摘要
【目的】本文研究了β-葡聚糖对亚东鲑幼鱼生长、肠道消化酶活性及肝脏抗氧化能力的影响。【方法】选择平均体质量为(1.07±0.3)g幼鱼1050尾,分别投喂添加不同含量β-葡聚糖0、0.1%、0.2%、0.5%、1.0%、1.5%和2.0%基础饲料,试验周期60 d。【结果】随着β-葡聚糖含量不断增加,特定生长率(SGR)呈先递增后降低变化趋势,0.5%试验组最大,显著高于其他各组(P<0.05);不同β-葡聚糖含量对肠道消化酶活性有一定影响;胰蛋白酶活性0试验组与1.5%和2.0%差异不显著,显著低于其他各组(P<0.05);脂肪酶活性0试验组显著低于其他各组(P<0.05);淀粉酶活性0.5%试验组显著高于其他各组(P<0.05);β-葡聚糖从0至0.5%,GSH含量和GSH-Px、SOD活性依次递增,说明适量β-葡聚糖能够提升亚东鲑幼鱼抗氧化能力。【结论】基础饲料中适量添加β-葡聚糖能促进亚东鲑幼鱼生长,提高肠道消化酶活性和肝脏抗氧化能力。
【Objective】The present paper aimed to study the effect ofβ-glucan on the growth,intestinal digestive enzyme activity and liver antioxidant capacity of juvenile Salmon trutta.【Method】1050 juveniles with an average body weight of(1.07±0.3)g were fed with different contents ofβ-glucan 0,0.1%,0.2%,0.5%,1.0%,1.5%and 2.0%basic feeds respectively,with a test period of 60 days.【Result】With the increase ofβ-glucan content,the SGR increased first and then decreased,and the SGR of 0.5%test group was the largest,significantly higher than that of other groups(P<0.05).Differentβ-glucan content had a certain effect on intestinal digestive enzyme activity;The trypsin activity of 0 test group was not significantly different from 1.5%and 2.0%,which was significantly lower than that of other groups(P<0.05);The Lipase activity of 0 group was significantly lower than that of other groups(P<0.05);The 0.5%amylase test group was significantly higher than the other groups(P<0.05);β-glucan from 0 to 0.5%,GSH content,GSH-Px,SOD activity increased in order,indicating that the appropriate amount ofβ-glucan could enhance the antioxidant capacity of juvenile Salmon trutta.【Conclusion】In summary,the proper addition ofβ-glucan to the basic feed can promote the growth of juveniles of Salmon trutta,and improve the activity of digestive enzymes in the intestine and the antioxidant capacity of the liver.
作者
王万良
周建设
陈美群
王金林
曾本和
王且鲁
扎西拉姆
WANG Wan-liang;ZHOU Jian-she;CHEN Mei-qun;WANG Jin-lin;ZENG Ben-he;WANG Qie-lu;Zhaxilamu(Institute of Fisheries Science,Tibet Academy of Agriculture and Animal Husbandry,Tibet Lhasa 850000,China)
出处
《西南农业学报》
CSCD
北大核心
2021年第3期673-678,共6页
Southwest China Journal of Agricultural Sciences
基金
西藏自治区自然科学基金(XZ2019ZRG-84Z,XZ2019 ZRG-80Z)
国家特色淡水鱼产业技术体系资金支持(CARS-46)
西藏自治区引智成果示范推广项目(2020WZ005,2020WZ007)
西藏自治区科技计划中央引导地方项目(XZ202001YD0022C)。
关键词
亚东鲑
幼鱼
生长
肠道消化酶
肝脏抗氧化
Salmon trutta
Juvenile
Growth
Intestinal digestive enzyme
Hepatic antioxidant capability
