Interactive effects of dietary magnesium and vitamin E on growth performance, body composition, blood parameters and antioxidant status in Japanese seabass (Lateolabrax japonicus) fed oxidized oil

Abstract

A study was conducted to investigate effects and interactions of magnesium (Mg) and vitamin E (VE) on growth performance, body composition, hepatic antioxidant capacity and serum biochemistry parameters of juvenile Japanese seabass Lateolabrax japonicus under oxidative stress condition. Fish (initial average body weight of 6.10 AE 0.20 g) were fed 9 oxidized oil diets supplemented with 3 grade levels of Mg (0, 520 and 1570 mg kg À1 diet) and VE (0, 60 and 200 mg kg À1 diet) for 8 weeks in freshwater. The results showed that diets supplemented 520 mg kg À1 Mg and/or 60 mg kg À1 VE had highest growth and muscle lipid content. There were highest total superoxide dismutase, catalase, glutathione peroxidase activities and lowest malondialdehyde content in liver of fish fed diets supplemented 520 mg kg À1 Mg and/or 60 mg kg À1 VE. Contrary to Mg concentrations, Ca concentrations and Ca/Mg ratio in whole body were inversely related to dietary Mg levels. However, combined deficiency or excess of dietary Mg and VE led to the decrease of hepatic antioxidant capacity, body lipid deposition and growth of Japanese seabass under oxidative stress condition.

Combined or individual effects of dietary magnesium and selenium nanoparticles on growth performance, immunity, blood biochemistry and antioxidant status of Asian seabass ( Lates calcarifer ) reared in freshwater

“…Contrary to our findings, several authors observed that NanoSe supplementation can affect serum cholesterol, LDL and HDL concentrations in common carp (Ashouri et al, ; Saffari et al, ) and rainbow trout (Naderi et al, ). Similar to our results, Zhang et al () reported that supplementation of Mg in the diet had no effect on cholesterol, LDL and HDL concentrations.…”

“…The diet of the NanoMg group was supplemented with 500 mg NanoMg (98% purity, 20 nm particle size; Iranian Nanomaterials Pioneers) per kg diet. This level was selected based on the earlier report (Zhang et al, ) indicating the requirement of Mg (520 mg/kg diet) in Japanese seabass ( Lateolabrax japonicas ) as a marine species reared in freshwater. The combination group (NanoSe + NanoMg) diet was supplemented with 500 mg MgO nanoparticle and 4 mg NanoSe per kg diet.…”

“…The optimal growth performance of cultured fish species requires a balanced diet containing all the essential nutrients, including selenium (Se) and magnesium (Mg) (Han et al, ; Ilham, Siddik, & Fotedar, ; Jaramillo et al, ; Zhang, ).…”

“…The dietary Mg requirements of freshwater fish species range from 0.2 to 0.7 g Mg/kg diet as reported for several fish species (Gatlin et al, ; Lin et al, ; Ogino, Takashima, & Chiou, ; Reigh, Robinson, & Brown, ). However, limited information on the Mg demand of marine fish species reared in freshwater is available (Zhang et al, ).…”

Effects of dietary astaxanthin and vitamin E and their interactions on the growth performance, pigmentation, digestive enzyme activity of kuruma shrimp (Marsupenaeus japonicus )

“…In the present study, the significantly higher crude lipid contents in the Ax 0 × α-Toc 0.2 and Ax 0.6 × α-Toc 0.2 groups illustrated that α-Toc has a limited effect on lipid deposition and excess α-Toc may have a negative interaction on lipid deposition. This result is consistent with the research in Japanese sea bass that showed α-Toc supplementation from 0 to 0.06 g/kg significantly increased muscle lipid and then decreased it at 0.2 g/kg (Zhang et al, 2016).…”