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D.G. Landblom and W.W. Poland, Dickinson Research Extension Center, North Dakota State University, Dickinson, ND. 2000 Journal of Animal Science Vol. 78 (Suppl. 1). Nutrition strategies to lower pig starter feed costs among differing grain energy sources.

Four experiments were conducted using 19-21 da, 5.5 kg pigs (n = 410) to evaluate progressively lower cost Phase-1 pig starter formulations and energy substrates on pig performance during the initial 0-7 day transition and an overall 28-day feeding period. The four experimental preparations: Diet 1) 22% dried whey (DW), 7.5% lactose (L), and 6% spray dried animal plasma (SDAP), Diet 2) 22%DW, 7.5% L, 2% SDAP, 2% soy protein concentrate (SPC), and 2% spray dried blood meal (SDBM), Diet 3) 29% DW, 4.5% SDAP, Diet 4)29% DW, 1.5% SDAP, 2%SPC, and 1% SDBM were fed in corn (C)-, hull-less waxy barley (HWB)-, hull-less oat (HO)-, and hard red spring wheat (HRSW)-based diets in separate experiments and compared to a corn control diet containing 22% DW, 7.5% L, and 6% SDAP. Transition diets were fed during Phase-1 (0-7 Da) were significantly reduced during Phase-2 (8-14 Da), and were completely removed during Phase-3 (15-28 Da). PIC C-15 x 326 pigs were assigned to 4 pen replicates/diet and 7 or 8 pigs/pen. Test diets were pelleted for dietary phases -1 and -2, and in meal form during phase-3. Contrasts were: corn control vs. grain-base, 29% DW vs. 22% DW+7.5% L, and SDAP vs. protein combinations. Considering pig response to the experimental transition diets fed with the four grain energy sources, including either 4.5 or 6.0% SDAP in Diets 1 and 3, and the DW+L combination in Diets 1 and 2 stimulated ADFI (P=.03), and G:F (P=.07) when C and HWB were the basal grains. By contrast, when HO and HRSW were the basal grains, the presence of SDAP did not stimulate ADG, ADFI, or G:F more than the less expensive protein and lactose combinations. Pigs fed Diet 4 and HO were more efficient (P=.01) than control and other diets. Pigs fed Diet 4 and HRSW grew faster (P=.01), consumed more (P=.01), and were the lowest cost/unit of gain to feed compared to the control and other test diets. These data suggest lower-cost, nutrient-dense, pig starter diets can be prepared using reduced levels of SDAP, SPC, SDBM, and DW when high energy HO and HRSW are selected as basal grains.

Keywords: Pig starter, Protein Combination, Energy Source


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