PROBLEM TO BE SOLVED: To provide a bedding material for animal breeding, which reduces ammonia generation by suppressing the activity of urease enzyme. SOLUTION: The laying material main body 12 and a metal compound having a metal atom and a hydrocarbon group, which is carried or mixed on the laying material main body, are bound to the surface through an oxygen atom and have wavelengths of 450 nm and 550 nm in a visible absorption spectrum. And a photocatalyst particle 14 comprising titanium-based compound particles having an absorption peak at 2700 cm-1 to 3000 cm-1 in the infrared absorption spectrum, and a bed material for animal breeding. [Selection diagram] Figure 1【課題】ウレアーゼ酵素の活性抑制により、アンモニア発生を低減する動物飼育用敷材を提供する。【解決手段】敷材本体１２と、前記敷材本体に担持又は混合され、金属原子及び炭化水素基を有する金属化合物が酸素原子を介して表面に結合し、かつ可視吸収スペクトルにおける波長４５０ｎｍ及び５５０ｎｍに吸収を持ち、赤外吸収スペクトルにおける２７００ｃｍ－１～３０００ｃｍ－１に吸収ピークを持つチタン系化合物粒子からなる光触媒粒子１４と、を有する動物飼育用敷材。【選択図】図１
