Signify's LED lighting helps optimize salmon growth from hatchery to on-growing stage
Thursday, June 11, 2020
Signify launched the new Philips Sea cage 340W fish light which helps optimize growth results for land- and marine-based cultivation of salmon and also shows proven results for other fast-growing fish species like seabass and seabream. The unique light distribution helps to prevent exposure to sea lice, reducing treatment up to 50%.
Light is a powerful tool for enhancing fish production and welfare. With an optimized contrast ratio, Philips aquaculture LED lighting supports a lower food conversion ratio and the right light distribution helps to prevent sea lice exposure. With smooth ramp up and low dim levels, it also reduces fish stress levels, improving their welfare. The light spectrum is optimized for the distribution underwater, the eye sensitivity of the fish and the pineal gland photoreceptors, maximizing the contribution towards growth at their best without maturing. Salmon are kept in a perpetual state of summer to prevent spawning and maintaining great taste and texture in the on-growing stage.
Unique in its kind is the light distribution, singly directed downwards in the sea cages or tanks. The optimized light density in combination with the downward light beam ensures that the fish will swim deeper. And when installed below five meters, it reduces the need for sea lice treatments as the fish will mostly swim below the sea lice belt. This also lowers the amount of electricity that is used and ensures that there’s no light pollution created. In tanks, the light distribution addresses the need for lighting in every part of the tank ensuring light can reach where it needs to reach, without the fish or tiny particles obscuring the light.
“The Philips Sea cage 340W fish light is robust and easy to handle. On top of improving growth rates and significantly reducing sea lice exposure, our new energy-efficient light lowers the food conversion ratio resulting in lower production cost. We help our customers to maintain constant production and at the same time improve the welfare and sustainability of the fish,” said Remco Lansbergen, general manager aquaculture at Signify.
Philips aquaculture lighting combines the latest LED technology with research expertise in fish physiology. Signify collaborates with leading universities and institutes by funding PhD and post-doctoral research projects. This includes research into on-growing at Stirling University, Scotland, and research into the effects of light spectrum, uniformity, intensity and dimming on salmon in the hatchery stages at Bergen University in Norway. The research findings show that the lighting helps avoid stress in fish resulting in a 15% reduction in mortality from the hatchery to on-growing stage.