文献类型：期刊文献

英文题名：Effects of replacement of inorganic trace elements by organic trace elements in alternative diets of Tenebrio molitor on growth performance, antioxidant capacity, immunity and intestinal flora of Litopenaeus vannamei

作者：Liang Q.; Li C.; Tan B.; Xie S.; Dong X.; Yang Q.; Chi S.; Zhang S.; Deng J.; Liu H.

机构：[1]Laboratory of Aquatic Animal Nutrition and Feed, Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China;[2]Guangdong Engineering Technology Research Center of Accurate Nutrition and High-Efficiency Feeding of Aquatic Animals, Guangdong, Zhanjiang, China;[3]Key Laboratory of Aquatic, Livestock and Poultry Feed Science and Technology in South China, Ministry of Agriculture, Zhanjiang, 524088, China

年份：2026

卷号：46

外文期刊名：Aquaculture Reports

收录：Scopus(收录号：2-s2.0-105026584043)

语种：英文

外文关键词：Gut microflora; Litopenaeus vannamei; Organic trace elements; Tenebrio molitor

外文摘要：This study evaluated the effects of replacing inorganic trace elements with organic forms in T enebrio molitor -based diets on the growth performance, antioxidant capacity, immune response, and intestinal microbiota of Pacific white shrimp (Litopenaeus vannamei). A total of 480 juvenile shrimp (initial body weight 0.26 ± 0.01 g) were randomly assigned to four dietary treatments with three replicates per treatment for a 10-week feeding trial. A fishmeal-based diet supplemented with inorganic trace elements served as the control. In the negative control, 40 % of fishmeal was replaced with T. molitor . Based on this diet, inorganic iron, manganese, and zinc were replaced with 40 % or 60 % organic forms. Shrimp fed the diet containing 60 % organic trace elements showed significantly lower final body weight, weight gain rate, and specific growth rate, as well as a higher feed conversion ratio, compared with the 40 % replacement group. Although fishmeal replacement with T. molitor reduced antioxidant capacity, supplementation with organic trace elements significantly increased the activities of superoxide dismutase, catalase, and glutathione peroxidase. The activities of acid phosphatase and alkaline phosphatase and the expression of immune-related genes were significantly enhanced in shrimp fed the diet containing 40 % organic trace elements. In addition, organic trace element supplementation partially improved intestinal microbiota composition by reducing potential pathogenic bacteria. In conclusion, the 40 % replacement of inorganic iron, manganese, and zinc with organic forms was identified as the optimal proportion, as it enhanced antioxidant and immune responses without compromising growth performance in L. vannamei . Copyright ? 2026. Published by Elsevier B.V.