The effects of dietary inclusion faba bean (Vicia faba) on the serum lipid levels and liver function in farmed juvenile beluga (Huso huso)

Authors

Department of Fisheries, Sari Agricultural Sciences and Natural Resources University, Sari-Iran

Abstract

BACKGROUND: Faba bean (Vicia faba) is a rich source of protein and carbohydrates that is used as a vegetable ingredient in diet of livestock, poultry and fish, in many countries. Objectives: This study was conducted to assess the effects of different levels of faba bean on the serum lipid levels and liver function of farmed beluga sturgeon (Huso huso). Methods: 144 juvenile beluga (82.38 ± 0.83 g) were located into 18 oval tanks (300 L) and triplicate groups were fed by experimental diets inclusion 6 levels of faba bean (0, 5, 10, 15, 20 and 25%) for 50 days. At the end of the trial, blood samples were taken from the caudal vein of 54 beluga juveniles and some of biochemical parameters (cholesterol and triglycerides) and liver enzymes such as Alkaline Phosphatase (ALP), Aspartate Aminotransferase (AST), Alanine Aminotransferase (ALT) and Lactate Dehydrogenase (LDH) were investigated. Then nine fish per treatment were sampled to measure Hepatosomatic index (HSI) and liver composition per each treatment. Results: The results showed that by increasing the levels of faba bean in diets ALP, AST and LDH contents were significantly decreased compared to the control treatment (p<0.05). However, the lowest level of ALT (0.76±0.2 U/l) was measured in fish fed with 10% faba bean meal (p<0.05). The moisture and fat contents of liver showed significant difference by increasing the levels of faba bean in diet (p<0.05). No significant differences were shown in cholesterol, triglyceride, HSI, liver protein and liver ash contents (p>0.05). Highly significant positive correlation were observed between total protein, cholesterol, AST, LDH, ALP and liver fat (p<0.01).  Conclusions:  Use of lower levels of faba bean (up to 25%) had no significant effect on serum lipids and no adverse effect on liver function of juvenile beluga.

Keywords


 
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