Abstract This study was conducted to evaluate the effects of sodium humate (SH) and/or fermented wheat bran polysaccharides (FWBPs) on growth performance, nutrient digestibility, immune responses and antioxidant status of lambs. Seventy-two 4-month-old female crossbred (Dorper × Mongolian Sheep) lambs with initial body weight (BW) of 34.82 ± 1.07 kg were used. Lambs were allotted to a 2 × 2 factorial arrangement with 2 sodium humate (SH) supplemental levels (0 or 2.5 g of SH/kg of diet) and 2 FWBPs supplemental levels (0 or 3 g of FWBPs/kg of diet) according to their initial BW. There were 3 lambs per pen and 6 pen replicates per diet. Lambs were adapted to diets for 15 d, and the experiment was conducted for 60 d. Bodyweight and feed intake were recorded. Fecal samples were collected from each lamb during the last 10 d of the trial to determine nutrient digestibility. Blood was collected at the end of the trial, and used to assess blood metabolites, immune responses and antioxidant status. The results showed that supplemental SH did not affect growth performance of lambs. The ADG of lambs were increased (P

中文翻译：

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添加腐植酸和发酵麦麸多糖的羔羊的生长性能、营养消化率、免疫反应和抗氧化状态

摘要 本研究旨在评估腐植酸钠 (SH) 和/或发酵麦麸多糖 (FWBPs) 对羔羊生长性能、养分消化率、免疫反应和抗氧化状态的影响。使用 72 只 4 月龄雌性杂交（杜泊 × 蒙古羊）羔羊，初始体重（BW）为 34.82 ± 1.07 kg。羔羊被分配到 2 × 2 的阶乘安排，2 种腐植酸钠 (SH) 补充水平（0 或 2.5 g SH/kg 饮食）和 2 FWBPs 补充水平（0 或 3 g FWBPs/kg 饮食）。他们的初始体重。每个围栏有 3 只羔羊，每个饲料有 6 个围栏重复。羔羊适应饮食15 d，实验进行60 d。记录体重和采食量。在试验的最后 10 天收集每只羔羊的粪便样本以确定营养物质的消化率。在试验结束时收集血液，用于评估血液代谢物、免疫反应和抗氧化状态。结果表明，补充SH不影响羔羊的生长性能。羔羊的ADG增加（P