Physical Comparisons of Lighted Incubation in Avian Eggs

Coleman, Marilyn A.; McDANIEL, G. R.; Neeley, W. C.; Ivey, William D.

doi:10.3382/ps.0561421

Cited by 9 publications

(5 citation statements)

References 15 publications

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“…Studies by Lauber and Schutze (1964) and Lauber (1975) showed that light composed entirely of wavelengths within the visible spectrum was not as effective for accelerating embryonic development as a light source containing additional wavelengths outside the visible region. Schutze et al (1962) and Lauber (1975) reported that selected wavelengths of light in the visible spectrum did not accelerate development as much as white light and Coleman et al (1977) showed that light with a wavelength of 295 nm provided the greatest acceleration of embryonic development.…”

Section: Introductionmentioning

confidence: 97%

“…On the basis of these studies by a number of authors, Coleman et al (1977) suggested the use of cool white fluorescent tubes instead of incandescent bulbs to avoid overheating of eggs and to provide the optimum wavelength. They also suggested that the light be placed as close to the eggs as possible so that the light source was no further than 12 cm from the top of the eggs.…”

Section: Introductionmentioning

confidence: 98%

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The Effects of Lighted Incubation on Eggs with Pigmented and Nonpigmented Yolk

1981

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A study was undertaken to determine if light causes embryonic acceleration by working through the xanthophyll pigments in the egg yolk. Using the same type of incubating and lighting system described by other workers, eggs from White Leghorn hens fed diets with and without dietary xanthophyll were exposed to either dark or lighted incubation and allowed to hatch. Results of the study indicated that light does not accelerate embryonic growth through its effect on the xanthophyll pigments in the yolk, but it does support light as a stimulus for embryonic acceleration. (

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

The Effects of Lighted Incubation on Eggs with Pigmented and Nonpigmented Yolk

1981

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“…Colored artificial light has been reported to affect metabolic activity and improve productive performance in poultry for many years. Incandescent lamps [ 1 ], fluorescent lamps [ 2 ], ultraviolet (UV) light lamps [ 3 ], commercial colored lamps [ 4 ] and filtered light [ 5 ] have been successfully used in poultry production. However, the results of studies of the effects of different light spectra on broiler growth have been inconsistent.…”

Section: Introductionmentioning

confidence: 99%

“…Incandescent pink light was shown to decrease chicken hatching weights, while incandescent white light was found to increase chicken hatching weights [ 10 ]. Green light has been found to enhance early chick embryo growth, as did blue [ 11 ] and ultraviolet (UV) light [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Human-Friendly Light-Emitting Diode Source Stimulates Broiler Growth

Pan¹,

Yang²,

Yang³

et al. 2015

PLoS ONE

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Previous study and our laboratory have reported that short-wavelength (blue and green) light and combination stimulate broiler growth. However, short-wavelength stimuli could have negative effects on poultry husbandry workers. The present study was conducted to evaluate the effects of human-friendly yellow LED light, which is acceptable to humans and close to green light, on broiler growth. We also aimed to investigate the potential quantitative relationship between the wavelengths of light used for artificial illumination and growth parameters in broilers. After hatching, 360 female chicks (“Meihuang” were evenly divided into six lighting treatment groups: white LED strips (400–700 nm, WL); red LED strips (620 nm, RL); yellow LED strips (580 nm, YL); green LED strips (514 nm, GL); blue LED strips (455 nm, BL); and fluorescent strips (400–700 nm, FL). From 30 to 72 days of age, broilers reared under YL and GL were heavier than broilers treated with FL (P < 0.05). Broilers reared under YL obtained the similar growth parameters with the broilers reared under GL and BL (P > 0.05). Moreover, YL significantly improved feeding efficiency when compared with GL and BL at 45 and 60 days of age (P < 0.05). In addition, we found an age-dependent effect of light spectra on broiler growth and a quantitative relationship between LED light spectra (455 to 620 nm) and the live body weights of broilers. The wavelength of light (455 to 620 nm) was found to be negatively related (R 2 = 0.876) to live body weight at an early stage of development, whereas the wavelength of light (455 to 620 nm) was found to be positively correlated with live body weight (R 2 = 0.925) in older chickens. Our results demonstrated that human-friendly yellow LED light (YL), which is friendly to the human, can be applied to the broilers production.

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“…Furthermore, in some cases, the lamp's heat production may have been a confounding factor. Coleman et al (1977) already demonstrated that many discrepancies between studies in hatchability, hatch time, and chick quality can be explained through differences in the type of light used and the effect the lamps have on temperature at the embryonic level. As mentioned previously, embryo temperature is a balance between heat production of the embryo and heat transfer to its surroundings (Meijerhof and Van Beek, 1993).…”

Section: Discussionmentioning

confidence: 99%

Bringing eggs and bones to light : affecting leg bone development in broiler chickens through perinatal lighting schedules

Kemp¹,

Brand²,

Roovert-Reijrink³

et al.

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Leg bone pathologies are a common problem in broiler chickens, and they can lead to decreased welfare and poor production performance. It can be speculated that the aetiology of some leg bone pathologies lies, to some extent, in suboptimal early life bone development. One factor that can be speculated to affect bone development, and consequently leg health, in broiler chickens is application of light. Light has several properties, such as light intensity, color, duration, and schedule. The present thesis focuses on lighting schedules. Aim was to investigate how lighting schedules applied during incubation and in the early post hatch period (the brooding period) affected leg bone development throughout a broiler's life and leg health at slaughter age.In 4 studies, effects of eggshell temperature (EST) and lighting schedule during incubation and in the brooding period on leg bone development, leg health, and production parameters were explored. The first study found that an EST of 39.4°C led to lower bone dimensions at hatch than an EST between 37.8 and 38.6°C. It was then decided that incubation experiments on bone development would best be performed at a constant EST of 37.8°C, as this is also an EST that leads to good hatchability and chick quality. In two studies, the effects of circadian lighting schedules during incubation on leg bone development and leg health were investigated. Staining of the embryonic leg bones showed that applying a circadian lighting schedule of 12 hours of light, followed by 12 hours of darkness (12L:12D) resulted in an earlier onset of embryonic ossification of the tibia than continuous light (24L). Compared to 24L, 12L:12D furthermore resulted in higher tibia weight and length, and higher tibial cortical area, cortical thickness, and second moment of area around the minor axis at hatch as revealed by MicroCT scanning. It was furthermore found that 12L:12D resulted in a lower incidence of the leg pathology tibial dyschondroplasia. Continuous darkness (24D) was mostly intermediate. On the other hand, a circadian lighting schedule of 16 hours of light, followed by 8 hours of darkness (16L:8D) did not show the same stimulatory effect on leg bone development, as no differences in gene expression markers involved in embryonic ossification were found, leg bone dimensions at hatch were not increased, and bone mineral content as determined by DXA scanning was not higher for 16L:8D. It can therefore be speculated that the dark period should exceed 8 hours per day during incubation for increased bone dimensions and ossification. However, incidence and severity of the leg bone pathologies in the form of bacterial chondronecrosis with osteomyelitis and epiphyseal plate abnormalities were lowest for broilers exposed to 16L:8D during incubation, and tibial dyschondroplasia tended to be lower for 16L:8D than for 24D. Interactions between incubation and matching or mismatching post hatch lighting schedules were not found. It was speculated that the endocrine factors (pineal) melatonin, growth hormone...

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Physical Comparisons of Lighted Incubation in Avian Eggs

Cited by 9 publications

References 15 publications

The Effects of Lighted Incubation on Eggs with Pigmented and Nonpigmented Yolk

The Effects of Lighted Incubation on Eggs with Pigmented and Nonpigmented Yolk

Human-Friendly Light-Emitting Diode Source Stimulates Broiler Growth

Bringing eggs and bones to light : affecting leg bone development in broiler chickens through perinatal lighting schedules

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