文献类型：期刊文献

英文题名：Effects of dietary astaxanthin on growth performance, muscle composition, non-specific immunity, gene expression, and ammonia resistance of juvenile ivory shell (Babylonia areolate)

作者：Li T.; Zheng P.-H.; Zhang X.-X.; Zhang Z.-L.; Li J.-T.; Li J.-J.; Xu J.-R.; Wang D.-M.; Xian J.-A.; Guo H.; Lu Y.-P.

机构：[1]Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China;[2]Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, China

年份：2024

卷号：145

外文期刊名：Fish and Shellfish Immunology

收录：Scopus(收录号：2-s2.0-85182558094)

语种：英文

外文关键词：Antioxidant; Astaxanthin; Babylonia areolata; Immunity; Stress resistance

外文摘要：Astaxanthin is one of the important immunopotentators in aquaculture. However, little is known about the physiological changes and stress resistance effects of astaxanthin in marine gastropods. In this study, the effects of different astaxanthin concentrations (0, 25, 50, 75, and 100 mg/kg) on the growth, muscle composition, immune function, and resistance to ammonia stress in Babylonia areolata were investigated after three months of rearing. With the increase in astaxanthin content, the weight gain rate (WGR), specific growth rate (SGR), and survival rate (SR) of B. areolata showed an increasing trend. The 75–100 mg/kg group was significantly higher than the control group (0 mg/kg). There was no significant difference in the flesh shell ratio (FSR), viscerosomatic index (VSI), and soft tissue index (STI) of the experimental groups. Astaxanthin (75 mg/kg) significantly increased muscle crude protein content and increased hepatopancreas alkaline phosphatase (AKP), superoxide dismutase (SOD), and catalase (CAT) activity. Astaxanthin (75–100 mg/kg) significantly increased the total antioxidant capacity (T-AOC) and acid phosphatase (ACP) of the hepatopancreas and decreased the malondialdehyde (MDA) content of B. areolata. Astaxanthin significantly induced the expression levels of functional genes, such as SOD, Cu/ZnSOD, ferritin, ACP, and CYC in hepatopancreas and increased the survival rate of B. areolata under ammonia stress. The addition of 75–100 mg/kg astaxanthin to the feed improved the growth performance, muscle composition, immune function, and resistance to ammonia stress of B. areolata. ? 2024 Elsevier Ltd