Effect of dietary vitamins C and E fortification on lipid metabolism in red sea bream Pagrus major and black sea bream Acanthopagrus schlegeli

Abstract

To determine the effect of vitamins C and E on lipid metabolism and interactions between them, L‐ascorbyl‐2‐monophosphate‐Mg (APM) and α‐tocopherol acetate (TA) were fortified to a commercially based diet and fed to 0‐year red sea bream Pagrus major and 1‐year black sea bream Acanthopagrus schlegeli. Fortification of APM and TA, respectively, increased ascorbate (ASC) and α‐tocopherol (α‐Toc) contents in the organs. In addition, APM fortification increased α‐Toc accumulation in both fishes, although TA fortification did not significantly affect the ASC content. Fortification of APM caused a depression in lipid accumulation in the intraperitoneal fat body and liver in red sea bream. Furthermore, a decrease in the serum thiobarbituric acid value in black sea bream and a reduction of the adipocyte diameter in the APM‐fortified groups of both fishes were observed. However, fortification of TA did not affect these parameters as significantly as did fortification of APM. The shortest recovery time to air‐dipping was found in the APM + TA‐fortified group, followed by the APM‐fortified group in red sea bream. The results implied an effect of vitamin C on lipid metabolism, and acceleration of vitamin E absorption and/or suppression of vitamin E degradation.

Dietary vitamin C requirement and its effects on tissue antioxidant capacity of juvenile largemouth bass, Micropterus salmoides

“…In the present study, there was an improvement tendency of VSI and HSI with increasing dietary vitamin C supply, but the differences were not significant. Similar with the results in black sea bream Acanthopagrus schlegeli (Ji et al, 2003), vitamin C fortification also decreased lipid accumulation in the mesenterium and liver in largemouth bass. In contradiction to the report of Falahatkar et al (2006), in which carcass moisture and protein contents were little changed, and lipid content was markedly impacted by dietary vitamin C levels in great sturgeon Huso huso, whole-body moisture and protein contents were markedly changed, while whole-body lipid content was poorly affected in response to ASA supplementation in this study.…”

Influence of Ulva meal on growth, feed utilization, and body composition of juvenile Nile tilapia (Oreochromis niloticus) at two levels of dietary lipid

“…The effective substance provided by algae is not known, but protein, fiber, minerals, and trace elements need to be considered. The observed benefits may be explained by the high vitamin C content of Ulva meal (Ortiz et al 2006;García-Casal et al 2007), which effects lipid metabolism and may result in alteration of body composition and nutrient deposition in fish (Miyasaki et al 1995;Nakagawa 1997;Nakagawa et al 2000;Ji et al 2003). The effects of dietary algal meals on carcass lipids can be contradictory; whereas some reports suggest an elevation of total lipids Diler et al 2007), others suggest a decrease Azaza et al 2008).…”

“…Ulva species have a good vitamin and mineral profile and are especially rich in ascorbic acid (Ortiz et al 2006;García-Casal et al 2007). Vitamin C promotes lipid metabolism, which may result in the alteration of body composition and nutrient deposition in fish, and thus may reduce carcass lipid and increase protein levels (Miyasaki et al 1995;Ji et al 2003).…”

Palmitato de ascorbil e acetato de tocoferol como antioxidantes metabólicos em larvas de dourado

“…O'Keefe (2001) descreve que a vitamina C é responsável pela hidrólise da carnitina em peixes. Seguindo a mesma hipótese, Ji et al (2003) No entanto, a altura da cabeça demonstrou ser mais sensível às concentrações de vitamina C na larvicultura, visto que apresentou resposta aos tratamentos com 5 dias de alimentação e, com 15 dias, respondeu à dose maior de palmitato de ascorbil. As cabeças das larvas de dourado apresentam rápido desenvolvimento inicial, superam o crescimento e o peso (Nakatani et al, 2001) e podem estar mais susceptíveis ao efeito dos tratamentos nos primeiros dias de vida.…”

“…Os mais utilizados são as vitaminas C e E (Ji et al, 2003). Seus efeitos no metabolismo dos animais são muito explorados, principalmente em peixes na fase de reprodução e pós-larvas (Tocher et al, 2002).…”