The present invention without changing the rack, is to provide a breeding equipment for small laboratory animals that can change the breeding space. The invention relates to a top plate, a rack formed by a plurality arranged shelves at equal intervals in the vertical direction between the four columns, on both sides of the shelf plate, from the front side of the rack to the back side the side plates standing ridges towards the, a plurality of pairs provided at a predetermined interval, it is possible to place the floorboards 8 between the side plates standing ridges, and fit the side plate 10 on the side plate standing ridge was this arranged and standing by fitting the groove, and a front plate 7 and the back plate 9 linked to become breeding cage 6 Metropolitan to this side plates 10. And, when you concatenate remove the side plates 10 between the breeding cage 6 adjacent, fitting the gap frame in the gap between the breeding cage 6. .BACKGROUND 2【課題】ラックを変更することなく、飼育スペースを変更できる実験小動物用飼育装置を提供する。【解決手段】天板を有し、4本の支柱の間に上下方向に等間隔で棚板を複数配列してなるラックと、この棚板の表裏両面に、ラックの正面側から背面側へと向かう側面板起立用突条を、所定間隔をあけて複数対設け、この側面板起立用突条間に床板8を配置すると共に、側面板起立用突条に側面板10をこれ設けた嵌合溝を嵌合して起立し、この側面板10に正面板7と背板9を連結してなる飼育ケージ6とからなる。そして、隣接する飼育ケージ6間の側面板10を外し連結するときは、飼育ケージ6間の隙間に隙間枠を嵌合する。【選択図】図2
