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Effects of Dietary Quercetin on the Growth Performance, Digestive Enzymes and Antioxidant potential in the Hepatopancreas of Tilapia (Oreochromis niloticus)
|Title:||Effects of Dietary Quercetin on the Growth Performance, Digestive Enzymes and Antioxidant potential in the Hepatopancreas of Tilapia (Oreochromis niloticus)|
|LC Subject Headings:||Fish culture--Israel.|
|Abstract:||This trial was conducted to investigate the effects of Quercetin on the growth performance, activities of digestive enzymes, and antioxidant potential in the hepatopancreas of tilapia. Four hundred tilapia (Oreochromis niloticus), were randomly divided into five treatment groups with four replicates in each group/ 20 fish per replicate. The dietary Quercetin levels of the five treatment groups were 0, 200, 400, 800, and 1600 mg/kg, respectively. The trial period was 49 days. Rates of weight gain, special growth, feed conversion, and protein efficiency ratio of the Quercetin diet groups improved significantly (P<0.05) compared with the control group. No significant difference in survival rates were found between the control group and all Quercetin diet groups (P>0.05). The activity of protease, lipase, and amylase, in the stomach and intestine significantly increased when the dietary Quercetin level was above 400 mg/kg. The malondialdehyde level, and total antioxidant capacity in the hepatopancreas of Quercetin diet groups decreased significantly while catalase activity of Quercetin diet groups (apart from the group fed 1600 mg/kg Quercetin) increased significantly (P<0.05) with no significant differences between all Quercetin groups. Superoxide dismutase activity was not affected by Quercetin supplementation. The results of the present study suggested that Quercetin supplementation in a tilapia diet could have beneficial effects on digestive enzyme activity, antioxidant potential in the hepatopancreas, and improve growth performance.|
|Appears in Collections:||Volume 66, 2014|
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