The benefits of LED lighting may increase poultry output and revenue
The lighting technology is advantageous in life science applications since LED sources provide light in a narrow spectrum with low energy consumption. In order to save costs and increase output, solid-state lighting is being used in poultry-rearing applications, according to.
By 2030, the demand for food is anticipated to double globally. Producers are using innovative technology to boost output at a lower cost and with less impact on the environment in order to satisfy that demand. The majority of these production innovations concentrate on improving conventional inputs including water, air, nutrients, and shelter. Light is one industrial input that is mostly unknown.
Farmers can significantly increase the production of eggs, meat, and other protein sources while significantly reducing energy use and other input costs by using LED lighting and taking advantage of the special spectral needs of poultry, swine, dairy cattle, fish, or crustaceans. They can also reduce stress and mortality, control circadian rhythm, and reduce stress and mortality by using LED lighting and other inputs.
Agriculture-specific lighting is one of the specialized applications made possible by solid-state lighting (SSL), as mentioned in a June 2013 LEDs Magazine article. Such applications have the potential to provide large financial gains. Along with smaller companies like Once Innovations, Luma Vue, and NextGen Illumination that provide LED lights particularly for the poultry market, major SSL players like Philips and Osram Sylvania have created spectrally-tuned LED lamps for farming and horticulture.
In their barns, many livestock producers continue to use 60W, 80W, and 100W general-purpose residential and commercial incandescent lighting. However, incandescent light is not the same as sunshine, and the best light for people may not always be the best light for animals. These lamps are ideally adapted to human situations. Living in the sunshine, which has a spectrum quite different from that of incandescent light, has allowed animals to develop. All colors are combined in sunlight. The quantity of each hue in normal midday sunshine is shown in Fig. 1a. At this time of day, you'll notice that the blues and greens are brighter than the reds. The quantity of color in normal afternoon sunshine is seen in Fig. 1b. The reds are now more vivid than the greens and blues, as you can see.
Modern barn lighting systems make an effort to resemble the sun's spectrum, which offers a continuous spectrum with no gaps in between and contains all hues. The continuous spectrum of incandescent light (Fig. 2a) produces a deep red color with decreased green and very little blue, successfully simulating sunset sunlight. The noon sun, which is rich in blues and greens and has less red, is not simulated by this spectrum. Some manufacturers attempt to change the spectrum by coating the bulbs, however this method does not result in a continuous spectrum. Additionally, incandescent lights need a fixture that is wet-location rated, burn out often, and are very inefficient (generating more heat than light). Of course, with the prohibition on incandescent light manufacturing, all of that will soon be irrelevant.
Although compact fluorescent lamps (CFLs) are efficient and provide white light, their light output is still optimized for human vision. To create white light, small bands of red, green, and blue are created and combined. Large spectral gaps between the red, blue, and green spikes result in the loss of many of the red, blue, and green wavelengths seen in sunshine (Fig. 2b). The majority of the deeper reds are lost due to the extreme weakness of blue light. In general, CFLs are awful at imitating natural sunshine. They also need an enclosure to be wet rated, are difficult to dim, have minute quantities of poisonous mercury within, are difficult to clean due to their curly design, do not dim effectively, and have a much shorter lifespan when dimmed.
The color spectrum of high-pressure sodium (HPS) bulbs is brightest in the reds and yellows, giving the bulbs their characteristic orange-yellow or amber hue. HPS lights provide outstanding efficiency and high light production. However, most of the color spectrum, particularly the greens and blues, is absent, much as with CFLs. Additionally, HPS lamps may include mercury and/or sodium, are extremely difficult to dim, take a long time to warm up, need a ballast to operate, are expensive up front.
Among the agricultural lighting solutions, LEDs are the most effective and ecologically beneficial since they combine a blue LED with red and green phosphors to produce white light. The spectrum is almost continuous (Fig. 3), with plenty of green and red as well as very bright blues. Without the spectral gaps of other technologies, the LED spectrum offers a near approximation of daylight from a human point of view, even if it is not quite daylight. Additionally, they are the most durable, very tough, resistant to shock and vibration, and allow for color changing and color management. Their lifespan may reach up to 10 years with 24/7 operation. The highest initial investment in LEDs is soon recovered via energy savings, making them the most affordable alternative for agricultural lighting.
