PROBLEM TO BE SOLVED: To provide a method for facilitating the measurement of a body fat percentage or body fat amount of a small animal.SOLUTION: A method for measuring body fat of a small animal includes: a step for irradiating a small animal 5 with a near infrared ray L3 a step for receiving diffuse reflection light L4 generated by the reflection of a near infrared ray against a small animal and a step for calculating a body fat percentage or body fat amount of a small animal on the basis of a relational expression using the absorbancy of a near infrared ray.COPYRIGHT: (C)2014,JPO&INPIT【課題】小動物の体脂肪率又は体脂肪量を簡単に測定できる方法を提供する。【解決手段】小動物5に近赤外線L3を照射する工程と、近赤外線が小動物で反射されて生じた拡散反射光L4を受光する工程と、近赤外線の吸光度を用いた関係式から小動物の体脂肪率又は体脂肪量を算出する工程と、を有する、小動物の体脂肪測定方法とする。【選択図】図3
