Effect of dietary vitamin C on the growth performance, antioxidant ability and innate immunity of juvenile yellow catfish (Pelteobagrus fulvidracoRichardson)

Abstract

A 12-week feeding trial was conducted to evaluate the effects of dietary vitamin C on growth performance, antioxidant status and innate immune responses in juvenile yellow catfish, Pelteobagrus fulvidraco. Six isonitrogenous and isolipidic diets (44% crude protein and 7% lipid) were formulated to contain six graded dietary vitamin C (ascorbate-2-poly-phosphate, ROVIMIX â STAY-C â 35) levels ranging from 1.9 to 316.0 mg kg À1 diet. The results of present study indicated that fish fed the lowest vitamin C diet had lower weight gain (WG) and specific growth rate (SGR) than those fed the diets supplemented vitamin C. WG and SGR did significantly increase with dietary vitamin C levels increasing from 1.9 to 156.5 mg kg À1 . However, no significant increase was observed with further dietary vitamin C levels increasing from 156.5 to 316 mg kg À1 . Survival, protein efficiency ratio and feed efficiency were not significantly affected by the dietary vitamin C levels. The activities of serum superoxide dismutase, catalase and glutathione peroxidase significantly increased when dietary vitamin C levels increased from 1.9 to 156.5 mg kg À1 , fish fed the lowest vitamin C diet had higher serum malondialdehyde content than those fed the diets supplemented with vitamin C. Fish fed the diet containing 156.5 mg kg À1 vitamin C had the highest lysozyme, total complement activity, phagocytosis index and respiratory burst of head kidney among all treatments. The challenge test with Aeromonas hydrophila indicated that lower cumulative survival was observed in fish fed the lowest vitamin C diet. Analysis by broken-line regression of SGR and lysozyme activity indicated that the dietary vitamin C requirement of juvenile yellow catfish was estimated to be 114.5 and 102.5 mg kg À1 diet, respectively.

Vitamin C supplementation to optimize growth, health and stress resistance in aquatic animals

“…Recently, yellow catfish ( Pelteobagrus fulvidraco Richardson) fed the diets supplemented with vitamin C had higher SOD, CAT and GPX activities than those fed vitamin C‐deficient diet (Liang et al . ). Similar studies demonstrated that dietary vitamin C has a positive effect on antioxidant capacity of Siberian sturgeon (Xie et al .…”

“…; Lin & Shiau ,b; Kim & Kang ; Liang et al . ), mucosal immune response (Roosta et al . ), haematology (Shahkar et al .…”

“…; Liang et al . ), even though its exact mechanism has not been demonstrated. Vitamin C also promotes beneficial effects on serum bactericidal activity, phagocytic activity, antibody levels and lysozyme activity (Hardie et al .…”

Effects of dietary vitamin C on growth, gonad development and antioxidant ability of on-growing gibel carp (Carassius auratus gibelio var. CAS III)

“…Some studies have shown that dietary vitamin C could improve the antioxidant capacities in Pacific abalone Haliotis discus hannai Ino (Wu, Wang, Xu, Zhang, & Mai, 2014) and red sea bream Pagrus major (Gao et al, 2013). A similar study in yellow catfish Pelteobagrus fulvidraco suggested that the activities of serum superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX) significantly increased when dietary L-ascorbic acid levels increased from 1.9 to 156.5 mg/ kg (Liang, Li, Hou, Qiu, & Zhou, 2015). Chen et al (2015) also reported that vitamin C supplementation significantly increased CAT activity, reduced glutathione content and total antioxidant capacity (T-AOC) in the liver and muscle of largemouth bass Micropterus salmoides.…”

Effects of different levels of dietary folic acid on the growth performance, muscle composition, immune response and antioxidant capacity of freshwater prawn, Macrobrachium rosenbergii

“…However, in recent years, several nutritional requirements have been reported about this crustacean such as shrimp and prawn including some vitamins requirements such as vitamin C (Vc) and E (Cavalli et al, 2001(Cavalli et al, , 2003Sealey and Gatlin, 2002;Liang et al, 2015;Wang and Huang, 2015;Chen et al, 2015). Furthermore, there is no information about antioxidant effect and serum biochemistry parameters of folic acid on M. rosenbergii which are important factors affecting prawn's health.…”