The influence of microclimate on the development of foot pad dermatitis in broilers

Abstract

Footpad dermatitis and lameness are a major welfare concern in broiler chicken farming. In general, footpad lesions are linked to poor environmental conditions. Ulcers that arise from advanced lesions can negatively affect the gait of the birds, with effects on the animal welfare, including, in the worst cases, inability to reach the feed or water.In this study, the degree of footpad dermatitis and lameness was manually scored on four broiler farms across Europe, as part of an EU-wide welfare assessment programme (Welfare Quality® protocol). Assessment of animal welfare is typically based on manual scoring, which requires a lot of trained manpower/labour. Precision Livestock Farming (PLF) can combine information technologies into on-line automated tools that can be used to control, monitor and model the behavior of animals and their biological response without stressing, disturbing or handling the animals. The association between the PLF and the Welfare Quality® protocol was investigated to assess whether animal welfare could be better ensured if they were closely monitored with state of the art technology that gives rapid feedback to the farmer. Thus, the aim of this study was to find the association between environmental predisposing factors, measured continuously (such as the indoor temperature and humidity) and leg problems, scored manually during the welfare assessment procedure, in order to find an automated prediction system to detect those lesions. Even if genetics is a heavy predisposing factor for leg disorders, environmental condition could trigger the presence of lesions. Indeed, immobility on litter of poor quality might cause footpad dermatitis affecting the gait of birds. The association between automated control of the environmental conditions and the welfare assessments could be the basis for the development of models and algorithms capable to automatically detect thresholds above which lesions are mostly probable.

Kanatlılarda kontakt dermatit

“…Hızlı büyüyenlerde canlı ağırlık arttıkça yürüme yeteneğinde bozulmalar meydana gelmekte ve bunun sonucunda da ayak tabanı ve diz yanık oranları artmaktadır (6,45). Yapılan çalışmalarda kemik gelişiminin, hızlı büyüyen etçi piliçleri olumsuz etkilediği bu nedenle yürüme kabiliyetinde bozulma olduğu (66), bacak zayıflığı ve sakatlığının ayak tabanı ve diz yanıklarına duyarlılığı artırdığı bildirilmiştir (43,32). Erken büyüme dönemindeki hareketlilik, özellikle kemik ve kasları güçlendirerek dermatit oluşumunu engellemektedir (58).…”