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http://dx.doi.org/10.5536/KJPS.2010.37.4.383

A Study of Different Sources and Wavelengths of Light on Laying Egg Characteristics in Laying Hens  

Kim, Min-Ji (National Institute of Animal Science, RDA)
Choi, Hee-Chul (National Institute of Animal Science, RDA)
Suh, Ok-Suk (National Institute of Animal Science, RDA)
Chae, Hyun-Suk (National Institute of Animal Science, RDA)
Na, Jae-Cheon (National Institute of Animal Science, RDA)
Bang, Han-Tae (National Institute of Animal Science, RDA)
Kim, Dong-Wook (National Institute of Animal Science, RDA)
Kang, Hwan-Ku (National Institute of Animal Science, RDA)
Park, Sung-Bok (National Institute of Animal Science, RDA)
Publication Information
Korean Journal of Poultry Science / v.37, no.4, 2010 , pp. 383-388 More about this Journal
Abstract
The chicken eye can discriminate light color, and different light wavelengths may affect reproduction ability. This study was carried out to identify effect of monochromatic light using light emitting diode (LED) in laying hens. Chickens were exposed to white light (WL), blue light (BL), yellow light (YL), green light (GL) and red light (RL) made by using LED as well as incandescent light (IL) (control). All light sources were equalized to a light intensity of 20 lux. The results indicated that the age of first egg laying and 50 % egg laying in laying hens treated under RL is significantly younger than under other lights (P<0.05). And the ovary weight of laying hens reared under RL is significantly heavier than under other at from 16 to 20 wks (P<0.05). The largest number of eggs production was produced in a group with treated with RL by 59 wks of age compared with any other group. The egg weight of YL was greater than other treatment groups from 26 to 45 wks (P<0.05). The egg shell from hens treated with RL was the strongest and thickest at 20 wk (P<0.05). These results suggest that the egg quality of laying hens reared in different spectrum of LED can be different and RL may enhance the laying performance.
Keywords
laying hen; light; wavelength; light emitting diode (LED); egg;
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