente a dieta do tambaqui com ácido ascórbico, decorre principalmente do fato de essa espécie, assim como outras, ser incapaz de sintetizar esta vitamina (Fracalossi et al, 2001), pela falta da enzima L-gulonolactona oxidase, que catalisa o último passo da produção de ascorbato (Touhata et al, 1995).…”

Section: Resultsunclassified

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Efeito da vitamina C no ganho de peso e em parâmetros hematológicos de tambaqui

Chagas

Val

2003

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito da suplementação dietária com ácido L-ascórbico (vitamina C) no ganho de peso e em parâmetros hematológicos de juvenis de tambaqui, Colossoma macropomum. Após dez semanas, em que foram alimentados com dietas contendo 0, 100 e 500 mg de ácido L-ascórbico por kg de ração, os peixes foram capturados e imediatamente anestesiados para a coleta de sangue da veia caudal e determinação dos parâmetros hematológicos. Animais alimentados com maiores níveis de ascorbato mostraram pesos corpóreos maiores, melhores taxas de conversão alimentar e sobrevivência. A asência de ácido L-ascórbico na ração, além de causar redução nos valores de hematócrito e no número de eritrócitos, que caracteriza anemia, provocou aumento no volume corpuscular médio, na hemoglobina corpuscular média e na concentração de hemoglobina corpuscular média. Esses resultados revelam a importância do ácido L-ascórbico na dieta dos juvenis de tambaqui. O nível de 100 mg de ácido L-ascórbico/kg de ração é adequado, garantindo bom ganho de peso e manutenção da homeostase do organismo.Termos para indexação: Colossoma macropomum, suplemento alimentar, nutrição animal, piscicultura. Effect of vitamin C on weight and hematology of tambaquiAbstract -The objective of this work was to estimate the effect of L-ascorbic acid (vitamin C) dietary supplementation on the body weight and on the hematology of juveniles tambaqui, Colossoma macropomum. After ten weeks receiving diets containing 0, 100 and 500 mg of L-ascorbic acid per kg of food, the fish were netted from the tanks, immediately anesthetized and blood was withdrawn from caudal vein for analysis of hematological parameters. Animals fed on higher ascorbate levels showed higher final body weight, better feed conversion rate and survival. Also, the L-ascorbic acid free-diet resulted in reduction of hematocrit and red blood cell count, characterizing anemia, and an increase of mean cell volume, mean cellular hemoglobin and mean cellular hemoglobin concentration. These results show the importance of L-ascorbic acid supplementation in the diet of juveniles tambaqui. The level of 100 mg of L-ascorbic acid/kg diet is adequate, guaranteeing better body weight gain and maintenance of organic homeostasis.

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Section: Resultsunclassified

“…A importância da suplementação de ácido ascórbico na dieta de animais cultivados deve-se à incapacidade dos peixes teleósteos em sintetizar esta vitamina por causa da ausência da enzima gulonolactona oxidase (Touhata et al, 1995); o tambaqui está incluído neste grupo (Fracalossi et al, 2001).…”

Section: Introductionunclassified

Efeito da vitamina C no ganho de peso e em parâmetros hematológicos de tambaqui

Chagas

Val

2003

Pesq. agropec. bras.

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“…Most teleosts are unable to synthesize AA due to the lack of L-gulonolactone oxidase (Fracalossi et al, 2001). Therefore, an exogenous source of AA is required in fish diets.…”

Section: Introductionmentioning

confidence: 99%

Effect of Dietary Vitamin C and and #914;-Glucan to Alleviate the Toxic Effect of Copper Sulphate in Tilapia Fish

El-Keredy¹,

El-Shenway²,

Diab³

et al. 2017

AJVS

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“…Kaushik et al (1998) observed an interaction of vitamin C level and protein source of protein utilization in salmonids. Also, some studies indicate that Vit E exerts its role on growth though preventing muscle atrophy and damages to collagen tissues (Fracalossi et al, 2001;Montero et al, 1999;Wang et al, 2003;Chen et al, 2004). Also, it was demonstrated that Vit E affects fish growth by controlling or reducing metabolic costs resulting in reduced tissue damage during stress.…”

Section: Discussionmentioning

confidence: 99%

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Khara¹,

Sayyadborani²,

SayyadBorani³

2016

Turk. J. Fish. Aquat. Sci.

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We examined the effects of different dietary levels of ascorbic acid (vitamin C) and α-tocopherol (vitamin E) and their combinations on growth, survival; and some haematological and immunological parameters of Caspian brown trout, Salmo trutta caspius juveniles. The experiment was designed as 15 experimental treatments and one control group. 480 fish (35±5.5 g) were fed by experimental diets containing different levels of Vit C and E and control diet separately for a period of 2 months. According to the results, Vit C and E improved survival and growth parameters including specific growth rate (SGR), percent weight gain (WG) and biomass. The highest values of these parameters obtained in T8 ) + Vit C (300 mg.kg -1 ) and T9 (Vit E (40 mg.kg -1 ) + Vit C (300 mg.kg -1 ). The lowest FCR obtained in T8. The haematological parameters including red blood cells (RBCs), white blood cells (WBCs), haematocrit (%Hct) and haemoglobin (Hb) were higher in vitamin treated groups than control group with highest values in T8. In T13 ), WBC values were higher compared to other experimental groups. The immunological parameters (lysozyme activity, Immunoglobulin (IgM) and total immunoglobulin (TIg)) were found to be higher in vitamin supplemented groups than in control group with highest values in T12 (Vit C (300 mg.kg-1). In conclusion, our results show that a combination of 30 mg.kg diet -1 Vit E+ 300 mg.kg -1 Vit C or 40 mg.kg -1 Vit E + 300 mg.kg -1 Vit C could be a good option for obtaining appropriate growth and survival in Caspian brown trout juveniles.Caspian brown trout.

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Ascorbic acid biosynthesis in Amazonian fishes

Cited by 98 publications

References 38 publications

Efeito da vitamina C no ganho de peso e em parâmetros hematológicos de tambaqui

Efeito da vitamina C no ganho de peso e em parâmetros hematológicos de tambaqui

Effect of Dietary Vitamin C and and #914;-Glucan to Alleviate the Toxic Effect of Copper Sulphate in Tilapia Fish

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