Using Amazonian Mauritia flexuosa fruit pulp as a functional food for postlarvae of Litopenaeus vannamei

It was investigated the effects of the inclusion of the Amazonian Mauritia flexuosa fruit pulp in diets used to feed Litopenaeus vannamei postlarvae (PL) (weight: 5.0 ± 0.3 mg). Five diets (37% protein, 10% lipid), containing 0 (Control group), 1.25, 2.50, 5.00 and 10.00 % (W/W) of M. flexuosa fruit pulp inclusion were offered to the postlarvae (1 shrimp L-1, 100 L-Tanks, treatments in triplicate) for 43 days. Measured variables included: the growth performance, carcass composition, total carotenoids content, total antioxidant capacity (ACAP), lipid peroxidation (TBARS), and economic benefits. M. flexuosa fruit pulp in the diet of L. vannamei postlarvae promoted positive effects on antioxidant capacity, retention of carotenoids, and reduced lipid peroxidation levels. Moreover, it decreased the protein production cost, pointing to the utility of this fruit in sustainable aquaculture. An inclusion level of 5% showed to be economically feasible and near the maximum induction of PL total antioxidant capacity.本研究探究了在饲喂凡纳滨对虾（Litopenaeus vannamei）仔虾（postlarvae，PL，体重：5.0±0.3 mg）的日粮中添加亚马逊莫里茨棕榈（Mauritia flexuosa）果肉的作用效果。实验设置五组粗蛋白含量37%、粗脂肪含量10%的日粮，分别以重量占比（W/W）0（对照组）、1.25%、2.50%、5.00%及10.00%的比例添加莫里茨棕榈果肉，以1尾/升的养殖密度在100升水箱中饲养仔虾，每组设置3个重复，养殖周期为43天。本次实验测定的指标包括生长性能、体成分组成、总类胡萝卜素含量、总抗氧化能力（ACAP）、脂质过氧化（TBARS）及经济效益。结果表明，凡纳滨对虾仔虾日粮中添加莫里茨棕榈果肉，可对其抗氧化能力产生积极影响，促进类胡萝卜素留存，并降低脂质过氧化水平；此外，该果肉可降低蛋白质生产成本，彰显了其在可持续水产养殖中的应用价值。当添加水平为5%时，不仅具备经济可行性，还可使仔虾的总抗氧化能力接近最大诱导水平。