饲料中添加姜黄素对杂交鲟幼鱼代谢酶、抗氧化和肠道结构的影响
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董凯玥(1998?),女,硕士研究生,从事水产动物营养与饲料研究.E-mail:769762665@qq.com

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S961

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现代农业产业技术体系专项(CARS-46); 中央级公益性科研院所基本科研业务费专项(YFI20220802).


Effect of curcumin addition to feed on metabolic enzymes, antioxidant, and gut structure in hybrid sturgeon (Acipenser baeri♂×Acipenser schrenckii♀)
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    摘要:

    为评价饲料中添加不同水平的姜黄素对杂交鲟(Acipenser baeri♂×Acipenser schrenckii♀)幼鱼生长和形体指标、血清生化、代谢酶活性、抗氧化功能和肠道结构的影响, 在基础饲料中分别添加 0、0.025 g/kg、0.05 g/kg、0.1 g/kg 和 0.2 g/kg 的姜黄素配制成 5 种饲料, 投喂初始体重(16.24±0.11) g 的杂交鲟幼鱼。实验分为 5 组, 每组 3 个重复, 每个重复 20 尾鱼。结果显示: 饲料中添加姜黄素对杂交鲟幼鱼生长没有产生显著影响。血清总胆固醇(TG)含量在姜黄素添加量为 0.2 g/kg 时显著降低(P<0.05)。肝谷丙转氨酶(ALT)活性在 0.05 g/kg 姜黄素组明显降低, 谷草转氨酶 (AST)活性在 0.05 g/kg、0.1 g/kg、0.2 g/kg 添加量时活性显著降低(P<0.05)。十二指肠蛋白酶和淀粉酶分别在 0.05 g/kg 和 0.1 g/kg 姜黄素组活性显著升高(P<0.05)。血清丙二醛(MDA)含量在 0.025 g/kg 时显著降低(P<0.05), 过氧化氢酶(CAT)活性在 0.025 g/kg 时显著高于对照组(P<0.05)。随着姜黄素的添加, 杂交鲟幼鱼肠道结构有所改善。 综上所述, 饲料中添加姜黄素能改善杂交鲟幼鱼的健康状态, 对鱼体具有降脂、护肝、促进消化和提高抗氧化能力等作用, 姜黄素的建议添加量为 0.025~0.05 g/kg。

    Abstract:

    Curcumin is a natural yellow pigment derived from turmeric and tulip rhizome, has been widely used as feed additives to improve the health of cultured animals due to its highly biologically active and functions of anti-inflammatory, antioxidant, and blood lipid-lowering. However, the application of curcumin is rarely studied in sturgeon, which is intensively cultured because of the high value of nutritional and economic. Therefore, to investigate the effect of curcumin on the growth and health of sturgeon, a 6–week feeding trial was conducted using hybrid sturgeon (Acipenser baeri♂×Acipenser schrenckii♀). A total of 300 juvenile hybrid sturgeon with an initial weight of (16.24±0.11) g were assigned to diets containing 0 g/kg, 0.025 g/kg, 0.05 g/kg, 0.1 g/kg and 0.2 g/kg curcumin in triplicated. The results showed that the addition of curcumin in the feed had no significant effect on the growth performance and body composition of juvenile hybrid sturgeon. Curcumin addition significantly decreased serum TG content in the group of 0.2 g/kg curcumin in diets (P<0.05), ALT and AST activities in hybrid sturgeon liver were reduced with the curcumin level increasing, which appeared significant difference with control at the curcumin level at 0.2 g/kg and 0.05 g/kg, respectively (P<0.05). Curcumin significantly improved the activity of protease in duodenum with curcumin level increasing at first, which showed the highest activity at 0.05 g/kg of curcumin supplementation respectively (P<0.05), and then decreased with curcumin further increasing. Curcumin addition improved the activity of α-AMY significantly at 0.1 g/kg of curcumin supplementation respectively (P<0.05), and then decreased. The results of antioxidants showed that serum MDA content decreased significantly in the group of 0.025 g/kg curcumin (P<0.05), in which group serum CAT activity increased significantly (P<0.05). While a significant increase of CAT activity in the liver appeared in the curcumin addition level at 0.05 g/kg (P<0.05). There was no significant difference among the treatments even though decreased MDA content and increased SOD activity appeared in the liver. MDA content, SOD and CAT activities in duodenum showed a similar change pattern with that in serum, however, no significant effect was observed by curcumin addition. Histopathology results of duodenum indicated that curcumin addition in feed could improve the structure of intestine, which showed clear and fewer adherent villi structures. The present study indicated that the appropriate curcumin supplementation in feed was beneficial to the health of hybrid sturgeon, which could improve the antioxidant capacity of the fish, promote the health of liver and intestine, in the meantime, decrease the lipid. In conclusion, according to the current study, the addition of 0.025–0.05 g/kg of curcumin was suggested in hybrid sturgeon diets. This study could provide scientific basis for curcumin supplementation in sturgeon feed, ultimately help the health development of sturgeon aquaculture.

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董凯玥,王艺,陈细华,刘伟,褚志鹏,岳华梅,李创举.饲料中添加姜黄素对杂交鲟幼鱼代谢酶、抗氧化和肠道结构的影响[J].中国水产科学,2023,30(1):37-47
DONG Kaiyue, WANG Yi, CHEN Xihua, LIU Wei, CHU Zhipeng, YUE Huamei, LI Chuangju. Effect of curcumin addition to feed on metabolic enzymes, antioxidant, and gut structure in hybrid sturgeon (Acipenser baeri♂×Acipenser schrenckii♀)[J]. Journal of Fishery Sciences of China,2023,30(1):37-47

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  • 在线发布日期: 2023-01-17
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