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Effects of Dietary Carbohydrase Enzyme Complex and Microbial Phytase Supplementation on Productivity and Nutrient Digestibility in Growing Pigs

탄수화물 분해 복합효소제와 미생물 파이테이즈의 첨가가 육성돈의 생산성 및 영양소 소화율에 미치는 영향

  • Shim, Y.H. (College of Animal Resources Science, Kangwon National University) ;
  • Chae, B.J. (College of Animal Resources Science, Kangwon National University) ;
  • Lee, J.H. (Easy-Bio System, Inc.)
  • 심영호 (강원대학교 동물자원과학대학) ;
  • 채병조 (강원대학교 동물자원과학대학) ;
  • 이지훈 ((주)이지바이오시스템)
  • Published : 2003.08.30

Abstract

An experiment was conducted to investigate the effect of microbial phytase (Natuphos$^{\circledR}$) supplementation, individually and in combination with carbohydrase enzyme complex (composed of enzymes targeted to SBM dietary components such as $\alpha$-galactosides and galactomannans; ENDO-POWER$^{\circledR}$) to corn-soy basis diet with low nutrient levels on growth performance and nutrient digestibility of growing pigs. A total of 48 crossbred weaned pigs (Landrace${\times}$Yorkshire${\times}$Duroc), 29.1$\pm$0.14 kg of initial body weight, were randomly allotted to four dietary treatments, based on weight and age, according to a Randomized Complete Block Design. There were three pens per treatment and 4 pigs per pen. The dietary treatments were 1) CON (control diet with 3,380 kcal/kg of metabolizable energy, 18.96% of crude protein, 1.10% of lysine, 0.75% of calcium and 0.35% of available phosphorus), 2) LP+NTPS (CON diet with 0.15% unit lower available P levels+0.1% phytase (500 FTU/kg; Natuphos$^{\circledR}$)), 3) LEL+ENP (CON diet with 3.0% unit lower ME and lysine levels + 0.1% carbohydrase enzyme complex (ENDO-POWER$^{\circledR}$), and 4) LPEL+ENZ (CON diet with 0.15% unit lower available P levels and 3.0% unit lower ME and lysine levels+0.1% ENDO-POWER$^{\circledR}$ and 0.1% Natuphos$^{\circledR}$ (500 FTU/kg). There was no significant difference (p〉0.05) in average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR) among dietary treatments during the whole experimental period (0 to 4 weeks). Apparent digestibility of gross energy was greater in LP+NTPS and LPEL+ENZ groups than in the LEL+ENP (p<0.05). Apparent digestibility of phosphorus was greater in LP+NTPS than in LEL+ENP (p<0.05). Dry matter excretion was lowest in LPEL+ENZ and phosphorus excretion was lowest in LP+NTPS (p<0.05). Overall, pigs fed on LPEL+ENZ group tended to have better nutrient digestibility (dry matter, gross energy, crude protein and phosphorus) than pigs fed on control group. All dietary enzyme treatment groups showed lower feed cost/body weight gain of pigs than control group. In conclusion, the results from the present study suggest that the simultaneous inclusion of phytase and carbohydrase enzyme complex to diets is advantageous with respect to reducing nutrient excretion of growing pigs and may contribute to increased economic return when added to corn-soy based growing pig diets.

본 연구는 영양소 수준을 낮춘 옥수수-대두박 기초 사료내 $\alpha$-galactosidase와 galactomannanase를 함유한 탄수화물 분해 복합효소제 (ENDO- POWER$^{\circledR}$)와 미생물 파이테이즈 (Natuphos$^{\circledR}$) 의 개별첨가 혹은 동시첨가가 육성돈의 생산성, 영양소 소화율 및 체중 증체 당 사료비에 어떠한 영향을 미치는 가를 평가하고자 실시 되었다. 개시 체중 29.1$\pm$0.14 kg의 육성돈 48두를 공시하여 28일간 사양시험을 실시하였다. 시험설계는 4처리를 두었으며, 처리당 3반복 반복당 4두의 육성돈이 완전임의 배치 되었다. 시험 처리는 1) CON (대조구), 2) LP+NTPS (대조구 사료에서 유효인 함량을 0.15% 단위 낮춘 사료에 미생물 파이테이즈 (Natuphos$^{\circledR}$) 0.1% 첨가 (500 FTU/kg 사료), 3) LEL+ENP (대조구 사료에서 대사에너지와 라이신 함량을 대조구 사료 대비 각각 3% 낮춘 사료에 탄수화물 복합효소제 (ENDP-POWER$^{\circledR}$) 첨가) 및 4) LPEL+ENZ (대조구 사료에서 대사에너지와 라이신 함량을 대조구 사료 대비 각각 3% 낮추고 유효인 함량을 0.15% 단위 낮춘 사료에 미생물 파이테이즈 0.1%와 탄수화물 복합효소제 0.1%를 각각 첨가)를 두었다. 전체 사양시험 기간동안 (28일), 일당 증체량 (ADG), 일당사료섭취량 (ADFI) 및 사료요구량 (Feed/gain)은 사료처리구에 따라 유의적인 차이를 나타내지 않았다(P>0.05). 그러나 저 영양소 수준 사료에 파이테이즈와 탄수화물 복합효소제의 개별적 혹은 동시 첨가는, 대조구에 비해, 시험 전기간에 걸쳐 사료효율을 다소 개선 시키는 경향을 보여주었다. 건물, 조단백질 및 칼슘 소화율에 있어서는 처리구간에 유의적인 차이를 보이지 않았으나, 총 에너지 소화율에 있어서는 LEL+ENP 처리구와 비교해 볼 때, LP+NTPS와 LPEL+ENZ 처리구가 유의적으로 높게 평가되었다 (p<0.05). 건물 배설량은 LPEL+ENZ 처리구가 가장 낮았으며, 칼슘과 인 배설량은 LP+NTPS구가 가장 낮았다(p<0.05). 사양시험 기간동안 소요된 전체 사료비용은 대조구와 비교하여 볼 때, 효소제 첨가 시 낮았으며, 특히 1 kg 증체 하는데 필요한 사료비용은 대조구와 비교하여 LP+NTPS, LEL+ENP, LPEL+ENZ가 각각 3.5% (609.1 vs. 588.3 원/kg), 13.8% (609.1 vs. 535.3원/kg), 12.4% (609.1 vs. 541.9 원/kg) 낮은 것으로 조사되었다. 결론적으로, 본 실험 결과는 옥수수-대두박 위주 육성돈 사료에 유효인, 에너지 및 라이신 함량을 낮추고 파이테이즈와 탄수화물 분해 복합 효소제를 첨가 시 육성돈의 성장에는 유해한 영향 없이 영양소 배설량을 감소 시킬 수 있으며, 또한 양돈 생산비를 감소 시킬 수 있는 가능성을 제시했다고 판단된다.

Keywords

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