Using LED style lighting reduces electrical usage by 75-80% compared to incandescent bulbs and 50-60% over spiral CFLs. In most situations, the financial payback period will be between one to two years.
While all LED lights will achieve this expected energy savings, Once Inc. offers their AgriShift Dim-to-Calm system specifically designed for use in swine facilities.
Domestic swine were developed from wild boar species, which occupy shaded habitats and are most active at dawn and dusk. This fact suggests that swine have a visual system that is best adapted to dim light rather than the bright light of mid-day or darkness of nocturnal light.
While humans see light primarily in the green and yellow spectrums, swine’s highest sensitivity is focused on the blue and green parts of the scale with little recognition of red shades. In other words, pigs perceive red lighting as darkness.
Dim-To-Calm lighting mimics sunrise to sunset photoperiods.
Photoperiod requirements have not been well studied in swine, but it is evident a cyclical light: dark cycle should be provided. At all stages of production, swine benefit from at least eight hours of light and at least eight hours of darkness. The transition from light to dark periods should be gradual, much like natural sunrise and sunset, to reduce stress caused by sudden changes in light.
AgriShift Dim-to-Calm LED technology provides producers a method to automatically control light intensity, color spectrum and photoperiod length for swine-specific lighting. The dimming capability simulates a sunrise-to-sunset scheme and is regulated through the house controller by use of a slave dimmer or by an AgriShift master control. Additionally, the shifted spectrum provides a service light (red color) that allows workers to have continual access to the facility after hours without disturbing or interrupting the sleep cycles of the pigs. Some producers have also utilized an additional period of light at night during hot weather. By setting up a shorter sunrise-to-sunset sequence during the cooler evening hours, they can encourage finishing pigs to consume more feed.
10 watt LED fixture with slave dimmer
The AgriShift LED lights are 10-watt jelly jar type fixtures with output equal to a 75 watt incandescent. It’s an innovative design with the minimal heat of LEDs allowing the use of a low-profile plastic jar measuring only 2 inches compared to a typical 5-inch to 7-inch long jelly jar. Replacement is simple with the provided Edison pigtail connector screwing into the existing light socket, twisting the jelly jar adapter in place and connecting the base lamp to complete the installation. The expected life of the bulbs is 50,000 hours and is backed by Once’s 5-year replacement warranty.