Abstract
Two experiments were conducted to determine the effects of a dietary non-starch polysaccharide enzyme (Easyzyme, Archer Daniels Midland Co., Decatur, IL) or phytase (Phyzyme, Danisco Animal Nutrition, St. Louis, MO) addition in corn-soybean meal or high-fiber diets on nursery pig growth performance. In Exp. 1, 192 nursery pigs (PIC 327 × 1050, initially 21.8 lb) were allotted to 1 of 4 dietary treatments arranged in a 2 × 2 factorial. Main effects were diet type (corn-soybean meal or corn-soybean meal plus 30% wheat middlings) with or without added dietary enzyme (Easyzyme Mixer 1, 1 lb/ton). Each experiment involved 6 pigs per pen and 8 replications per treatment. All diets contained 340.5 phytase units (FTU)/lb. From d 0 to 21, pigs fed corn-soybean meal diets had greater (P < 0.001) ADG than those fed diets containing 30% wheat midds. Added Easyzyme had no effect on ADG. ADFI and F/G exhibited a diet type × Easyzyme interaction (P < 0.03). In corn-soybean meal diets, Easyzyme had no effect on ADFI or F/G, whereas in diets containing 30% wheat midds, Easyzyme increased ADFI and worsened F/G.
Highlights
Co-product ingredients are increasingly used to reduce ever-rising feed costs
Two experiments were conducted to determine the effects of a dietary non-starch polysaccharide enzyme (Easyzyme, Archer Daniels Midland Co., Decatur, IL) or phytase
In corn-soybean meal diets, Easyzyme had no effect on ADFI or F/G, whereas in diets containing 30% wheat midds, Easyzyme increased ADFI and worsened F/G
Summary
Two experiments were conducted to determine the effects of a dietary non-starch polysaccharide enzyme (Easyzyme, Archer Daniels Midland Co., Decatur, IL) or phytase Pigs were fed either a corn-soybean meal–based diet with no Easyzyme or phytase (Phyzyme) or 1 of 6 diets containing 10% wheat midds, 10% hominy, and 10% corn germ meal with or without Easyzyme and 0, 500, or 1,200 FTU/kg phytase. In this experiment, available P was formulated to the pig’s requirement before adding phytase to determine if it affected the digestibility of other nutrients that might enhance growth performance. In the experiment with 5 pigs per pen and 10 replications per treatment, from d 0 to 21, pigs fed the control corn-soybean meal–based diet had greater ADG, ADFI, and better F/G than pigs fed co-product-based diets. Added Easyzyme or high concentrations of phytase in diets adequate in P had no positive effects on growth performance
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