Abstract A strain of rainbow trout at the Hagerman Fish Culture Experiment Station has undergone a long-term selection program for growth on a plant-based diet (HGM strain). Comparing fish from the F8 generation to a commonly available commercial strain selected for growth (CSS), we sought to investigate potential differences in oral tolerance, intestinal microbiota richness and overall growth when fed a 40% SBM diet. Triplicate tanks (initial mean fish weight 77.9 ± 1.1 g) of each strain were fed diets containing either 0% or 40% SBM over 12 weeks in a factorial design. Fish were weighed every four weeks and subsampled to assess gene expression in the distal intestine. Fish were also sampled at the beginning and end of the study to assess gut histology and characterize intestinal microbiota. At twelve weeks, the HGM strain showed superior growth on both diets (p

中文翻译：

---

以植物为基础的饮食的选择揭示了喂食高大豆饮食时虹鳟鱼 (Oncorhynchus mykiss) 的口服耐受性、微生物群和生长的变化

摘要 Hagerman 鱼类养殖实验站的虹鳟鱼品种经过了长期的植物性饲料（HGM 品系）选择计划。将 F8 代的鱼与选择用于生长 (CSS) 的常用商业品系进行比较，我们试图研究饲喂 40% SBM 饮食时口服耐受性、肠道微生物群丰富度和整体生长的潜在差异。在因子设计中，每个菌株的三份鱼缸（初始平均鱼重 77.9 ± 1.1 克）在 12 周内被喂食含有 0% 或 40% SBM 的饮食。每 4 周对鱼称重一次并取样以评估远端肠道中的基因表达。在研究开始和结束时也对鱼进行取样，以评估肠道组织学并表征肠道微生物群。十二周时，