Two experiments were conducted to determine the impact of diets with yeast-based direct fed microbials (DFM) in nursery pigs weaned from sows fed lactation diets with or without yeast additives. Treatment descriptions for both experiments are reviewed in Table 1. There was no evidence of sow and nursery treatment interactions for either experiment (P > 0.05). In Exp. 1, 340 weaned pigs, initially 5.1 kg ± 0.02, were used to evaluate previous sow treatment (control vs yeast additives; Phileo by Lesaffre, Milwaukee, WI) and nursery diets with or without DFM. Treatments were a 2×2 factorial with main effects of sow treatment and nursery treatment (control vs. yeast-based pre- and probiotic diet) with 5 pigs/pen and 17 replications/treatment. Progeny from sows fed yeast additives had increased (P < 0.05) ADG from d 0-24 and d 0-45. However, pigs that were fed yeast additives for the first 24 d in the nursery tended to have decreased d 0-45 ADG (P = 0.079). In Exp. 2, 330 weaned pigs, initially 5.8 kg ± 0.03, were used to evaluate diets with combinations of DFM. Treatments were arranged in a 2×3 with main effects of sow (same as Exp. 1) and nursery treatment with 6 pigs/pen and 8 to 10 replications/treatment. From d 0-10 post-weaning, progeny of sows fed yeast additives had increased (P < 0.05) ADG and G:F. From d 24-38 when pigs were fed common diets with no added yeast-based products, ADG for pigs previously fed DFM2 was greater (P < 0.05) than control. In conclusion, feeding sows yeast during lactation improved offspring nursery growth performance in both studies. Interestingly, feeding live yeast and yeast extracts reduced nursery pig performance in Exp. 1; however, feeding DFM 2 improved growth later in the nursery in Exp. 2.

中文翻译：

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129 哺乳期和保育日粮中含有的活酵母和酵母提取物对保育猪生长性能的影响

进行了两项实验，以确定含有酵母添加剂的直接饲喂微生物 (DFM) 日粮对哺乳期母猪断奶后的影响，该母猪饲喂含有或不含酵母添加剂的哺乳期日粮。两个实验的处理描述见表 1。没有证据表明任何一个实验的母猪和保育室处理相互作用（P > 0.05）。在 Exp。1, 340 头断奶仔猪，最初为 5.1 kg ± 0.02，用于评估之前的母猪处理（对照与酵母添加剂；Lesaffre，Milwaukee，WI 的 Phileo）和有或没有 DFM 的保育日粮。处理是 2×2 因子，具有母猪处理和保育处理（对照与基于酵母的预生菌和益生菌日粮）的主要影响，每栏 5 头猪和 17 次重复/处理。饲喂酵母添加剂的母猪的后代在 0-24 天和 0-45 天增加了 (P < 0.05) ADG。然而，在保育室的前 24 天饲喂酵母添加剂的猪倾向于降低 0-45 天的 ADG (P = 0.079)。在 Exp。2, 330 头断奶仔猪，最初为 5.8 kg ± 0.03，用于评估 DFM 组合的日粮。处理以母猪（与实验1相同）和保育处理以6头猪/栏和8至10个重复/处理为主要效果的2×3布置。从断奶后第 0-10 天开始，饲喂酵母添加剂的母猪后代增加了 (P < 0.05) ADG 和 G:F。从第 24-38 天开始，当猪饲喂不添加酵母产品的普通日粮时，先前饲喂 DFM2 的猪的 ADG 高于对照（P < 0.05）。总之，在这两项研究中，母猪在哺乳期饲喂酵母提高了后代保育期的生长性能。有趣的是，饲喂活酵母和酵母提取物会降低 Exp 中的保育猪表现。1个；然而，饲喂 DFM 2 后在 Exp. 2.