Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effects of Dietary Escherichia coli Phytase Supplementation on Growth Performance, Carcass Quality and Excretion of Copper and Zinc Concentrations in Finishing Pigs

Escherichia coli phytase의 첨가가 비육돈의 생산성, 도체특성 및 분 내 구리와 아연 함량에 미치는 영향

  • Kim, Y.H. (National Institute of Animal Science, RDA) ;
  • Shin, S.O. (Department of Animal Resource & Science, Dankook University) ;
  • Park, J.C. (National Institute of Animal Science, RDA) ;
  • Jung, H.J. (National Institute of Animal Science, RDA) ;
  • Cho, J.H. (Department of Animal Resource & Science, Dankook University) ;
  • Chen, Y.J. (Department of Animal Resource & Science, Dankook University) ;
  • Yoo, J.S. (Department of Animal Resource & Science, Dankook University) ;
  • Moon, H.G. (National Institute of Animal Science, RDA) ;
  • Ji, S.Y. (National Institute of Animal Science, RDA) ;
  • Kim, I.C. (National Institute of Animal Science, RDA) ;
  • Lee, S.J. (National Institute of Animal Science, RDA) ;
  • Kim, I.H. (Department of Animal Resource & Science, Dankook University)
  • Published : 2008.02.01
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Abstract

This study was conducted to evaluate effects of dietary Escherichia coli phytase supplementation on growth performance, carcass quality and excretion of copper and zinc concentrations in finishing pigs. The total of seventy two [(Landrace×Yorkshire)×Duroc] pigs(65.43±0.72 kg in average initial body weight) were used in 56 days assay. Dietary treatments included 1) CON (basal diet) 2) P5(basal diet+phytase 0.05%) and 3) P10 (basal diet + phytase 0.1%). There were three dietary treatments with six replicate pens per treatment and four pigs per pen. During the overall periods, ADFI(Average daily feed intake) was increased (P<0.05) in phytase supplementation treatments compared to CON treatment. At the 5th week, dry matter, nitrogen and ash digestibilities were higher in P5 treatment than in CON and P10 treatments(P<0.05) and CON treatment showed the lowest effect on nutrition digestibility(P<0.05). However, phosphorus digestibility was higher in both phytase supplementation treatments than in CON treatment(P<0.05). The pH of M. logissimus dorsi was significantly higher in CON treatment than phytase supplementation treatments(P<0.05). L* value of M. logissimus dorsi muscle color was significantly increased(P<0.05) in P10 treatment compared to CON and P5 treatments. Also, a* value was increased (P<0.05) in CON treatment compared with phytase supplementation treatments. However, excretion of copper and zinc concentrations were no significant difference among the treatments. In conclusion, the effect of Escherichia coli phytase showed in ADFI, digestibilities, pH and color of meat in finishing pigs.

본 연구는 비육돈에 Escherichia coli phytase를 첨가 급여하여 생산성, 도체특성 및 분 내 구리와 아연 함량에 미치는 영향에 대하여 알아보기 위해 시험을 실시하였다. 3원 교잡종 비육돈 72두를 공시하였으며, 시험 개시시 체중이 65.43±0.72kg 이었고, 56일간 사양시험을 실시하였다. 시험설계는 1) CON(기초사료), 2) P5(기초사료+phytase 0.05%) 및 3) P10(기초사료 + phytase 0.1%)로 3개 처리를 하여 처리당 6반복, 반복당 4두씩 완전임의 배치하였다. 전체시험 기간 동안 사료섭취량은 phytase를 첨가한 처리구가 대조구와 비교하여 높게 나타났다(P<0.05). 시험 5주에서 건물, 질소 및 회분 소화율은 P5 처리구가 대조구 및 P10 처리구와 비교하여 유의적으로 가장 높게 나타났으며(P<0.05), 대조구가 가장 낮게 나타났다(P<0.05). 인 소화율은 phytase를 첨가한 처리구가 대조구와 비교하여 유의적으로 높게 나타났으며(P<0.05), 육의 pH는 대조구가 phytase를 첨가한 처리구와 비교하여 유의적으로 높게 나타났다(P<0.05). 육색에 있어서 명도를 나타내는 L* 값은 P10처리구가 대조구 및 P5 처리구와 비교하여 유의적으로 가장 높게 나타났으며, 적색도를 나타내는 a* 값은 대조구가 phytase를 첨가한 처리구와 비교하여 유의적으로 가장 높게 나타났다(P<0.05). 분내 구리와 아연의 함량은 처리구간에 유의적인 차이가 없었다(P>0.05). 결론적으로, 본 시험의 결과 비육돈에 phytase의 첨가 급여는 일당사료섭취량, 영양소 소화율, 육내 pH 및 육색에 영향을 미치는 것으로 사료된다.

Keywords

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