Effects of Replacing Lactose with Novel Carbohydrate Sources on Nursery Pig Growth Performance

This experiment was conducted to determine the effects of replacing lactose in Phase 1 and 2 nursery pig diets with novel carbohydrate (CHO) products (CHO-D CHO-L; Cargill Starches, Sweeteners, & Texturizers, Blair, NE) on growth performance fecal dry matter. A total 360 barrows (DNA 200 × 400; initially 13.2 ± 0.10 lb) were used a 42-d trial. Pigs weaned at approximately 21 d age, randomly allotted pens weight blocks based initial BW (initially 12.0 14.5 lb), then 6 dietary treatments completely randomized design. There 5 pigs per pen 12 treatment across barns. Dietary corn-soybean meal-based 7.5% DDGS included: 1) negative control (NC; containing 0.08 0.04% lactose, phase 2, respectively); 2) positive (PC; 10 5% 3) 50% replaced CHO (50% CHO-D; 2.5% 4) 100% CHO-D (100% 0.09 0.05% 5) liquid or 6) CHO-L respectively).Treatment formulated two phases fed from 0 24, respectively, common 3 diet for remainder study. During period (d 24) there block source interaction (P = 0.045) ADFI, which heavyweight PC had greater 0.001) ADFI than lightweight same diet, while no significant difference due among any other sources. Furthermore, overall 42) tendency (P= 0.067) ADFI. Additionally, ≤ BW, ADG, compared throughout experiment. However, overall, improved 0.033) feed efficiency block. main effect 0.057) during period, NC lowest numeric F/G highest F/G. this did not persist study 0.329). observed > 0.100) ADG In summary, feeding either sources significantly affect performance, percentage that lost post-weaning, matter those traditional contain lactose. Based results herein, product equivalent treatment, but we unable detect incremental value as differ treatment.