Effects of Dietary Grape Seed Proanthocyanidins on Growth Performance, Some Serum Biochemical Parameters and Body Composition of Tilapia (Oreochromis Niloticus) Fingerlings

Abstract

The present study was performed with tilapia (Oreochromis niloticus) to evaluate the effects of diet supplementation with grape seed proanthocyanidins (GSPs) on fish growth performance, some serum parameters and body composition. Three hundred tilapia fingerlings with the initial average body weight of 8.25±0.07 g were randomly divided into five treatment groups with four replicates in each group and 15 fish in each replicate. The dietary GSPs levels of five treatment groups were 0 (control group), 200, 400, 600, and 800 mg/kg, respectively. The trial period was 49 days. Growth performance parameters were significantly improved by GSPs supplementation (P<0.05), while survival rates were similar among all groups (P>0.05). Serum parameter results showed that activities of aminotransferase aspartate in 200 and 400 mg/kg GSPs groups and alanine aminotransferase in 400 mg/kg GSPs group were lowered significantly (P<0.05). Levels of triglyceride and total cholesterol (except 200 mg/kg GSPs group) were significantly lowered, while lysozyme activity and albumin level were significantly higher in fish of GSPs supplemented groups, independently from the level of supplementation. The highest crude protein level and lowest crude lipid level were found in fish of all GSPs supplemented groups, while levels of moisture and ash in fish of all groups were similar (P>0.05). The results indicated that dietary 200 mg/kg GSPs could exert beneficial effects on growth and body composition of tilapia fingerlings, and ameliorate serum biochemistry parameters related to health status.

Effect of Polyphenols Supplemented Canola Meal Based Diet on Growth Performance, Nutrient Digestibility and Antioxidant Activity of Common Carp (Cyprinus Carpio Linnaeus, 1758) Fingerlings

“…According to the results of the present study, growth performance of common carp in terms of FCR and weight gain was significantly improved at 400 mg kg -1 level of polyphenols in canola meal based diet. Our findings are in accordance with the results reported by Zhai et al (2014) who noted lowest FCR (1.31) and improved growth performance in Nile tilapia fed diets supplemented with the antioxidant, grape seed proanthocyanidins (GSP) at levels of 400 and 600 mg kg -1 .…”

Ferulic acid: A natural compound as an efficient feed additive for GIFT (Oreochromis niloticus)

“…Lots of AST and ALT would be emitted into the blood when liver function is damaged. Therefore, serum AST and ALT are used as important indicators to reflect the liver function of the fish (Zhai, Lu, & Chen, ). In our study, serum AST and ALT activities were decreased with the increasing dietary FA levels, indicating that a better trend occurred in the liver of the tilapia.…”

Semisynthetic ferulic acid derivative: an efficient feed additive for Genetically Improved Farmed Tilapia (Oreochromis niloticus )

“…When liver function is damaged, much ALT and AST would be emitted into the blood. As a result, ALT and AST are two commonly measured enzymes and/or sensitive indicators of hepatocellular damage (Zhai, Lu & Chen ). In the present study, lower serum TG, TCHO and LDLC, and higher HDLC levels were observed in FA‐ or FA derivative‐supplemented fish when compared to unsupplemented ones.…”