scholarly journals Growth and Photosynthetic Efficiency of Two Lettuce Cultivars Under Light–Emitting Diode Monochromatic Light

2021 ◽  
Vol 66 (1) ◽  
pp. 11-20
Author(s):  
Chun–Yu TSAI ◽  
Yung–Fu YEN ◽  
Chyung AY ◽  
Ikuo MIYAJIMA ◽  
Kuang–Liang HUANG
Keyword(s):  
Photosynthetic Efficiency ◽  
Light Emitting Diode ◽  
Monochromatic Light ◽  
Light Emitting

scholarly journals The effect of monochromatic light-emitting diode light on reproductive traits of laying hens

2014 ◽  
Vol 23 (3) ◽  
pp. 367-375 ◽  
Author(s):  
Diyan Li ◽  
Long Zhang ◽  
Mingyao Yang ◽  
Huadong Yin ◽  
Huailiang Xu ◽  
...  
Keyword(s):  
Laying Hens ◽  
Light Emitting Diode ◽  
Monochromatic Light ◽  
Reproductive Traits ◽  
Light Emitting

Effect of various monochromatic light-emitting diode colours on the behaviour and welfare of broiler chickens

2020 ◽  
Vol 100 (4) ◽  
pp. 615-623
Author(s):  
Shabiha Sultana ◽  
Md. Rakibul Hassan ◽  
Byung Soo Kim ◽  
Kyeong Seon Ryu
Keyword(s):  
Broiler Chickens ◽  
Light Emitting Diode ◽  
Monochromatic Light ◽  
Growth Period ◽  
Broiler Chicks ◽  
Light Emitting ◽  
Gait Score ◽  
Set Up ◽  
Effect Of Light ◽  
Sitting Behaviour

This study was conducted to evaluate the effect of different monochromatic light-emitting diode colours on the behaviour and welfare of broiler chicks. A total of 750 one-day-old chicks were used and lighting was set up as follows: pure blue (PB, 440–450 nm), bright blue (460–470 nm), sky blue (480–490 nm), greenish blue (500–510 nm), and green (530–540), while fluorescent white (400–700 nm) was used as a control. Birds were placed into 30 independent light proof pens and each light treatment was replicated five times with 25 birds in each pen. Video was recorded and behaviour was evaluated twice per day and observed five consecutive days in a week. Broiler welfare was evaluated using the characteristics of gait score, tibia dyschondroplasia, tonic immobility duration, and heterophil:lymphocyte ratio. In results, sitting, walking, and ground pecking behaviour were influenced by the light colour from 0 to 7 d. Extending the rearing period from 8 to 21 d resulted in increased sitting behaviour and decreased walking and pecking behaviour in chicks in the PB treatment (P < 0.05). When the growth period was extended further (22–42 d), sitting behaviour increased when chicks were exposed to PB light (P < 0.05). The effect of light colour did not significantly influence welfare of broiler chicks. Thus, the present results suggest that PB light colour decreased broiler chickens movement and thus increased duration of sitting behaviour. These results would be helpful to choose light colour for broiler producers.

scholarly journals EXPERIMENTAL MONOCHROMATIC LIGHT-EMITTING DIODE FIXTURE IMPACTS PEKIN DUCK STRESS AND EYE DEVELOPMENT

2021 ◽  
pp. 101507
Author(s):  
Gabrielle M. House ◽  
Eric B. Sobotik ◽  
Jill R. Nelson ◽  
Gregory S. Archer
Keyword(s):  
Eye Development ◽  
Light Emitting Diode ◽  
Monochromatic Light ◽  
Pekin Duck ◽  
Light Emitting

scholarly journals Performance of Broilers Reared under Monochromatic Light Emitting Diode Supplemental Lighting

2015 ◽  
Vol 17 (4) ◽  
pp. 553-558 ◽  
Author(s):  
BDM Guevara ◽  
PS Pech ◽  
BR Zamora ◽  
SLF Navarrete ◽  
SHF Magaña
Keyword(s):  
Light Emitting Diode ◽  
Monochromatic Light ◽  
Light Emitting ◽  
Supplemental Lighting
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