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Changes in Serum Metabolites and Growth Characteristics of Korean Native Steers Fed Alcohol-fermented Feeds

  • Lin, G.Z. ;
  • Kim, B.W. ;
  • Kim, C.H. ;
  • Kim, H.S. ;
  • Sung, K.I. ;
  • Ohh, S.J. ;
  • Hong, B.J. ;
  • Shin, J.S.
  • Received : 2003.06.25
  • Accepted : 2004.02.23
  • Published : 2004.05.01

Abstract

This study was carried out to assess whether feeding of alcohol-fermented feeds (AFF) affects the nutritional metabolism and growth characteristics of Korean native steers. Ten steers were randomly assigned to one of two treatment groups. The dietary treatments were AFF (50% commercial beef cattle feed+30% alcohol-fermented soybean curd dregs+20% rice straw) and control (80% commercial beef cattle feed+20% rice straw). The change of serum metabolites and growth characteristics were measured every two months during the whole twelve months experimental period and the relationships between serum metabolites and growth characteristics were simultaneously analyzed. Four hours after feeding AFF, serum alcohol concentration reached its peak with a significantly higher value than that after control feeding (11.9 and 4.9 mg/dl, respectively). Serum glucose and inorganic phosphorus (IP) concentrations (63.1 and 8.4 mg/dl, respectively) of steers fed AFF were higher than those (56.6 and 7.0 mg/dl) fed the control diet. In both treatments, the serum glucose concentration rapidly increased when body weight (BW) of the steer reached about 600kg, while IP concentrations were rapidly diminished at that BW. Lower concentrations of both blood urea nitrogen (BUN) and cholesterol were observed in steers fed AFF up to 450 kg of BW. The IP concentration was correlated with concentrations of BUN, cholesterol and glucose in AFF fed cattle but not in the cattle fed control diets. Average daily gain was higher in steers fed AFF than steers fed control, particularly during the growing stage of cattle. These findings indicated a capability of AFF to improve BW gain of Korean native steers by decreased protein degradation as well as increased fat synthesis.

Keywords

Alcohol-fermented Feeds;Korean Native Steers;Serum Metabolites;Growth Characteristics

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Acknowledgement

Supported by : Kangwon National University