지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.1
- 수록면
- 102 - 113 (12page)
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초록· 키워드
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This study was conducted to investigate the effect of enzyme and yeast extract supplement on growth performance, carcass characteristics and blood parameters in Hanwoo steers. A total of forty-eight 23-month-old Hanwoo steers, with average initial body weight of 545.25±12.60 kg, were assigned to four treatments with three replicates in a completely randomized design. Hanwoo steers housed in four heads group per pen. The treatments comprised of four groups of control (no feed additives), treatment 1 (xylanase, cellulase, and gluco-amylase; 0.1%/concentrate), treatment 2 (β-glucan and mannan-oligosaccharide; 0.1%/concentrate), and treatment 3 (treatment 1+2; 0.1%/concentrate). During the fourth and eighth month, average daily gain and feed conversion rates improved in treatment 1, but in the control this was lower than the other treatments (p<0.05). Real-time ultrasound was used for measuring the live carcass traits (longissimus muscle area, back fat thickness, and marbling score) and the better results were in the following order: treatment 1 > treatment 3 > treatment 2 > control, and extended to carcass grade. White blood cell indices were lower in treatments 2 and 3 and the IgG indices were relatively higher than in other treatments. As a result, levels of xylanase, cellulase, and gluco-amylase were increased from the fourth month to improve growth performance, live carcass traits. During the second month, β-glucan and mannan- oligosaccharide increased IgG indices in blood parameters.
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참고문헌 (25)
참고문헌 신청
AOAC / 1990 / Official method of analysis / Association of Official Analytical Chemists
Adesogan, A. T. / 2009 / Using dietary additives to manipulate rumen fermentation and improve nutrient utilization and animal performance / Florida Dairy Extension : 13 ~ 38
Agenas, S. / 2006 / Indicators of under nutrition in cattle / Anim. Welf 15 (2) : 149 ~ 160
Baba, E. / 1993 / Increase of mannose residues, as Saltnonella tjyhimurium-adhering factor, on the cecal mucosa of germ-free chickens infected with Eimeria tenella / Am. J. V
Beauchemin, K. A. / 1995 / Fibrolytic enzymes increase fiber digestibility and growth rate of steers fed dry forage / Can. J. Anim. Sci 75 : 641 ~ 644
Adesogan, A. T. / 2009 / Using dietary additives to manipulate rumen fermentation and improve nutrient utilization and animal performance / Florida Dairy Extension : 13 ~ 38
Agenas, S. / 2006 / Indicators of under nutrition in cattle / Anim. Welf 15 (2) : 149 ~ 160
Baba, E. / 1993 / Increase of mannose residues, as Saltnonella tjyhimurium-adhering factor, on the cecal mucosa of germ-free chickens infected with Eimeria tenella / Am. J. V
Beauchemin, K. A. / 1995 / Fibrolytic enzymes increase fiber digestibility and growth rate of steers fed dry forage / Can. J. Anim. Sci 75 : 641 ~ 644
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