研究论文:溶脂耶氏菌脂肪酶2对俄罗斯鲟鱼生长性能、消化酶活性及营养成分的影响

IF 0.8 4区农林科学 Q3 FISHERIES

Iranian Journal of Fisheries Sciences Pub Date : 2021-03-10 DOI:10.22092/IJFS.2021.123835

Wen-qi Chen, Cheng-cai Zheng, Zhihong Jin, Zifeng Ye, Jun-wei Wu, Qian Shichao, Wu Zhenju, Cong Sun, Yuqiang Sun, Hui Fei

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引用次数: 3

摘要

在为期56天的饲养试验中，评价了解脂亚罗华脂酶2（YLL2）对俄罗斯鲟（Acipenser gueldenstaedtii）生长性能、消化酶活性和肌肉营养成分的影响。研究中使用了四个实验组的鱼，平均重量为4.465g：对照组（0-对照）、第1组（1.0g/kg YLL2）、第2组（1.5g/kg YLL1）和第3组（2.0g/kg YLL2中），分别重复三次。与其他组相比，添加1.0 g/kg YLL2的鱼的生长最高（p<0.05）。在营养表观方面，添加1.0 mg/kg YLL2组的鱼肌肉中二十二碳六烯酸（DHA）和二十碳五烯酸（EPA）浓度分别比对照组增加了5.05%和7.45%（p<0.05），与对照组相比，G1鱼肝脏、脾脏和肠道中的脂肪酶和蛋白酶活性也显著提高（p<0.05），而只有2.0g/kg YLL2处理的鱼肠道淀粉酶活性显著提高。结果表明，YLL2（1.0g/kg）可作为养殖俄罗斯鲟的潜在日粮添加剂。

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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)

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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来源期刊

Iranian Journal of Fisheries Sciences FISHERIES-

CiteScore

2.30

自引率

11.10%

发文量

审稿时长

3 months

期刊介绍： 1- Living various species (contains animals and vegetal species) in various aquatic ecosystems. 2- Health and diseases of aquatic species. 3- Determining the stocks and specific time and location for catching and reliable exploitation for sustainable development. 4- Methods of propagation and culture of high value aquatic resources. 5- Aquatic stock assessment and the methods of restocking the high value species and suggestion for rate, areas and the time for releasing fish and other aquatic organisms fries. 6- Pollutant agents and their effects to the environments of aquatic species. 7- Feed and feeding in aquatic organisms. 8- Fish processing and producing new products. 9- The economic and social aspects of fisheries.