Sow lameness is the second most common cause of culling after reproductive failure. While good conformation and genetics contribute substantially to reducing lameness in sow herds, hoof problems commonly arise in fully slatted concrete systems. Pressure exerted from the concrete flooring generates a response in the hoof to increase horn growth. Combined with unbalanced weight distribution this can lead to malformations of the foot such as claw overgrowth and heel erosion. Little research has been conducted on the impact of early intervention and prevention of sow lameness during gestation. Historically, there was little option to treat sows with hoof problems due to the unwillingness of sows to have their feet held. The Zinpro Corporation, Minnesota, USA
have now developed the first chute to restrain sows allowing hoof trimming to take place, and a range of corrective trimming protocols to prevent and restore correct hoof conformation in sows. The use of corrective claw trimming can be used as a preventative or early treatment option for lame sows, and could significantly increase sow productivity and longevity.