Depth analysis: LED light and let you eat the delicious chicken

Some time ago the hubbub of "frozen zombie meat" incident, now think of it also a lingering fear?! Although the freezing time is finally exaggerated, the freezing time seems to be the unspoken rule of the poultry industry. Food safety really worrying!

LED can grow green and safe vegetables, so if you don't want to eat vegetables and eat chicken, is there any way LED can do it? The answer is yes! Magic LED allows you to eat delicious chicken chicken!

Don't laugh! Please ask me to raise chickens! Today, let's talk about the Chinese experts' chicken farming law, and tomorrow, how will Americans raise chickens?.

The mechanism of light affecting the physiology of laying hens

The influence of illumination on the changes and regulation process of reproductive hormones in poultry was very significant, and the different light intensity and illumination time had direct influence on the performance of hens. The mechanism may be understood in general: birds generally have two photoreceptors: 1., the retina receptor - the eye; and 2., the hypothalamus receptor. Light stimulation of the optic nerve to hypothalamus; in addition, the light can also act on the pineal gland and hypothalamus. The hypothalamus stimulates the secretion of gonadotropin releasing hormone, which reaches the anterior pituitary gland through the portal system of the pituitary gland, causing follicular development and ovulation. The development of the follicle to produce estrogen, the hen oviduct development and maintain their skills, make the hen comb red, open toe and other sexual characteristics appear. Estrogen can also promote the metabolism of calcium, is conducive to the formation of eggshells. Ovulation hormone causes the hen to ovulate.

Several light related factors affecting the production of laying hens

1, light intensity: generally marked by lux, according to the age of the chicken is different, 20-30lux is commonly used in poultry farming standards. Due to the difference in the number, type and location of the light source, the illumination intensity in the henhouse is very different. So, our experience is, according to the source, tested by computational scientific and professional illumination instrument, to determine the height of the light inside the house layout, distance.

2, light time: different growth stages, layers of light requirements are not the same, and different chicken species, lighting requirements are not the same. In this regard, there are already a number of relevant standards for reference, and here will not be repeated.

3, color: people have three kinds of receptors, so the trichromatic vision, visible spectral wavelength together perceived by the human eye is 400 760nm between the different wavelengths of the electromagnetic waves, caused by the human eye to color the feeling is different, and the range of visible light waves with chicken eyes can discern the visible light range is not the same. Birds are four color vision animals. Four kinds of cones, they can let them see the red green blue and ultraviolet light. Different color perception also constitutes the different feedback of layers. In 1986, American scholar MarcO.North compiled a chart in which he pointed out the effects of these colours on certain properties and traits of poultry.

4, strobe: strobe is pointing light source luminous flux fluctuation depth, fluctuation depth is bigger, strobe more serious, and the electric light source technology quality is directly related. The electronic rectifier is not good, the voltage fluctuation is unstable, the tube is aging, the frequency of the power grid is unstable, all of which may cause the strobe of the lamp, and the strobe effect is harmful. The human eye can not tell the less obvious strobe phenomenon, and reliable data show that chickens can see the strobe of different light sources, and this strobe phenomenon can affect the behavior of chickens. Therefore, whether or not the strobe can be used to judge whether a light source is healthy or not is one of the standards.

What is the best artificial light for laying hens?

With the domestic farming scale and intensive enhancement, enclosed house appeared in large numbers, the maximum block inside and outside her exchange environment at the same time, also in the henhouse "small environment" to put forward higher requirements, in addition to the implementation of the indoor temperature and humidity, ventilation to control more accurate, a set of uniform and reasonable illumination, precise control of the artificial illumination system is also essential.

At present, artificial light is almost realized by lighting, we used lamps generally have several: incandescent lamps, halogen lamps, energy-saving lamps, cold cathode fluorescent lamp (CCFL), LED (light emitting diode).

Incandescent lamp

The working principle of incandescent lamp filament is electrically heated to incandescence, visible light emitted by thermal radiation, which has the advantages of low price, high versatility, fast startup, significant advantages of good color, the spectrum is continuous and uniform, with excellent color rendering. Therefore, incandescent lamps were widely used in livestock and poultry homes in the early days.

But since the work of incandescent lamp filament temperature is very high, most of the energy in the form of infrared radiation is wasted, so the power conversion efficiency is very low, only about 2% of the electricity energy into light energy; at the same time because the filament temperature is high, the evaporation is also very fast, so life is greatly shortened, usually life in 1000 hours, but the light effect in about 12 per watt (Lm).

At present, in the global efforts to promote energy-saving emission reduction, and actively respond to climate change situation, many countries have introduced the elimination of incandescent lamp roadmap to accelerate the elimination of inefficient lighting products. China has also started the implementation of green lighting project since 1996 to promote further energy conservation and emission reduction. Therefore, the incandescent lamp has gradually faded out of the range of daily life and production.

Halogen lamp

Halogen lamps are basically a variant of incandescent lamps, which are heated while retaining a hot light source