データロガによる放牧牛の心拍数測定法の再検討

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タイトル別名
  • Further Studies of a Data-Logging System for Determining the Heart Rate of Cattle Grazed on Pastures
  • データ ロガ ニ ヨル ホウボク ウシ ノ シンパクスウ ソクテイホウ ノ サ

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The heart rate memory apparatus enables a minute-by-minute determination of heart rate in cattle grazed on pastures for up to 24 hours. In the present study, the properties of the apparatus and the accuracy of heart rate determination in a field was investigated using Holstein heifers and adult cows. The A-B lead is suitable for measuring heart rate using this apparatus, because the wave form in the A-B lead is larger and more stable than that in other leads. Heart rates ranging from about 50 beats per minute to 160 could be measured accurately. Daily heart beats (DHB) in the heifers grazed on pastures for 24 hours (which is a day and a night) were about 140, 000, and 0.20 to 0.45% of DHBs were false and excessively counted. These false counted beats occurred mostly during a grazing period. Based on these findings, the heart rate memory apparatus was confirmed to be a suitable tool in measuring heart rates with a high degree of accuracy in cattle grazed on pastures.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 63 (3), 295-300, 1992

    公益社団法人 日本畜産学会

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