Abstract: The present invention refers to a modular element to build groups of cages for farm animals, such as fowls, rabbits, etc, arranged in rows of cells for the animals, forming sets, being the rest of the parts support structures and accessories to feed said animals; being each module made up of one solid monolithic piece, preferably of injected plastic, of prism like shape with horizontal axis and two opposite bases that are parallel and vertical surfaces; being the lateral sides made up of grids and being one of the bases completely open and the other one serving as a separating wall between two successive cages with roofs and floors forming surfaces, including cross reinforcements and means for fixing purposes, removable from the support structure.