are some research excerpts on how fluorescent light effects animals.
Cool white fluorescent light can have an effect on research results.
As unusual as these excerpts sound, scientists do acknowledge similar
biological traits in animals as found in humans.
Poult Sci 1987 Feb;66(2):215-7
Lighting of end of lay broiler breeders: fluorescent versus incandescent.
Ingram DR, Biron TR, Wilson HR, Mather FB. An 18-week experiment
was conducted to investigate the effects of changing from incandescent
to fluorescent lighting on egg production, egg weight, fertility,
and hatchability of end of lay broiler breeders housed in an open-sided
house. Forty-eight-week-old Cobb feather-sexed broiler breeders
were housed, 30 females and 3 males per pen, in a total of 28 pens.
Incandescent lights had been used previously, so pens were randomly
assigned to either fluorescent or incandescent lights giving 20
lx of light at bird level. Lights used were 60 W incandescent and
22 W fluorescent cool-white circular. Body weight and egg production
were measured weekly, and fertility, hatchability, and egg weight
were determined monthly from 48 to 65 weeks of age. No significant
treatment effects were observed on body weight, fertility, hatchability,
or egg weight. A significant reduction in egg production was observed
with fluorescent lighting from Weeks 58 to 65. The reduced egg production
indicated it was detrimental to change from incandescent to cool-white
fluorescent lighting. PMID: 3588487
Poult Sci 1984 May;63(5):920-6
The effect of high and low intensity cool-white fluorescent lighting
on the reproductive performance of turkey breeder hens. Siopes TD.
Large White turkey breeder hens were exposed to incandescent or
cool-white (CW) fluorescent light of either high or low light intensity
as the sole light source. Light treatments were quantified in both
photometric and radiometric units for the entire visible spectrum
as well as the 600 to 700 nm range of the visible spectrum. Photostimulation
with these light sources occurred at 32 weeks of age and the subsequent
effects on body weight, feed intake, and reproductive performance
were observed over a 20-week egg laying period. Body weights and
feed intakes were similar among the treatments. There were no significant
differences in early season egg production (0 to 10 weeks) or fertility,
hatchability, egg weight, and egg specific gravity due to light
intensity or light source over the 20-week test period. However,
CW fluorescent light delayed the onset of egg production from that
of hens exposed to incandescent light (20.7 vs. 19.3 days, respectively)
and significantly depressed late season (10 to 20 weeks) egg production
from that observed in hens on incandescent light (23.9 vs. 31.9
eggs per hen, respectively). As a result, total egg production was
significantly lower in the CW fluorescent (67.9 eggs/hen) than the
incandescent treatment (75.2 eggs/hen). No significant differences
in total eggs per hen occurred between the low and high light intensity
treatments.(ABSTRACT TRUNCATED AT 250 WORDS) PMID: 6728803
Ott, John N, Health and Light, New York: Pocket Book edition by
Simon and Schuster, 1977, p. 98.
John Ott, PhD, dramatizes the importance of full spectrum light.
2000 mice were observed under four different types of light. In
an otherwise identical, controlled environment, the C3H strain of
mice developed spontaneous tumors. ╩
Mice died at ╩╩Light
Type Mice Were Under
7.5 months╩ ╩╩ Pink
8.2 months╩ ╩╩ Standard
cool white fluorescents
15.6 months ╩╩ Full
16.1 months ╩╩ Natural
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