饲料中添加淀粉对长江中华鲟幼鱼肌肉代谢、抗氧化能力及脂肪酸和氨基酸组成的影响

IF 4.6 2区农林科学 Q1 FISHERIES

Aquaculture Nutrition Pub Date : 2026-09-14 DOI:10.1155/anu/7850039

Tao Yan, Yunyi Xie, Xu Kuang, Tingting Wu, Bo Zhou, Qingzhi Li, Fengqi Zhao, Qiandong Li, Bin He

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引用次数: 0

摘要

濒危长江鲟（Acipenser dabryanus）对膳食碳水化合物的代谢适应尚不清楚。在为期8周的试验中，研究了玉米淀粉水平（0%、10%、20%、30%）对幼鱼（216.6±10.2 g）消化能力、免疫性能、营养物质代谢和肌肉质量的影响。消化酶（脂肪酶、淀粉酶）和糖酵解酶（GK、HK、G6PDH）活性随淀粉水平升高而升高，糖原储存（肌肉：8.4 mg/g，肝脏：24.6 mg/g）升高相关（p < 0.05）。20% ~ 30%淀粉组抗氧化能力提高（p < 0.05）， 30%淀粉组肌肉PUFA含量降低，n - 6/n -3比值升高，动脉粥样硬化（IA）和血栓形成（IT）指数升高。必需氨基酸和增强风味的氨基酸比例随着淀粉的加入而降低，缬氨酸是第一个限制氨基酸。综上所述，20% ~ 30%的淀粉可提高长江中华鲟的代谢和免疫性能，但要实现长江中华鲟的可持续养殖，需要兼顾脂肪沉积和营养品质的平衡。

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Effects of Dietary Starch Supplementation on Muscle Metabolism and Antioxidant Capacity, Fatty Acid and Amino Acid Composition of Juvenile Yangtze Sturgeon (Acipenser dabryanus)

The metabolic adaptation of endangered Yangtze sturgeon (Acipenser dabryanus) to dietary carbohydrates remains unclear. This study investigated how graded corn starch levels (0%, 10%, 20%, 30%) affected digestive capacity, immunity performance, nutrient metabolism and muscle quality in juveniles (216.6 ± 10.2 g) during an 8-week trial. Digestive (lipase, amylase) and glycolytic enzymes (GK, HK, G6PDH) activities rose with starch levels, correlating with elevated glycogen storage (muscle: 8.4 mg/g; liver: 24.6 mg/g) (p < 0.05). Antioxidant capacity increased at 20%–30% starch (p < 0.05), while 30% starch reduced muscle PUFA content and increased n – 6/n – 3 ratio, elevating atherogenic (IA) and thrombogenic (IT) indices. Essential amino acid ratios and flavor-enhancing amino acids decreased with starch inclusion, with valine as the first limiting amino acid. These findings demonstrate that 20%–30% starch could enhance metabolic and immune performance but required balancing with lipid deposition and nutritional quality considerations for sustainable Yangtze sturgeon aquaculture.

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来源期刊

Aquaculture Nutrition 农林科学-渔业

CiteScore

7.20

自引率

8.60%

发文量

131

审稿时长

3 months

期刊介绍： Aquaculture Nutrition is published on a bimonthly basis, providing a global perspective on the nutrition of all cultivated aquatic animals. Topics range from extensive aquaculture to laboratory studies of nutritional biochemistry and physiology. The Journal specifically seeks to improve our understanding of the nutrition of aquacultured species through the provision of an international forum for the presentation of reviews and original research papers. Aquaculture Nutrition publishes papers which strive to: increase basic knowledge of the nutrition of aquacultured species and elevate the standards of published aquaculture nutrition research. improve understanding of the relationships between nutrition and the environmental impact of aquaculture. increase understanding of the relationships between nutrition and processing, product quality, and the consumer. help aquaculturalists improve their management and understanding of the complex discipline of nutrition. help the aquaculture feed industry by providing a focus for relevant information, techniques, tools and concepts.