Abstract This study was conducted to assess the effect of nano-ZnO, compared to ZnO and Zn-methionine, on dry matter (DM) intake (DMI), performance, nutrient status, digestibility, rumen fermentation, microbial nitrogen (N) synthesis (MNS), blood enzymes, ferric reducing antioxidant power (FRAP) and immunoglobulin G (IgG) in sheep. Thirty-six healthy male Shal sheep were divided into four experimental groups (n = 9) in a completely randomized design, and assessed for 40 days. The control animals received the basal diet without Zn supplementation, containing a native Zn content of 22.6 mg/kg DM. Other sheep were fed with the diets containing 28 mg supplementary Zn/kg DM in the form of ZnO, Zn-methionine or nano-ZnO. The DMI of sheep receiving Zn-methionine was higher (P = 0.035) than the control group, but was similar among the Zn-supplemented groups. Although supplementation of the basal diet with Zn increased (P

中文翻译：

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与 ZnO 和 Zn-甲硫氨酸相比，纳米 ZnO 对绵羊性能、营养状况、瘤胃发酵、血液酶、铁还原抗氧化能力和免疫球蛋白 G 的影响

摘要 本研究旨在评估纳米 ZnO 与 ZnO 和 Zn-甲硫氨酸相比，对干物质 (DM) 摄入量 (DMI)、性能、营养状况、消化率、瘤胃发酵、微生物氮 (N) 合成的影响。 MNS)、血液酶、铁还原抗氧化能力 (FRAP) 和羊的免疫球蛋白 G (IgG)。36 只健康雄性 Shal 绵羊以完全随机的设计分为四个实验组（n = 9），并评估 40 天。对照动物接受不含锌补充剂的基础饮食，其天然锌含量为 22.6 mg/kg DM。其他绵羊用含有 28mg ZnO、Zn-甲硫氨酸或纳米 ZnO 形式的补充 Zn/kg DM 的饮食喂养。接受锌-蛋氨酸的绵羊的DMI高于对照组（P = 0.035），但在补充锌的组中相似。尽管基础日粮中锌的补充量增加（P