
盐碱水对鲌鲂“先锋2号”营养品质的影响
喻亚丽, 李珍, 张浪, 李清, 孙艳红, 魏辉杰, 王贵英, 甘金华
盐碱水对鲌鲂“先锋2号”营养品质的影响
Effects of saline-alkali water on the nutritional quality of Bo fang“Xianfeng No.2”
目的 探究水体盐碱度对鲌鲂“先锋2号”肌肉营养品质的影响,为淡水鱼在盐碱水环境中养殖提供科学依据。 方法 通过在盐碱水(5‰ NaCl、1‰ NaHCO3)中暂养鲌鲂“先锋2号”0 d(对照组)、8、16、30 d,分别对其肌肉中常规营养成分、氨基酸和脂肪酸含量和组成以及肌肉质构特性进行测定。 结果 试验组8 d、16 d和30 d的鱼肉蛋白质、脂肪含量均显著高于对照组0 d(P<0.05)。肌肉中氨基酸总量、必需氨基酸总量和非必需氨基酸总量随暂养时间延长呈先升后降的趋势,在16 d时含量达到最高值。在检测到的19种脂肪酸中,16种脂肪酸含量随着暂养时间延长而显著上升(P<0.05)。盐碱水暂养30 d时,肌肉硬度和弹性显著高于对照组0 d(P<0.05),8 d时回复性显著高于对照组(P<0.05)。 结论 鲌鲂“先锋2号”可以适应盐碱环境,且盐碱水可有效提高其肌肉营养品质,改善肌肉质地,具有较高的食用价值和经济价值。根据本研究结果与实际养殖情况综合考虑,建议鲌鲂“先锋2号”在盐碱水中暂养16 d。
Objectives The effects of salinity and alkalinity in water on the nutrient quality of muscle in Bo fang "Xianfeng No.2" were studied to provide the scientific basis for farming freshwater fish in saline-alkali water. Methods Bo fang "Xianfeng No.2" were temporarily fed in saline-alkali water (5‰ NaCl, 1‰ NaHCO3) for 0 days (as the control group), 8 days, 16 days, and 30 days (as the experimental group). The content and composition of conventional nutrients, amino acid and fatty acid, and the characteristics of muscle texture in muscles of Bo fang "Xianfeng No.2" were measured. Results The content of protein and fat in fish meat in the experimental group was significantly higher than that in the control group (P<0.05). The total amount of amino acids, essential amino acids, and non-essential amino acids in muscles had a trend of first increasing and then decreasing with the extension of time for temporary feeding, reaching the highest value at 16 days. Among the 19 fatty acids detected, the content of 16 fatty acids significantly increased with the prolongation of time for temporary feeding (P<0.05). The hardness and elasticity of muscle in 30 days of temporary feeding in saline-alkali water were significantly higher than those in the control group (P<0.05), and the recovery at 8 days was significantly higher than that in the control group (P<0.05). Conclusions Bo fang "Xianfeng No. 2" adapted to saline-alkali environment, and saline-alkali water effectively improved the nutritional quality and texture of muscle, making it highly edible and economically valuable. It is recommended to feed Bo fang "Xianfeng No. 2" temporarily in saline-alkali water for 16 days based on the results of the current study and the actual situation of aquaculture.
鲌鲂“先锋2号” / 盐碱水 / 营养品质 / 氨基酸 / 脂肪酸
Bo fang "Xianfeng No.2" / saline-alkali water / nutritional quality / amino acid / fatty acid
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