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Research Article: Evaluation of Yarrowia lipolytica lipase 2 on growth performance, digestive enzyme activity and nutritional components of Russian sturgeon (Acipenser gueldenstaedtii)
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W.Q. Chen   , C.C. Zheng , Z.H. Jin , Z. Ye , J.W. Wu , S.Q. Qian , Z.J. Wu , C. Sun , Y. Sun , H. Fei * |
| Zhejiang Sci-Tech univrsity , feihui@zju.edu.cn |
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Abstract: (2183 Views) |
| The effects of Yarrowia lipolytica lipase 2 (YLL2) on growth performance, digestive enzyme activity and muscle nutritional components of Russian sturgeon (Acipenser gueldenstaedtii) were evaluated in a 56-day feeding experiment. Four experimental groups of fish with mean weight of 4.465 g were used in the study: Control group (0-control), Group 1 (1.0 g/kg YLL2), Group 2 (1.5 g/kg YLL2) and Group 3 (2.0 g/kg YLL2), respectively, with three repetitions. Fish fed diets with YLL2 at 1.0 g/kg showed the highest growth compared with that of the other groups (p<0.05). For nutrient apparent, docosahexenoic acid (DHA) and eicosapentenoic acid (EPA) concentrations in fish muscle of group which fed with 1.0 g/kg YLL2 increased 5.05% and 7.45% respectively, compared with that of control group (p<0.05). Considering the digestive enzyme activity, lipase and protease activity in liver, spleen and intestine of G1 fish was also significantly enhanced compared with that of control group (p<0.05). While, significant increase of amylase activity in intestine was only observed in fish treated with 2.0 g/kg YLL2. The present results suggested that YLL2 (1.0 g/kg) could be used as potential diet additives for aquaculture Russian sturgeon. |
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| Keywords: Yarrowia lipolytica lipase, Sturgeon, Nutritional components, Growth performance, Digestibility |
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Full-Text [PDF 483 kb]
(772 Downloads)
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Type of Study: Orginal research papers |
Subject:
aquaculture
Received: 2019/05/31 | Accepted: 2020/01/7 | Published: 2021/03/20
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