Islam Md Rabiul, Cho Sung Hwoan, Kim Taeho
Division of Convergence Interdisciplinary Education of Maritime and Ocean Contents, Korea Maritime and Ocean University, Busan 49112, Republic of Korea.
Department of Aquaculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
Animals (Basel). 2024 Jul 26;14(15):2184. doi: 10.3390/ani14152184.
This experiment was performed to evaluate the inclusion impact of various levels of jack mackerel meal (JMM) in olive flounder () feeds substituting 50% FM by duck by-product meal (DBM) on growth, feed availability, and economic efficiency. Seven experimental diets were prepared. The control (Con) diet contained 60% FM. Fifty percent FM in the Con diet was substituted with DBM, and then the graded levels (0%, 10%, 20%, 30%, 40%, and 50%) of JMM were added instead of FM, named the DJ0, DJ10, DJ20, DJ30, DJ40, and DJ50 diets, respectively. All feeds were assigned to triplicate fish groups. At the end of 56 days' feeding, fish fed the DJ40 and DJ50 diets exhibited comparable weight gain and specific growth rate to fish fed the Con diet. Higher feed consumption was observed in fish fed the Con, DJ40, and DJ50 diets compared to fish fed the DJ0 and DJ10 diets. Lower feed conversion ratio was observed in fish fed the Con diet compared to fish fed the DJ0, DJ10, DJ20, and DJ30 diets. Furthermore, the DJ50 diet led to the highest economic profit index (EPI). In conclusion, inclusion of 50% JMM in the olive flounder diet replacing 50% FM with DBM seems to be the most recommendable dietary treatment based on growth and feed consumption of olive flounder and EPI.
本实验旨在评估在牙鲆饲料中用鸭副产品粉（DBM）替代50%鱼粉（FM）时，不同水平的竹荚鱼粉（JMM）对牙鲆生长、饲料利用率和经济效益的影响。制备了七种实验饲料。对照（Con）饲料含有60%鱼粉。对照饲料中50%的鱼粉被鸭副产品粉替代，然后分别添加不同水平（0%、10%、20%、30%、40%和50%）的竹荚鱼粉来替代鱼粉，分别命名为DJ0、DJ10、DJ20、DJ30、DJ40和DJ50饲料。所有饲料均分配给三组重复的鱼群。在56天的投喂期结束时，投喂DJ40和DJ50饲料的鱼的体重增加和特定生长率与投喂对照饲料的鱼相当。与投喂DJ0和DJ10饲料的鱼相比，投喂对照、DJ40和DJ50饲料的鱼的摄食量更高。与投喂DJ0、DJ10、DJ20和DJ30饲料的鱼相比，投喂对照饲料的鱼的饲料转化率更低。此外，DJ50饲料带来了最高的经济利润指数（EPI）。总之，基于牙鲆的生长、饲料消耗和经济利润指数，在牙鲆饲料中用鸭副产品粉替代50%鱼粉并添加50%竹荚鱼粉似乎是最值得推荐的日粮处理方式。
