Efficacy of NuPro in Nursery Diets

摘要

A total of 216 weanling pigs (Dckalb line 348 sired by Dekalb EB boars) were used to evaluate the efficacy of NuPro 2000 as an alternative to plasma protein in nursery diets. Pigs were sorted into three weight blocks, and pigs within each weight blockwere randomly assigned to pens of six pigs. Dietary treatments fed from d 0 to 7 (Phase 1) included a control complex nursery diet containing 4.25% plasma protein or the control diet with 50 or 100% of the plasma protein replaced with NuPro. In phase 2(d 7 to 21), plasma protein was reduced to 2% in the control diet and NuPro replaced 50% of the plasma protein in treatment 2 and 100% in treatments 3 and 4. During phase 3 (d 21 to 42), treatments 1, 2 and 3 were fed a common diet whereas treatment 4 received a diet containing 1.3% NuPro. Phase 1 and 2 diets were complex nursery diets prepared by Hubbard Feeds, Inc., and basemixes were provided for phase 3 diets. Diets were formulated to meet currently acceptable ideal protein requirements and were formulated to simulate diets typical of those used in the integrated industry. During Phases 1 and 2, no differences (P > 0.10) were observed among the four dietary treatments with regard to ADG, ADFI, or F:G. From d 21 to 28 of the experiment (first week of Phase 3), pigs previously fed the diet containing NuPro at the 100% replacement level and those continuing to receive NuPro had higher (P < 0.05) ADG and ADFI than pigs previously fed NuPro at the 50% replacement level. These results suggest NuPro is an effective substitute for up to 100% of the plasma on an equal weight basis during the first 21 -d post-weaning. Therefore, NuPro may offer an effective vegetable-based protein source for the early-weaned pig.