The Effect of Monochromatic and Mixed LED Light Colour on the Behaviour and Fear Responses of Broiler Chicken

Abstract

This study observed the effect of different LED light colour on the behaviour and fear responses of broilers. In experiment 1, 400 broilers were placed into eight different light treatments. In experiment 2, six different light colours with five different age groups were considered. In experiment 1, use of a red and red-yellow mixed light significantly increased walking behaviour. Consequently, sitting and standing behaviour were found to be wavelength dependent, whereby short wavelength (blue, green-blue) treated birds spent more time sitting and standing than that under long wavelength (red, red-yellow). Consistently in experiment 2, birds spent more time feeding under the green treatment than with other treatments. Walking behaviour was significantly decreased and sitting and standing behaviour was increased under the blue light. Age also influenced the behaviour of broiler: young birds were more active than older birds. In addition, ground pecking and wing stretching behaviour were influenced by the wavelength of the light. Time of day did not influence the behaviour of the broilers. Under the red and red-yellow light treatments, birds spent longer in tonic immobility. Thus, the results suggest that red and red-yellow light activated the broiler's movement and fear responses while blue and greenblue decreased the movement and they spent more time sitting.

Effect of Various Monochromatic LED Light Colors on Performance, Blood Properties, Bone Mineral Density, and Meat Fatty Acid Composition of Ducks

“…In our behavior observation trial, red and redyellow light activated the bird's movement and fear responses while blue and green-blue decreased the movement and they spent more time sitting , Prayitno et al, 1997 and thus impact on the welfare indicators (tibia dyschondroplasia, gait score) of broiler's (Sultana et al, 2016). However, we did not investigate the effect of different light colors on duck performance.…”

A Comparison of Monochromatic and Mixed LED Light Color on Performance, Bone Mineral Density, Meat and Blood Properties, and Immunity of Broiler Chicks

“…However, tibial BMD was not significantly influenced by light treatment in experiment 2. Thus, wavelength might influence BMD in birds, and our results indicate that Y light would increase BMD due to the increased physical activity of the broiler chicks (Sultana et al, 2013) and thus increased bone tissue development (Bizeray et al, 2000). On the other hand, several authors (Frost and Roland, 1991;Prayitno et al, 1997) reported that body weight is significantly correlated to both tibia breaking strength and bone density.…”

“…In follow up studies, serum GLU content was decreased under the B light treatment. Although the exact mechanism by which light color influences blood properties is unknown, it thought that the B light treatment calms the chickens (Prayitno et al, 1997), reduces anxiety (Sultana et al, 2013), and, thus, decreases blood pressure and serum glucose, HDL, and LDL levels. Consistent with the present results, Naveen et al (2006) conducted an experiment on humans and reported that B light significantly reduces breathing rate and diastolic blood pressure and that this mechanism may influence serum GLU and cholesterol concentrations.…”

Effects of Various LED Light Colors on Growth and Immune Response in Broilers

“…The color of monochromatic and mixed LEDs affects growth, development, and behavior in chickens (Rozenboim et al, 2004;Cao et al, 2008;Sultana et al, 2013). Changing the lighting regime to an LED system may impact not only growth and development but also immune function in broilers.…”