Effects of Dietary Vitamin C Supplementation on Growth Performance and Tissue Chemical Composition of Silurus Glanis (Linnaeus, 1578)

Abstract

The present study was conducted to quantify the effect of Ascorbic acid (Vitamin C) at the following inclusion levels: 0 mg AA per kg feed (V0), 50 mg AA per kg feed (V1), 100 mg AA per kg feed (V2) and 150 mg AA per kg of feed (V3), on growth performance and feed utilization efficiency of juvenile Silurus glanis, reared in a recirculating aquaculture system. The European catfish, with initial mean body weight of 118.96±0.43g, was fed with 1.8 percentage of their body weight, 3 times per day. After feeding with supplemented diets for 4 weeks, growth performance, feed utilization and health status were assessed. The results of the current study showed that supplementation with Vitamin C at 50 mg AA per kg (V1) of feed had a positive effect over FCR, SGR, PER, comparing with the control group (V0) and the V2 and V3 experimental variants. Thus, it is demonstrated that the appropriate doze of Vitamin C should be established before applying it to intensive aquaculture, in order to obtain high growth performance and a good health condition of fish.

Keywords

• acid ascorbic
• recirculating system
• silurus glanis
• technological performance indicators