Internal Medicine : Characteristics of Fluid Composition of Left Displaced Abomasum in Beef Cattle Fed High-Starch Diets

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  • ICHIJO Toshihiro
    Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka 020–8550, Japan
  • SATOH Hiroshi
    Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka 020–8550, Japan
  • YOSHIDA Yuki
    Veterinary Clinical Training Center, Miyagi Prefectural Federation of Agricultural Mutual Aid Association, Oohira, Miyagi 981-3602, Japan
  • MURAYAMA Isao
    Veterinary Clinical Training Center, Miyagi Prefectural Federation of Agricultural Mutual Aid Association, Oohira, Miyagi 981-3602, Japan
  • KIKUCHI Tomoko
    Miyagi Prefectural Federation of Agricultural Mutual Aid Association, Tome, Miyagi 987-0511, Japan
  • SATO Shigeru
    Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka 020–8550, Japan

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  • Characteristics of Fluid Composition of Left Displaced Abomasum in Beef Cattle Fed High-Starch Diets

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To clarify the pathophysiology of left displaced abomasum (LDA), beef cattle fed high-starch diets were examined. The abomasal pH in beef cattle with LDA was lower than that in non-LDA reference animals (data from beef cattle at an abattoir), suggesting that it facilitated acidity. Bacteriological examinations of the abomasal fluid in cattle with LDA revealed the presence of Pseudomonas spp., Clostridium spp. and Candida spp., presumably reflecting the accelerated influx of ruminal fluid into the abomasum. Biochemical analyses of serum revealed that LDA cattle had higher lactic acid and lower vitamin A and E levels than non-LDA reference animals. These results indicate that beef cattle with LDA may suffer from vitamin A and E deficiencies due to maldigestion of starch and the high acidity of abomasal fluid.

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