Abstract: The invention provides an illumination system comprising: a visible light source configured to emit visible light; a blue light source configured to emit monochromatic blue light; a controller configured to control the visible light source according to a predetermined circadian schedule for entraining a circadian rhythm of a bird; wherein the predetermined circadian schedule consists of a predetermined period of light and a predetermined period of dark, wherein the controller is configured to: (i) control the visible light source to emit the visible light for the predetermined period of light, and not to emit the visible light for the predetermined period of dark; (ii) control the blue light source to emit the monochromatic blue light at a blue light intensity for at least one subperiod within the predetermined period of dark.

Abstract: The invention provides a lighting device for illuminating an animal stable, wherein the lighting device comprises a projection unit and a control unit; wherein the projection unit is configured to project a dynamic light spot within the animal stable for a period of time, wherein the period of time comprises a first subperiod followed by a second subperiod; wherein the control unit is configured to control the projection unit, during the first subperiod of time, to project the dynamic light spot moving with a pseudorandom or random movement that is confined to a first surface area within the animal stable; and wherein the control unit is configured to control the projection unit, during the second subperiod of time, to project the dynamic light spot moving with a curvilinear or linear movement out from the first surface area.

Abstract: A lighting system (100) for controlling the movement of poultry (190). One or more properties of poultry (190) are obtained and used to define one or more characteristics of a light beam (115) or light beams (115) and thereby the light spot(s) (116) formed from the light beam(s) (115). The light beams (115) are configured to have a beam divergence of less than 15°.

Abstract: A lighting system (100) for controlling the movement of poultry (190). One or more properties of poultry (190) are obtained and used to define one or more characteristics of a light beam (115) or light beams (115) and thereby the light spot(s) (116) formed from the light beam(s) (115). The light beams (115) are configured to have a beam divergence of less than 15°.