Analysis of the recumbent frequency around the onset of postpartum ketosis in dairy cows

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  • TAKAHASHI Tomotsugu
    Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • MAGATA Fumie
    Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • INOKUMA Hisashi
    Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • KUWAHARA Masayoshi
    Graduate School of Agricultural and Life Sciences, The University of Tokyo

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  • 乳牛のケトーシス発症前後における伏臥頻度の解析
  • ニュウギュウ ノ ケトーシス ハッショウ ゼンゴ ニ オケル フクガ ヒンド ノ カイセキ

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<p>Ketosis is one of the major periparturient diseases of dairy cows and increases the risk of other diseases. Recumbency during feeding can be associated with early signs of various diseases. The present study aimed to establish a method for predicting the occurrence of ketosis by long-term monitoring of recumbent frequency in dairy cows during the peripartum period. Holstein cows (four healthy cows and four cows with ketosis) calved between April and August 2020 were examined for metabolic profiles and recumbent frequency from -2 to 2 months postpartum. In cows with postpartum ketosis, changes in blood metabolites indicated decreased liver function from 0 to 1 month after calving. During 2 to 1 months before calving, an increase in recumbent frequency was observed : The percentage of recumbent time after feeding was 13.6 times higher in cows with ketosis than in healthy cows. These results suggest that recumbent frequency during the peripartum period can effectively predict postpartum ketosis in dairy cows.</p>

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