Gunathilaka Buddhi E, Kim Geun-Up, Lee Sang-Min
Department of Aquatic Life Medicine, Gangneung-Wonju National University, Gangneung, Republic of Korea.
Gangwon Sea Grant, Gangneung-Wonju National University, Gangneung, Republic of Korea.
Aquac Nutr. 2025 May 6;2025:4630480. doi: 10.1155/anu/4630480. eCollection 2025.
Chum salmon () is an indigenous salmonid species found in Korea. This experiment was conducted to evaluate the effects of fish meal (FM) replacement with krill meal (KM), soy protein concentrate (SPC), meat meal (MM), and chicken byproduct meal (CBM) in chum salmon diets. A control diet was designed to contain 60% FM, 5% KM, and 8% SPC (FM60). Three diets were formulated to contain 45%, 30%, and 15% FM (FM45, FM30, and FM15). The reduced protein levels after FM replacement were supplied with a mixture of KM, SPC, MM, and CBM. Fish, averaging 5.94 ± 0.19 g, were fed four experimental diets or a commercial diet (COMF) for 6 weeks. Final body weight of fish fed FM30 and FM15 diets were significantly increased than fish fed COMF. Feed intake (FI) was significantly higher in FM60, FM45, and FM30 groups than COMF group. Condition factor (CF) was significantly higher in FM15 group compared to FM60 and COMF groups. Muscle saturated, highly unsaturated, and omega-3 fatty acids were significantly higher in COMF group compared to those of fish fed other diets. FM15 groups exhibited significantly lower EPA and DHA levels compared to FM60, FM45, and FM30 groups and significantly higher omega-6 levels compared to other groups. The results indicate that a mixture of KM, SPC, MM, and CBM can be used to replace FM in chum salmon diet down to 30%-15% while maintaining normal performance compared to diet containing 60% FM.
大麻哈鱼（）是一种原产于韩国的鲑科鱼类。本实验旨在评估用磷虾粉（KM）、大豆浓缩蛋白（SPC）、肉粉（MM）和鸡肉副产品粉（CBM）替代大麻哈鱼日粮中鱼粉（FM）的效果。设计了一种对照日粮，其中含有60%的FM、5%的KM和8%的SPC（FM60）。配制了三种日粮，分别含有45%、30%和15%的FM（FM45、FM30和FM15）。FM替代后降低的蛋白质水平由KM、SPC、MM和CBM的混合物提供。平均体重为5.94±0.19克的鱼被投喂四种实验日粮或一种商业日粮（COMF），持续6周。饲喂FM30和FM15日粮的鱼的终末体重显著高于饲喂COMF的鱼。FM60、FM45和FM30组的采食量（FI）显著高于COMF组。FM15组的肥满度（CF）显著高于FM60和COMF组。与饲喂其他日粮的鱼相比，COMF组肌肉中的饱和脂肪酸、高度不饱和脂肪酸和ω-3脂肪酸显著更高。与FM60、FM45和FM30组相比，FM15组的二十碳五烯酸（EPA）和二十二碳六烯酸（DHA）水平显著更低，与其他组相比，ω-6水平显著更高。结果表明，KM、SPC、MM和CBM的混合物可用于替代大麻哈鱼日粮中高达30%-15%的FM，同时与含有60%FM的日粮相比保持正常性能。
