PROBLEM TO BE SOLVED: To improve the quality and productivity of livestock products. An information processing system includes a teaching information acquisition unit that acquires teaching information indicating a combination of breeding information regarding animal breeding and meat information regarding the animal meat, and the breeding information and the meat based on the teaching information. A learning unit that learns the correspondence of information and outputs the correspondence information as a learning result, a correspondence information storage unit that stores the correspondence information in which the breeding information and the meat information are associated with each other, and an acquisition that acquires the meat information. It is provided with a unit and an output unit that outputs the breeding information based on the meat information acquired by the acquisition unit and the corresponding information. [Selection diagram] Fig. 1【課題】畜産物の品質や生産性を向上する。【解決手段】情報処理システムは、動物の飼育に関する飼育情報と前記動物の肉に関する肉情報の組み合わせを示す教示情報を取得する教示情報取得部と、前記教示情報に基づいて前記飼育情報と前記肉情報の対応関係を学習し、学習結果として対応情報を出力する学習部と、前記飼育情報と前記肉情報が対応付けられた対応情報を記憶する対応情報記憶部と、前記肉情報を取得する取得部と、前記取得部が取得した肉情報と前記対応情報とに基づいて、前記飼育情報を出力する出力部とを備える。【選択図】図1