PROBLEM TO BE SOLVED: To provide an estrus condition detection method of livestock, an estrus condition detection device of the livestock and an estrus condition detection system of the livestock.SOLUTION: An estrus condition detection method of livestock includes the steps of: acquiring data containing a body temperature and an electric resistance value in the vagina of the livestock being an inspection object specifying a time change of the body temperature and the electric resistance value based on the data acquired performing pattern matching of the specified body temperature and the electric resistance value to the time change, by using the pattern of the change of the body temperature and the electric resistance value in the vagina of the livestock being in the estrus condition and being the same kind of the inspection object generated previously and detecting the estrus condition of the livestock being the inspection object based on results of the pattern matching.SELECTED DRAWING: Figure 5【課題】家畜の発情状態検出方法、家畜の発情状態検出装置および家畜の発情状態検出システムを提供する。【解決手段】家畜の発情状態検出方法を、検査対象である家畜の膣内の体温および電気抵抗値を含むデータを取得し、取得したデータに基づいて、体温および電気抵抗値の時間変化を特定し、あらかじめ生成した発情状態にある検査対象と同種の家畜の膣内の体温および電気抵抗値の変化のパターンを用いて、特定した体温および電気抵抗値の時間変化に対するパターンマッチングを行い、パターンマッチングの結果に基づいて、検査対象である家畜の発情状態を検出する家畜の発情状態検出方法とする。【選択図】図5
