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Swine Nutrition and Feed Technology
Asian-Australasian Journal of Animal Sciences 2001;14(2): 224-230.
DOI: https://doi.org/10.5713/ajas.2001.224    Published online February 1, 2001.
Effects of Feeding Extruded Corn and Wheat Grain on Growth Performance and Digestibility of Amino Acids in Early-Weaned Pigs
W. T. Cho, Y. G. Kim, J. D. Kim, B. J. Chae, In K. Han
This study was conducted to evaluate the extruding effects of corn and wheat on growth performance and fecal digestibility of amino acids in early-weaned pigs. Ground corn and wheat by a hammer mill (3 mm screen in diameter) were extruded at 130째C with a moist-type extruder (Matador짰). Treatments were: 1) 3 mm ground corn, 2) extruded corn, 3) 3 mm ground wheat, and 4) extruded wheat. A total of 160 pigs (14 d of age and 4.3 0.74 kg BW) were allotted with the dietary treatments for a 21-d feeding trial. All diets were mash and contained 30% corn or wheat products. For a digestibility trial, 16 pigs (14-d old and 4.2 0.32 kg BW) were employed in individual metabolic crates. There were no differences (p>0.15) in growth performance between corn-fed and wheat-fed groups. Feeding pigs diets containing extruded corn or wheat did not affect ADG (p>0.15) and ADFI (p>0.15), but it improved feed/gain (p<0.01). Also, feeding pigs diets containing extruded corn or wheat had lower true fecal digestibilities of arginine, histidine, isoleucine, lysine and valine (p<.007) in the pigs. In conclusion, our results suggest that extruding corn and wheat had no benefit on the growth of early-weaned pigs.
Keywords: Corn; Wheat; Extrusion; Growth; Digestibility; Early-Weaned Pig

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