Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effects of Extruded and Extruded-Pelleted Corn Products Partially Substituted for Unprocessed Corn of the Starter Diet on Growth Performance and Incidence of Diarrhea in Weanling Pigs

  • Park, Byung-Chul (Sunjin Co., Ltd.) ;
  • Han, Jeong-Cheol (Regional Animal Industry Center, Gyeongnam National University of Science and Technology) ;
  • Ko, Young-Hyun (Regional Animal Industry Center, Gyeongnam National University of Science and Technology) ;
  • Ha, Duck-Min (Regional Animal Industry Center, Gyeongnam National University of Science and Technology) ;
  • Kim, Doo-Hwan (Regional Animal Industry Center, Gyeongnam National University of Science and Technology) ;
  • Jang, Insurk (Regional Animal Industry Center, Gyeongnam National University of Science and Technology) ;
  • Lee, C. Young (Regional Animal Industry Center, Gyeongnam National University of Science and Technology)
  • Received : 2013.03.12
  • Accepted : 2013.04.25
  • Published : 2013.04.30
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Abstract

The aim of the present study was to investigate the effects of partial substitution of an extruded or extruded-pelleted corn product for unprocessed corn of the starter diet on growth performance and incidence of diarrhea in weanling pigs. Seventy-two 21-day-old weanling pigs were allotted to 24 pens and provided ad libitum with one of the four experimental diets for 3 wk in two serial feeding trials during summer beginning from late June. The treatments were a milk product-soy-corn-based control diet containing 25% unprocessed corn and the other three diets only substituted with 12.5% extruded corn Suprex$^{(R)}$, Optigrain$^{(R)}$, an extruded mixture of wheat, rye and durum, or extruded-pelleted corn for an equal percentage of unprocessed corn of the control diet. All diets were supplemented with 100 ppm sulfathiazone, 50 ppm penicillin, and 100 ppm chlortetracycline for preventive medication. The initial and final weights as well as gain : feed were less in the second trial than in the first one (P<0.05). However, effects of the dietary treatments were not detected in any of the performance variables including final weight, ADG, ADFI, and gain : feed, nor were there any interactions between the trial and dietary treatment. In addition, almost all pigs exhibited normal firm feces in both trials and therefore there was no main effect in the fecal consistency score. Results suggest that partial substitution of the thermally processed corn for unprocessed corn of the milk product-corn-soy-based and medicated starter diet has no effect on growth performance or incidence of diarrhea in weanling pigs.

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References

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