Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effects of Mud Flat Bacteria Origin Protease Supplementation on Egg Quality, Nutrient Digestibility and Total Protein Concentration of Serum in Laying Hens

산란계에 갯벌 미생물 유래 단백질 분해 효소제의 급여가 계란 품질, 영양소 소화율 및 혈청내 총 단백질 함량에 미치는 영향

  • Kim, H.J. (Department of Animal Resource & Science, Dankok University) ;
  • Cho, J.H. (Department of Animal Resource & Science, Dankok University) ;
  • Chen, Y.J. (Department of Animal Resource & Science, Dankok University) ;
  • Yoo, J.S. (Department of Animal Resource & Science, Dankok University) ;
  • Min, B.J. (Department of Animal Resource & Science, Dankok University) ;
  • Park, B.C. (CJ Feed Co. Ltd.) ;
  • Kim, I.H. (Department of Animal Resource & Science, Dankok University)
  • Published : 2006.12.30
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Abstract

This study was conducted to investigate the effects of mud flat bacteria origin pretense supplementation on e99 qualify, nutrient digestibility and total protein concentration of serum in laying hens. A total of two hundred fifty two laying hens were randomly allocated into three treatments with seven replications for eight weeks. Dietary treatments included 1) CON (basal diet), 2) PRO1 (basal diet + 0.05% pretense) and 3) PRO2 (basal diet + 0.1% pretense). During the entire experimental peripd, hen-day egg production was not affected by treatments (P>0.05). Difference of yolk height was increased in PRO1 treatment compared with CON treatment (P<0.05). Difference of egg weight was increased in PRO2 treatment compared with CON and PRO1 treatments (P<0.05). Shell quality, yolk color unit, haugh unit and egg yolk index were not affected by treatments (P>0.05). DM digestibility was improved in CON and PRO2 treatments compared with PRO1 treatment (P<0.05). N digestibility was improved in PRO2 treatment compared with CON treatment (P<0.05). Total protein concentration in serum were not affected by treatments (P>0.05). In conclusion, mud flat bacteria origin pretense was effective for improving egg weight, yolk height and nutrient digestibility in laying hens.

본 연구는 산란계 사료내 갯벌 미생물 유래 단백질 분해 효소제를 첨가하였을 때 계란 품질, 영양소 소화율 및 혈청 내 총 단백질 함량에 미치는 영향을 알아보기 위해 실시하였다. 사양 시험은 29주령 ISA brown 갈색계 252수를 공시하며 8주간 실시하였다. 처리구는 옥수수-대두박 위주의 사료인 기초 사료구(CON; basal diet), 기초 사료내 단백질 분해 효소제 0.05% 첨가구(PROI; basal diet+0.05% pretense), 0.1% 첨가구 (PRO2; basal diet+0.1% protease)로서 처리구당 7반복, 반복당 12수씩 완전임의 배치하였다. 전체 사양시험 기간 동안, 산란율은 처리구간에 유의적인 차이를 보이지 않았다(P>0.05). 난황고의 변화량은 PRO1 처리구가 CON 처리구와 비교하여 유의적으로 높게 나타났다(P<0.05). 난중의 변화량은 PRO2처리구가 CON과 PRO1 처리구와 비교하여 유의적으로 높게 나타났다(P<0.05). 난각 품질, 난황색, haugh unit 및 난황 계수에서는 처리구간에 유의적인 차이를 보이지 않았다(P>0.05). 건물 소화율에서는 CON과 PRO2처리구가 PRO1 처리구와 비교하여 유의적으로 높게 나타났고(P<0.05), 질소 소화율에서는 PRO2 처리구가 CON 처리구와 비교하여 유의적으로 높게 나타났다(P<0.05). 혈청내 총 단백질 함량에서는 처리구간에 유의적인 차이를 보이지 않았다(P>0.05). 결론적으로, 산란계 사료내 갯벌 미생물 유래 단백질 분해 효소제의 첨가는 난황고, 난중 및 영양소 소화율을 개선시켰다.

Keywords

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