129 The Effect of Live Yeast and Yeast Extracts Included in Lactation and Nursery Diets on Nursery Pig Growth Performance

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