Calculation Method for Chicken Perceived Light Intensity

Poultry has superior visual function. Its visible spectrum is wider than humans (380–760 nm) and its sensitivity is high. To study chicken perceived light intensity, seven light intensities from full-spectrum white light, monochromatic blue light and monochromatic green light were set-up. Measurement and comparison of differences between chicken perceived light and human perceived light were conducted. Results showed that the difference between them was significant (P<0.01). Both wavelength band and light intensity had effect on the ratio of chicken perceived light and human perceived light (P<0.01). Therefore, lx-meter and photometric unit lx used in poultry production and research were not appropriate. In order to scientifically set poultry house lighting conductions and reasonably evaluate the illumination environment, the actual chicken perceived light intensity should be considered and applied.