Animal Stress and Light Explained
Practical lighting changes to reduce animal stress in barns include simulating natural daylight patterns, using dimmable flicker-free LEDs, and choosing appropriate light intensity and color for each species.
Adjusting light schedules to provide consistent day and night cycles helps animals maintain regular sleep and feeding patterns, which lowers anxiety and supports overall well-being. For example, a photoperiod of 16-18 hours of light at 150–200 lux followed by 6–8 hours of darkness can optimize dairy cow health and comfort.
Flicker-free, dimmable LED systems allow gradual morning and evening transitions, which prevent abrupt changes and help animals adapt calmly to light shifts. Blue and red light settings can be used during specific times to create relaxing or stimulating atmospheres, depending on the needs of the livestock --- blue light, for instance, is known to keep poultry calm during handling, while red light can reduce disturbance at night for cattle.
Avoid excessively bright lights, as they can disrupt natural behaviors and cause unnecessary stress.
Regular maintenance of fixtures and ensuring uniform lighting coverage will further minimize shadows and dark spots that could stress or frighten animals. This holistic lighting strategy supports healthier, calmer, and more productive livestock overall.
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