Stable arrangement and method of animal breeding on such stable arrangement

A stable arrangement for free-range breeding of animal comprising an outwardly delimited floor (7) having a surface of which a resting area of the floor surface constitutes a significant part of the area of the floor surface. The area has a substantially plane surface with buried drains (6) for draining of liquids of the floor surface. The arrangement further comprises an automatic floor cleaning device (3) which is arranged to during operation of the stable to regularly cleaning substantially all of the resting area of the floor surface. In an embodiment the arrangement is used in a method for breeding animals in which the animals are fed with wet feed which immediately before has been subject to an enzymatic treatment to alter at least some of the phosphor in the feed bound in phytin to a condition in which it may be absorbed by the digestive system of the animals.