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  • Title: Effects of steeped or fermented distillers dried grains with solubles on growth performance in weanling pigs.
    Author: Wiseman M, McBride B, Li J, Wey D, Zhu J, de Lange CFM.
    Journal: J Anim Sci; 2017 Aug; 95(8):3563-3578. PubMed ID: 28805885.
    Abstract:
    Coproduct feeding value may be improved by enzyme and microbial inoculant treatment in liquid diets. Three experiments were conducted to assess growth performance in newly weaned 20-d-old pigs fed corn- and soybean meal-based diets with untreated, steeped, or partially fermented distillers dried grains with solubles (DDGS) from day of weaning. In Exp. 1, conventionally dry fed diets with untreated DDGS (DDGS) or without DDGS (Control) were fed. In Exp. 2, liquid diets (25% DM [75% moisture]) were fed with enzymes (β-glucanase and xylanase at 67.2 and 51.4 U/g DDGS, respectively) added to dry DDGS at the time of liquid feeding (UNSTP) or steeped with DDGS and added to liquid feed from d 5 to 12 of each batch prior to liquid feeding (STP). In Exp. 1 and 2 DDGS inclusion levels were 7.5% in phase 1 (d 0 to 7) and 25% in phase 2 (d 7 to 21) and phase 3 (d 21 to 35). In Exp. 3 liquid diets were fed with the Exp. 2 enzymes and silage inoculant (360,000 combined cfu and /g DDGS) added to dry DDGS at the time of liquid feeding (UNFER) or fermented with DDGS and added to liquid feed from d 1 to 7 of each batch before liquid feeding (FER). The inclusion levels of DDGS were 7.5% in phase 1 (d 0 to 7), 16.25% in phase 2 (d 7 to 21), and 25% in phase 3 (d 21 to 42 or 48). Experiment 3 diets were fed to light (LBW; 5.8 ± 0.6 kg) or heavy (HBW; 7.6 ± 0.8 kg) BW pigs at weaning, and results were analyzed separately. Pig BW and ADFI were measured weekly in each experiment. In Exp. 1, feeding diets with DDGS depressed ( < 0.05) ADFI on d 7 to 21 (491 vs. 375 ± 21 g DM/pig) and d 0 to 35 (456 vs. 405 ± 13 g DM/pig). In Exp. 2 growth performance was not affected. In Exp. 3 ADFI of HBW pigs was not affected. The HBW pigs fed FER had lower ( < 0.05) ADG and G:F on d 7 to 21 (323 vs. 264 ± 15 g/pig and 0.86 vs. 0.72 ± 0.02 g:g, respectively) and lower ( < 0.05) BW on d 21 (12.4 vs. 11.6 ± 0.2 kg) compared with HBW pigs fed UNFER. The LBW pigs fed FER had lower ( < 0.05) ADFI on d 0 to 7 and 7 to 21 (190 vs. 168 ± 3 and 318 vs. 273 ± 13 g DM/pig, respectively) and had greater ( < 0.05) ADG on d 42 to 48 (773 vs. 941 ± 60 g/pig) and BW on d 48 (24.5 vs. 25.8 ± 0.5 kg) compared with LBW pigs fed UNFER. Results show that up to 25% DDGS inclusion in weaning pig diets did not affect overall growth performance. Liquid-fed partially fermented DDGS had an influence on the growth performance of weanling pigs, particularly during the extended nursery period of pigs of light weaning weight in this study.
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