Suplementação com vitamina C e E sobre o desenvolvimento e sobrevivência de girinos de rã-touro (Rana catesbeiana Shaw, 1802)

Stéfani, Marta Verardino De; Marcantonio, Adriana Sacioto; Martins, Maurício Laterça

doi:10.1590/s0103-84782001000500021

Cited by 7 publications

(5 citation statements)

References 6 publications

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“…Vitamin C participates in the formation of bone and cartilage, both of which are necessary for proper growth. A lack of vitamin C caused deformations in the tail, bone deformities, haemorrhage, loss of appetite and an increase in the negative effects of stress in studies performed with bullfrogs (Leibovitz et al., ; Stéfani et al., ). However, according to Drouin et al.…”

Section: Introductionmentioning

confidence: 99%

Vitamin C supplementation has no effect on American bullfrog's immune response

Knoop

Dias

França

et al. 2014

Animal Physiology Nutrition

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American bullfrog (Lithobates catesbeianus) is the only species raised in Brazilian commercial frog farms, and the intensive culture of these animals has gained great popularity in Brazil over the past several years. Stress is one of the major obstacles in frog culture. To minimise this problem, the aim of the present study was to investigate the role of added vitamin C in the diet of American bullfrogs as an antistress factor through the assessment of plasma corticosterone, leucocyte levels and macrophage activation in animals raised in confinement. The experimental design was entirely randomised, with six treatments (supplementation of 0, 250, 500, 750, 1000 and 2000 mg of vitamin C/kg of feed) and four replications. The plasma corticosterone level, leucocyte level and macrophage activation were evaluated. It was concluded that vitamin C had no influence on the evaluated parameters due to the possible adaptation of the animals to life in captivity (domestication). The results of this research indicate that farmers should not increase the levels of vitamin C in commercial feeds because this would only enhance production costs.

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Section: Introductionmentioning

confidence: 99%

Vitamin C supplementation has no effect on American bullfrog's immune response

Knoop

Dias

França

et al. 2014

Animal Physiology Nutrition

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“…A vitamina C participa da formação de tecido ósseo e cartilaginoso, sendo, portanto, responsável por melhorias no crescimento. Sua carência, denominada de escorbuto, ocasiona deformações ósseas, hemorragias, falta de apetite, letargia (Stéfani et al, 2001) e deformações na cauda . A suplementação dietética do ácido ascórbico á dieta de girinos visa, principalmente, a redução da mortalidade e deformações estruturais.…”

Section: Vitamina Cunclassified

“…Porém pouco se sabe das exigências para estes animais (De Stéfani et al, 2001). Chagas & Val (2003) relataram que juvenis de tambaqui (Colossoma macropomum) suplementados com 100mg de ácido L-ascórbico apresentaram melhora na conversão alimentar, no ganho de peso e sobrevivência.…”

Section: Vitamina Cunclassified

“…O escorbuto (deficiência de ácido ascórbico), em girinos, tem sido observado pelo aumento na taxa de mortalidade e deformações na estrutura da cauda . Segundo o estudo de De Stéfani et al (2001), a taxa de sobrevivência dos girinos foi significativamente maior no grupo suplementado com 500 mg vit.C kg -1 (62,83%), em relação ao grupo controle (40,48%).…”

Section: Introductionunclassified

“…com ácido ascórbico. Entretanto, estes resultados divergem do estudo deBarros et al(2002) que não encontraram efeitos significativos em parâmetros de desempenho produtivo de tilápias-do-Nilo, suplementadas com diferentes níveis de vitamina C e ferro à dieta.Provavelmente a forma do ácido ascórbico utilizada interferiu nos resultados Stéfani et al (2001),. avaliando os efeitos da suplementação de vitamina C e E sobre a sobrevivência de girinos de rã-touro, observaram que o tratamento com 500 mg/kg de vitamina C conferiu melhores taxas de sobrevivência (62,83%).…”

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Suplementação de vitamina C para girinos de lithobates catesbeianus submetidos à baixa temperatura

Martins¹

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Vitamin C dietary supplementation influence tadpoles of bullfrog Lithobates catesbeianus reared in low water temperature

Navarro

Martins

Pereira

2021

Braz. J. Vet. Res. Anim. Sci.

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Vitamin C supplementation is important for the growth and development of bullfrog tadpoles under optimum water temperature conditions. Therefore, an experiment was carried out to evaluate the effects of vitamin C supplementation on the diet of bullfrog tadpoles at a low temperature. A total of 480 tadpoles with a mean weight of 0.078 g were distributed in 12 aquariums each containing 40 L of water in a closed water recirculation system. The experimental design was entirely randomized with four treatments (0, 150, 300, and 600 mg kg-1 of L-ascorbic acid monophosphate) and three replicates. The productive performance was measured by the weight gain, feed conversion, diet consumption, protein efficiency, carcass yield, hepatosomatic index, viscerosomatic index, visceral fat index, dry matter, and ethereal carcass extract. The water temperature during the experimental period was 21.74 ± 0.43 °C. Vitamin C supplementation did not influence carcass yield and viscerosomatic index. However, there was a quadratic effect of vitamin C supplementation on the weight gain, apparent feed conversion, protein efficiency, visceral fat index, hepatosomatic index, and ethereal carcass extract. Based on these results, bullfrog tadpoles should be supplemented with 600 mg vitamin C kg-1 of the diet when subjected to water temperatures of around 22 °C.

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Suplementação com vitamina C e E sobre o desenvolvimento e sobrevivência de girinos de rã-touro (Rana catesbeiana Shaw, 1802)

Abstract: RESUMO O presente trabalho teve como objetivo avaliar os efeitos da suplementação de vitamina C e E sobre o desenvolvimento

Cited by 7 publications

References 6 publications

Vitamin C supplementation has no effect on American bullfrog's immune response

Vitamin C supplementation has no effect on American bullfrog's immune response

Suplementação de vitamina C para girinos de lithobates catesbeianus submetidos à baixa temperatura

Vitamin C dietary supplementation influence tadpoles of bullfrog Lithobates catesbeianus reared in low water temperature

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