What are light and dark

Especially on dark winter days, when the sun shines only briefly or barely, it can be difficult for people in the stable to find their way around. Light is also extremely important for cows, as it not only controls their internal clock, but also affects the metabolism and hormone production. If there is not enough light on dark winter days, this can have a negative effect on reproduction and milk production. Answers to the most important questions about lighting are provided by Dr. Daniel Werner from the North Rhine-Westphalia Chamber of Agriculture.

Do cows see as well as humans?

Dr. Daniel Werner:

No. Cows perceive light differently. The visual acuity of cows depends on the lighting conditions. Because: The cow's eye adapts to different brightness levels around 12 times more slowly than that of humans. This is why cows see worse in daylight than humans. In order to still orientate themselves in the barn, cows use additional senses, sniff and feel and slowly feel their way forward. It is different at night, when they see much better than people because they have a reflective layer in their eyes. Therefore, they do not need any light for orientation at night. When dealing with cattle, people must always bear in mind that cow eyes adapt to light-dark differences much more slowly than human eyes. Therefore, stables should be illuminated as evenly as possible.

Does a red night light bother cows?