Assessing Photovoltaic Trackers Effects on Open-Air Poultry Welfare

Abstract

Open-air poultry farming is currently developing with the increasing society demand for livestock farming better considering animal welfare. Outside animal comfort and open-air runs exploration could be enhanced by shelters such as trees or photovoltaic (PV) trackers. The aim of this study is to evaluate (i) the microclimates generated under PV trackers, (ii) the effect on laying hens comfort, (iii) the use of panels shadow area by hens. In three experimental sites, microclimates were studied and laying hens were counted in a control area, under a PV tracker and under a tree. Results showed that PV trackers, as trees, lowered summer soil and air temperatures and radiation, decreased the occurrences of stress situations for hens, and that more hens were counted under trackers than in a control area. Methodological improvements can be led to better apprehend differences of area uses by hens.