Chen Zheng, Liu Haokun, Liu Cui, Fei Shuzhan, Hu Xiaomin, Han Dong, Jin Junyan, Yang Yunxia, Zhu Xiaoming, Xie Shouqi
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Aquac Nutr. 2023 Jul 29;2023:7981183. doi: 10.1155/2023/7981183. eCollection 2023.
To assess the effect of dietary selenium (Se) sources on the meat quality and antioxidant capacity of yellow catfish (), sodium selenite (NaSeO), Se yeast, and selenium-enriched (Se-SP) were supplemented in the control diet at 0.30 mg Se/kg feed to formulate four diets. The experimental period lasted 50 days. The results showed that Se levels in the plasma, liver, muscle, and whole body were significantly increased by dietary Se yeast supplementation ( < 0.05) but showed no change in response to NaSeO ( > 0.05). The three types of Se all increased the firmness and decreased the fracturability of the muscles ( < 0.05), but only NaSeO resulted in higher springiness, flexibility, stringiness, and stickiness ( < 0.05). In addition, the muscle -3 polyunsaturated fatty acid (PUFA) content was increased by Se yeast ( < 0.05). Regarding antioxidant capacity, dietary Se yeast and Se-SP supplementation improved hepatic glutathione peroxidase activity but decreased hepatic malondialdehyde content ( < 0.05). Given these results, Se yeast was found to be the optimal source of Se for yellow catfish for higher tissue retention, antioxidant capacity, and PUFA levels. Dietary Se is an effective way to regulate the meat quality and antioxidant capacity of yellow catfish.
为评估日粮硒（Se）源对黄颡鱼肉质和抗氧化能力的影响，在对照日粮中分别添加亚硒酸钠（NaSeO）、硒酵母和富硒蛹虫草（Se-SP），添加量均为0.30 mg Se/kg饲料，以配制四种日粮。试验期持续50天。结果表明，日粮添加硒酵母显著提高了血浆、肝脏、肌肉和鱼体的硒含量（P<0.05），而添加亚硒酸钠对硒含量无显著影响（P>0.05）。三种硒源均提高了肌肉的硬度并降低了其易碎性（P<0.05），但只有亚硒酸钠使肌肉的弹性、柔韧性、黏性和胶黏性更高（P<0.05）。此外，硒酵母提高了肌肉中ω-3多不饱和脂肪酸（PUFA）的含量（P<0.05）。在抗氧化能力方面，日粮添加硒酵母和富硒蛹虫草提高了肝脏谷胱甘肽过氧化物酶活性，但降低了肝脏丙二醛含量（P<0.05）。基于这些结果，发现硒酵母是黄颡鱼的最佳硒源，可使鱼体具有更高的组织硒留存、抗氧化能力和PUFA水平。日粮添加硒是调节黄颡鱼肉质和抗氧化能力的有效途径。
