Gait analysis of poultry.

Lameness is a major problem in the UK poultry industry, however, relatively few objective studies have been undertaken into the biomechanics of normal walking in these birds. In this study, the use of a pedobarograph as a novel method of gait analysis in poultry was investigated. Unlike most systems, the pedobarograph has a recording surface with a high degree of spatial resolution, allowing pressure patterns to be established for various regions of the foot. The highest pressures were found to act on the medial toe (149.4-218 kN m(-2)) and back toe (146.1-195.5 kN m(-2)). The metatarsal pad, a region often associated with lesions, was subject to lower pressures (16.3-131.2 kN m(-2)). Maximum net forces of 116-145 per cent of bodyweight were found during normal walking, an order of the same magnitude as human bipeds. Routine spatial parameters were also measured, allowing further characterisation of the gait patterns.