During the survival and growth of fish, light, as an important and indispensable ecological factor, plays an extremely important role in its physiological and behavioral processes. The light environment is composed of three elements: spectrum, photoperiod and light intensity, which play an important role in regulating the growth, metabolism and immunity of fish.
With the development of industrial farming models, the demand for light environment is becoming more and more refined. According to different biological species and growth stages, scientifically setting a reasonable light environment plays a vital role in promoting their growth. In the field of aquaculture, since different aquatic species have different light sensitivities and light preferences, it is necessary to make appropriate light settings according to their light environment requirements. For example, some aquatic animals are more suitable for the spectrum of red light or blue light, and the light environment of the habitat is different, which will affect the light sensitivity and preference of their visual system, and the light requirements of different growth stages will also be different.
Currently, the most widely used aquaculture methods in aquaculture include pond culture, cage culture and factory culture. Pond farming and cage farming mostly use natural light sources, which are difficult to control. In factory farming, traditional fluorescent lamps or fluorescent lamps are still mostly used. These traditional light sources consume a lot of power and are prone to short-lived bulbs. The mercury and other harmful substances released after disposal will cause great pollution to the environment, which needs to be resolved urgently.
Therefore, in industrial aquaculture, selecting the appropriate artificial light source and setting the precise spectral light intensity and photoperiod according to different aquatic species and growth stages will be the focus of future aquaculture research to improve production efficiency and economic benefits of aquaculture, while reducing environmental pollution and achieving green and sustainable development.
Traditional fluorescent lamps VS LED light sources, which one is better in aquaculture?
Traditional fluorescent lamps have long been one of the main artificial light sources used in the aquaculture industry. Their purchase and installation costs are low, but they face many disadvantages. For example, they are prone to short lifespan in humid environments, cannot be dimmed, and may cause stress reactions in fish. In addition, the disposal of fluorescent lamps will also cause serious pollution to water sources.
With the rapid development of optoelectronic technology, light emitting diode (LED) has become the fourth generation emerging light source type, and its application in aquaculture is becoming more and more extensive. As an important industry of my country's agricultural economy, aquaculture has become an important physical means to use LED lights for artificial lighting in the process of factory farming. Compared with traditional light sources, the use of LED light sources for artificial light supplementation can better meet the growth needs of different types of aquatic organisms. Through different adjustments to light color, brightness and duration, it can promote the normal growth and development of aquatic organisms, increase the quality and output of organisms, reduce production costs, and improve economic benefits.
LED light sources also have the advantages of precise control of the light environment, long service life and high energy efficiency, and can be used as an environmentally friendly and sustainable new lighting method. At present, in China, most of the light source lamps in aquaculture workshops are extensive. With the development and popularization of science and technology, LED lamps can significantly increase production and efficiency in the process of aquaculture, and promote fish production to high-quality and environmentally friendly development.
Current status of LED in aquaculture industry
The aquaculture industry is one of the important pillars of the rapid development of my country's agricultural economy, and has become the frontier of innovation and development of the modern aquaculture industry. In the standardized and scientific management of aquaculture, the use of LED lamps for artificial lighting is an extremely important physical means, and it is also an important measure to achieve precise management of aquaculture production. With the inclination of the Chinese government to the development of the agricultural economy, the scientific use of LED lamps has become one of the ways to achieve green and sustainable development.
In view of the differences in the characteristics of enterprise production workshops and natural environments, artificial lighting has become an indispensable link in aquaculture. Both light and dark environments have adverse effects on fish reproduction and growth and development. While achieving production goals, the light environment must also match a series of factors, such as temperature, water quality and feed.
With the development of semiconductor technology and the continuous pursuit of environmental protection and high-efficiency fish production, the use of LED lighting as a physical means to improve the efficiency of aquaculture production has gradually attracted attention and has been widely used.
At present, LEDs have been successfully used in aquaculture. Dalian Ocean University and other universities and scientific research institutes jointly established the R&D and application engineering technology center for fishery and ocean-specific LED lamps, cooperated with vannamei farming enterprises in Zhangzhou, Fujian, and successfully achieved a 15-20% increase in shrimp production and a significant increase in revenue through customized design and installation of intelligent farming lighting systems.
LED lighting technology has a positive impact on the development of aquaculture, production efficiency, cost, quality and safety, and green development. With the continuous advancement of technology, the application prospect of LED lighting technology in aquaculture will be broader.
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