Journal of Animal Environmental Science (한국축산시설환경학회지)

The Korean Society of Animal Environmental Science & Technology (한국축산환경학회)
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Effect of Direct Fed Microbial and Enzyme Supplements on Growth and Biogenic Substances of Growing Steers

혼합미생물제가 육우 송아지의 체내환경에 미치는 영향

  • 양승학 (농촌진흥청 국립축산과학원) ;
  • 김현섭 (농촌진흥청 국립축산과학원) ;
  • 조원모 (농촌진흥청 국립축산과학원) ;
  • 김상범 (농촌진흥청 국립축산과학원) ;
  • 조성백 (농촌진흥청 국립축산과학원) ;
  • 박규현 (농촌진흥청 국립축산과학원) ;
  • 최동윤 (농촌진흥청 국립축산과학원) ;
  • 황성구 (국립한경대학교 농업생명과학대학 동물생명환경과학부) ;
  • 유용희 (농촌진흥청 국립축산과학원)
  • Received : 2012.11.16
  • Accepted : 2012.12.06
  • Published : 2012.12.30
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Abstract

Effect of commercial Direct Fed Microbials (DFM) or protease treated feed (PTF) supplementation on growth rate and biogenic substances such as BUN, glucose, IgG, GOT, GPT and Vitamin A, C, E from Holstein steers was studied for 7 months. Thirty two steers aged 2~3 months were separated with 4 groups for control, DFM (PS), protease (ES) and their mix (PS + ES) supplementally fed 0, 100, 100 and 50 + 50 g/day respectively. Weight gain was averagely higher in PS than any others, although there were no differences significantly. All treatments enhanced to 3~8% of control in dry matter, crude protein and total digestible nutrient (P>0.05). Metabolic diseases with veterinary cure had not shown in this study. Plasma GOT and GPT were lower in the PS and ES than control. Plasma glucose concentration was also lower in PS than the others. Total cholesterol of ES was higher than the others but that of PS is the lowest. Plasma vitamin C was higher in PS than the others. It was shown that dietary PS affected change from glucose to vitamin C with not overloading liver. Conclusionally, PS and ES were shown to enhance metabolic health of steers during growing period.

증체량은 모든 처리구(281.4~294.5 kg)가 대조구(271.4 kg) 보다 높았으나 유의적인 차이는 없었다(P>0.05). PS구를 포함한 모든 처리구의 DM, CP 및 TDN 함량이 대조구에 비해 3~8% 향상되는 결과를 얻었으나 통계적인 차이는 없었다(P>0.05). 모든 시험축군에서 수의적 치료를 요하는 질병은 발생되지 않았다. ES구가 모든 처리구와 비교할 때 총 단백질량은 낮고 BUN은 높은 경향을 보였다(P>0.05). 면역물질인 IgG항체 농도는 전 처리구간에 유의적인 차이가 없었다(P>0.05). 혈중 glucose 농도는 대조구(114 mg/dl)를 제외한 모든 처리구(97.8~104 mg/dl)에서 낮은 경향을 보였다(P>0.05). ES구(109.8 mg/dl)의 총 cholesterol 농도가 대조구(86.3 mg/dl) 보다 26% 높았으나 유의적인 차이가 없었다(P>0.05). 간상피세포 손상여부와 관계있는 GOT, GPT는 대조구(56, 14IU/L)에 비해 모든 처리구(45~49, 11~13.8 IU/L)에서 낮은 수치를 보였으며 유의적인 차이는 없었다(P>0.05). 비타민 A는 PS구(36.1 IU/dl)가 다른 처리구(30.9~34.4 IU/dl) 보다 높았으나 유의적인 차이가 없었다(P>0.05). 비타민 C는 ES구(3 mg/L)가 다른 시험구(3.7~3.9 mg/L) 보다 낮았으나 유의적인 차이가 없었다(P>0.05). 또한 모든 처리구의 비타민 E(150.1~155.4 IU/dl)는 대조구(143.7 IU/dl) 보다 높았으나 유의적인 차이가 없었다(P>0.05).

Keywords

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