Dietary Nanometer Selenium Enhances the Selenium Accumulation, Nutrient Composition and Antioxidant Status of <i>Paramisgurnus dabryanus</i> spp.
Jianhua Chen,
Shaopeng Xing,
Haixin Xu,
Honggeng Zhu,
Huiyun Fu,
Haihua Wang,
Fugui Li,
Ming Zhu
Affiliations
Jianhua Chen
Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
Shaopeng Xing
Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
Haixin Xu
Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
Honggeng Zhu
Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
Huiyun Fu
Nanchang Key Laboratory of Special Aquatic and Rural Affairs Breeding and Healthy Aquaculture, Jiangxi Fisheries Research Institute, Nanchang 330039, China
Haihua Wang
Nanchang Key Laboratory of Special Aquatic and Rural Affairs Breeding and Healthy Aquaculture, Jiangxi Fisheries Research Institute, Nanchang 330039, China
Fugui Li
College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China
Ming Zhu
Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, Lianyungang 222005, China
Selenium, an essential trace element, exerts beneficial effects on aquatic animals when present in suitable concentrations. This study investigates the effect of dietary nanometer selenium (Nano-Se) on the muscle selenium accumulation, nutrient composition, and antioxidant ability of Paramisgurnus dabryanus spp. Nano-Se was supplemented in the basal diets at levels of 0, 0.1, 0.2, 0.4, and 0.6 mg/kg. Three hundred fish, averaging 5.21 ± 0.06 g, were randomly divided into five groups and fed the experimental diet for 6 weeks. Fish with a dietary Nano-Se supplement of 0.2 mg/kg exhibited activities of SOD, GSH-Px, AKP, and CAT in the liver, which were significantly higher (p p p < 0.05) at ≥0.2 mg/kg Nano-Se levels. The highest levels of essential amino acids, EAA/TAA, and EAA/NEAA ratios were observed in fish fed 0.2 mg of Nano-Se. Thus, this study recommends incorporating 0.2 mg of Nano-Se per kg in the diet to enhance antioxidant defense, selenium content, and nutrient composition.
