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KMID : 1025520090510010039
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Journal of Animal Science and Technology
2009 Volume.51 No. 1 p.39 ~ p.44
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The Effects of Aqueous Fibrolytic Enzyme Products Supplementation on In vitro Fermentation and Growth Performance of Hanwoo Steers
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Kook Kil
Moon Seung-Ju
Lee Ji-Woong
Chung Wan-Tae
Park Hong-Seog
Kim Kwang-Hyun
Jang Ki-Young
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Abstract
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The objective of this study was to investigate the effects of an enriched diet supplemented with aqueous fibrolytic enzyme products(FEP) on In vitro fermentation and growth performance of Hanwoo Steers. Total mixed ration combined with fibrolytic enzyme products showed a slight increase in the pH level on In vitro fermentation. Acetate ratio in volatile fatty acids, and the concentration of total volatile fatty acids were significantly greater at 12hr and 24hr after cultivation (p<0.05). Dry matter digestibility was significantly increased in groups supplied with aqueous fibrolytic enzyme products at 24hr after cultivation(p<0.05). In a rearing trial, the average daily gain and feed efficiency improved in the treatment groups supplied with aqueous fibrolytic enzyme products. Nutrient digestibility such as DM, crude fiber, NDF, and ADF digestibility were also significantly increased with the addition of aqueous fibrolytic enzyme products(p<0.05).
Therefore, the aqueous fibrolytic enzyme products supplementation on In vitro fermentation is effective in improving the condition of rumainal fermantation. Also two kinds of aqueous fibrolytic enzyme products were found to be effective in improving the average daily gain and feed efficiency in Hanwoo Steers.
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KEYWORD
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Fibrolytic enzyme, In vitro fermentation, Growth performance, Hanwoo
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