NCMCRS, University of Tasmania, Launceston, TAS 7250, Australia.
Food Chem. 2013 Nov 1;141(1):236-44. doi: 10.1016/j.foodchem.2013.02.032. Epub 2013 Mar 1.
Feeding fish a fish oil finishing diet (FOFD) after grow-out on vegetable oil diet is one strategy to restore eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) levels. We investigated restoration of EPA and DHA in rainbow trout fed a FOFD preceded by a grow-out period on 50% or 75% palm fatty acid distillate (PFAD) diets at optimal (15°C) or elevated (20°C) water temperatures. Using the FOFD restored EPA and DHA in fillet and whole carcass of fish previously fed either 50% PFAD diet from 85% to 98% or 75% PFAD from 66% to 93% of values obtained for fish fed FO diet throughout. Water temperature did not influence EPA and DHA restoration. Growing rainbow trout with diets where FO was replaced by either 50% or 75% PFAD followed by a FOFD reduced FO usage by around 30% and 44% at 15°C, respectively, and 32% and 48% at 20°C, respectively.
养殖鱼类在食用完植物油饲料后再食用鱼油育肥饲料（FOFD）是一种恢复二十碳五烯酸（EPA）和二十二碳六烯酸（DHA）水平的策略。我们研究了在最佳（15°C）或升高（20°C）水温下，先前分别用 50%或 75%棕榈脂肪酸馏分（PFAD）饲料喂养 85%至 98%或 66%至 93%FO 饲料的虹鳟鱼，用 FOFD 喂养对其鱼体肌肉和整体鱼体中 EPA 和 DHA 的恢复情况。水温不影响 EPA 和 DHA 的恢复。用 FO 分别被 50%或 75%的 PFAD 替代的饲料养殖虹鳟鱼，然后再用 FOFD 喂养，与全程用 FOFD 喂养的鱼相比，在 15°C 时 FO 的使用量分别降低了约 30%和 44%，在 20°C 时 FO 的使用量分别降低了 32%和 48%。
