Abstract A 2 × 3 factorial experiment was conducted to examine the effects of reducing dietary crude protein (CP) concentration and/or supplementation with zinc oxide (ZnO) or laminarin on the growth performance and intestinal health in pigs reared under sanitary (Exp. 1) and unsanitary (Exp. 2) conditions, for 35 days post-weaning (PW). Pigs were assigned to: (T1) 21 % standard CP diet (SCP); (T2) SCP + ZnO; (T3) SCP + laminarin; (T4) 18 % low CP diet (LCP); (T5) LCP + ZnO; (T6) LCP + laminarin (n = 8 replicates/treatment). In Exp. 1 intestinal tissue and digesta were collected on day 9 PW. Under sanitary conditions, there was an effect of CP and additive on the incidence of diarrhoea in the first 14 days PW. Pigs offered the LCP diet had a higher incidence of diarrhoea than those offered the SCP diet (P

中文翻译：

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降低日粮粗蛋白浓度和添加海带多糖或氧化锌对新断奶仔猪生长性能和肠道健康的影响

摘要 进行了一个 2 × 3 析因实验来检验降低日粮粗蛋白 (CP) 浓度和/或添加氧化锌 (ZnO) 或海带多糖对卫生条件下饲养的猪的生长性能和肠道健康的影响（实验 1 ) 和不卫生 (Exp. 2) 条件，断奶后 (PW) 35 天。猪被分配到： (T1) 21% 标准 CP 饮食 (SCP)；(T2) SCP+氧化锌；(T3) SCP+海带多糖；(T4) 18% 低 CP 饮食 (LCP)；(T5) LCP + 氧化锌；(T6) LCP + 海带多糖（n = 8 次重复/处理）。在 Exp. 在第 9 天收集了 1 个肠组织和食糜。在卫生条件下，CP 和添加剂对 PW 前 14 天的腹泻发生率有影响。接受 LCP 饮食的猪比接受 SCP 饮食的猪腹泻发生率更高（P