Corticosterone Levels, Heterophil/Lymphocyte Ratios and Growth Rates in Lohmann Indian River Chickens Raised under Monochromatic Blue Light
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چکیده
منابع مشابه
Growth rates of phytoplankton under fluctuating light
1. The effect of light fluctuations on the growth rates of four species of freshwater phytoplankton was investigated. Experimental light regimes included constant irradiance and fluctuations of a step function form, with equal proportion of high (maximum of 240 mmol photons m s) and low light (minimum of 5 mmol photons m s) (or dark) in a period. Fluctuations of 1, 8 and 24-h periods were impos...
متن کاملDoes pupil constriction under blue and green monochromatic light exposure change with age?
Many nonvisual functions are regulated by light through a photoreceptive system involving melanopsin-expressing retinal ganglion cells that are maximally sensitive to blue light. Several studies have suggested that the ability of light to modulate circadian entrainment and to induce acute effects on melatonin secretion, subjective alertness, and gene expression decreases during aging, particula...
متن کاملThe effect of a green and blue monochromatic light combination on broiler growth and development.
Previous reports have suggested that green light enhances broiler growth at an early age, whereas blue light enhances growth at older ages. The aim of this study was to examine the effect of a switch in monochromatic light at 2 ages on growth and development of broilers. Male chicks (Anak, n = 640) were used. After hatch, chicks were weighed, wing-banded, and blocked into treatment groups. Chic...
متن کاملBrain Responses to Violet, Blue, and Green Monochromatic Light Exposures in Humans: Prominent Role of Blue Light and the Brainstem
BACKGROUND Relatively long duration retinal light exposure elicits nonvisual responses in humans, including modulation of alertness and cognition. These responses are thought to be mediated in part by melanopsin-expressing retinal ganglion cells which are more sensitive to blue light than violet or green light. The contribution of the melanopsin system and the brain mechanisms involved in the e...
متن کاملEffects of Green or a Combination of Green and Blue Monochromatic Light on Growth, Carcass Yield, the Heterophil- to-Lymphocyte Ratio and Eye Morphology of Thai Indigenous Chickens
In total, 240 one day old Thai-native chickens (Gallus domesticus) were housed in floor pens, located in a light-proof shed and exposed to one of the following lighting treatments: 1) white fluorescent light throughout the 16 wk of the experimental period (WF), 2) green light provided by a light emitting diode (LED) throughout the experimental period (GLED) and 3) green LED light for the first ...
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ژورنال
عنوان ژورنال: International Journal of Poultry Science
سال: 2015
ISSN: 1682-8356
DOI: 10.3923/ijps.2015.639.643