Effects of dietary lipid sources on growth performance, lipid metabolism and antioxidant status of juvenile Russian sturgeonAcipenser gueldenstaedtii

Abstract

Six isonitrogenous and isoenergetic diets were used to test the influence of lipid source on growth performance, antioxidant status and lipid metabolism of juvenile Russian sturgeon, Acipenser gueldenstaedtii. Each diet was supplemented with 90 g kg À1 of lipid from each of six sources including fish oil (FO), beef tallow (BT), sunflower oil (SO), linseed oil (LO) and equal combinations of FO + SO + BT (FSB) or LO + SO + BT (LSB). After 56 days, fish fed LSB demonstrated highest weight gain, specific growth rate and lowest hepatosomatic index among all groups. The n-6 polyunsaturated fatty acids (PUFAs) in the whole fish were highest in the SO group, and n-3 PUFAs were highest in fish fed LO. The fish fed FO contained highest n-3 highly unsaturated fatty acids. Triglyceride in the serum of fish fed LSB was lowest, but was not significantly different from that in the SO group. Triglyceride in the serum of fish fed FO and BT was highest among all groups. Lipase, malate dehydrogenase and lipoprotein lipase activities were highest in fish fed LSB. Serum malondialdehyde in fish fed LSB was significantly lower than in fish fed FO or SO, but no significant differences were found among fish fed LSB, BT, LO or FSB. Fish fed LSB showed higher catalase activity and total antioxidant capacity than fish fed FO or FSB. This study indicates that linseed, sunflower oil and BT mixed oil are a suitable lipid source and can benefit growth performance and antioxidation in juvenile sturgeon.

Effect of dietary DHA/EPA ratio on the early development, antioxidant response and lipid metabolism in larvae of Siberia sturgeon (Acipenser baerii, Brandt)

“…Overdose LC‐n‐3 HUFA could enhance oxidative stress and cell apoptosis by producing massive reactive oxygen species (ROS) (Ji, Li, & Liu, ; Todorčević et al, ). Li et al () reported that SOD and MDA in the Russian sturgeon juveniles fed fish oil diet were the highest in all groups when DHA+EPA level in fish fed oil diet was 15.0 g/kg diet. However, in the present study, uptrend CAT activities and stable MDA, SOD and T‐AOC levels with higher dietary DHA/EPA ratio in visceral mass of Siberian sturgeon also indicated homeostasis of lipid metabolism fed high DHA diet in larval stage.…”

Effect of different dietary lipid sources on growth performance and nutrient utilization of + Nile tilapia ( Oreochromis niloticus ) fingerlings

“…While the partial replacement of FO with VOs did not affect growth and feed utilization in some fish species [14,37], in other species the total replacement of dietary FO with VOs significantly impacted negatively on growth and fillet quality resulting in growth retardation, abdominal and hepatic fat deposition [22,29]. Studies on Catla catla fingerlings [38], Rohu carp Labeo rohita [39], sea bass Dicentrachus babrax [5], juvenile African catfish Clarias gariepinus [17], largemouth bass Micropterus salmoides [9], Russian sturgeon Acipenser gueldenstaedtii [8] and large yellow croaker [29] showed comparable growth performance of fish fed FO-supplemented diet to fish fed 100% VOs (SO, GO, PO, SFO, poultry fat) or blend of VOs.…”

“…The success of any commercial aquaculture requires the provision of a balance mix of feed containing nutrients in the right proportion [5]. Of these nutrients, protein and lipid play essential roles as sources of protein, energy and essential fatty acid required for optimum fish growth [6][7][8]. These EFAs play vital roles in maintaining the structure and function of cell membranes [9].…”

“…Nogales et al report that plant oils are readily available and have lower prices compared to FO [13]. Plant oils have been widely used in the feeding of several fish species such as turbot [14], Gilthead sea bream [15], Japanese sea bass Lateolabrax japonicas [16], sea bass Dicentrachus labrax [5], largemouth bass Micropterus salmoides [9], African catfish Clarias gariepinus [17], and Russian sturgeon Acipenser gueldenstaedtii [8], with effects ranging from optimum response to deleterious effects.…”

The effect of fish and rapeseed oils on growth performance, egg fatty acid composition and offspring quality of sterlet sturgeon (Acipenser ruthenus)

“…In the present study, FO + VO diet resulted in the highest average weight, SGR, BWI, ADG and CF, whereas VO diet showed the lowest. In this regard, in the study ofLi et al (2017), juvenile Russian sturgeon (Acipenser gueldenstaedtii) fed equal combinations of linseed oil, sunflower oil and beef tallow resulted in highest WG and SGR among all groups (fish oil, linseed oil, sunflower oil, beef tallow, and equal combinations of fish oil, sunflower oil and beef tallow). Similarly,Gao and Chen (2004) reported that the highest growth performance results in juvenile Amur sturgeon (Acipenser schrenckii) were obtained with diets containing oil mixtures (fish oil: soya bean oil: lard = 1:1.2:0.8) or fish oil, while fish fed diets containing sunflower oil or lard performed to the contrary.…”