Responses of domestic poultry to various light sources

Pd, Lewis; Morris, Trevor

doi:10.1079/wps19980002

Cited by 68 publications

(36 citation statements)

References 59 publications

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“…Higher body weight was found in hens exposed to the B treatment, and these hens matured 15 day later compared to those under R light. This may have occurred due to the higher circulating FSH levels and faster rate of follicular recruitment under the R light treatment; thus, stimulating sexual maturity (Lewis et al, 1998). In contrast, Harrison et al (1969) and Lewis et al, (2007) reported that pullets mature significantly earlier under short wavelength (440-540 nm) than those under long wavelength (560-660 nm) light; nevertheless, Pyrzak et al (1986) found no differences in sexual maturity.…”

Section: Discussionmentioning

confidence: 48%

Effect of Monochromatic and Combined Light Colour on Performance, Blood Parameters, Ovarian Morphology and Reproductive Hormones in Laying Hens

Hassan

Sultana

Choe

et al. 2013

Italian Journal of Animal Science

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We evaluated the effect of monochromatic and combined light emitting diode (LED) light colour on performance, ovarian morphology, and reproductive hormone and biochemical blood parameters in laying hens. A total of 600 Hy-line Brown pullets, 12 weeks of age, were divided (25×4×6 = birds × replications × treatments) as follows: red (R), green (G), blue (B), and combinations of R→G and R→G→B treatments. Fluorescent white light (W) was the control. The results showed that higher egg production was found under the monochromatic R and combination R→G treatments, and that heavier eggs were laid by the B and G treatments (P<0.05). Consequently, better feed conversion ratio was attained in the R→G treatment. Serum follicle stimulating hormone and 17 -estradiol levels were significantly higher in the R and R→G treatments. B treated birds came into production 15 days later than those treated with R light. Organ weight (ovary and stroma) and ovarian follicle numbers (1-3 and 4-6 mm) were significantly higher in R treated birds, as well as serum glucose and triglyceride contents. Serum IgG concentrations and the heterophil to lymphocyte ratio were not influenced by light colour. In these laying hens, 14 h R with 2 h G light in the later part of the day increased reproductive hormone levels, ovarian weight, and follicle number and hence increased egg production. Thus, these results suggest that a combination of R→G light may be comparable with monochromatic R light to enhance egg production in laying hens.

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Section: Discussionmentioning

confidence: 48%

Effect of Monochromatic and Combined Light Colour on Performance, Blood Parameters, Ovarian Morphology and Reproductive Hormones in Laying Hens

Hassan

Sultana

Choe

et al. 2013

Italian Journal of Animal Science

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“…The artificial light in which commercial broilers are typically housed has an intensity of ,10 to 12 lx (e.g. Lewis and Morris, 1998). This is considerably dimmer than the outside light intensity measured at noon on an overcast day, which has been estimated at ,1000 lx for countries in Northern Europe (Schlyter, 2009).…”

Section: Introductionmentioning

confidence: 99%

Influence of the provision of natural light and straw bales on activity levels and leg health in commercial broiler chickens

Bailie

Ball

O’Connell

2013

Animal

107

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The aim of this study was to assess the effect of natural light and straw bales on activity levels and leg health in commercial broiler chickens. Houses containing ,23 000 broiler chickens were assigned to one of four treatments in a 2 3 2 factorial design. Treatments involved two levels of access to natural light (NL) (present '1NL', or absent '2NL') and two levels of access to straw bales (SB) (present (30/house) '1SB', or absent '2SB'). All houses were windowed and artificially lit, and windows were shuttered where appropriate. Treatments were applied in one of the two houses on each of the two farms, and were replicated over four production cycles. Behaviour was observed in 2 to 6 weeks of the cycle. This involved observations of general behaviour and activity, gait scores (0 (perfect) to 5 (unable to walk)) and latency to lie (measured in seconds from encouraging a bird to stand). Production performance and environmental parameters were also measured. Average daytime light intensity and UV levels in the 1NL treatment were 85.2 lx and 3.37 mW/cm 2 , respectively, and in the 2NL treatment were 11.4 lx and 0 mW/cm 2 , respectively. Litter moisture levels were lower with NL treatment (P , 0.05), but were not affected by SB (P . 0.05). The percentage of time spent lying was significantly reduced by the provision of NL (P , 0.01), but not by SB (P . 0.05). There were three-way interactions between NL, SB and bird age on the percentage of time spent in locomotion (P , 0.05) and idling (P , 0.05). Both treatment factors had inconsistent effects on these parameters across different weeks. Levels of preening, resting and aggressive behaviour were not affected by treatment (P . 0.05). There was an interaction between treatments in average gait scores, with higher scores in the 2NL2SB treatment than in all other treatments, and higher in the 2NL1SB treatment than in the 1NL treatments (P , 0.001). Average latency to lie was significantly higher with NL (P , 0.001) and SB (P , 0.05). We conclude that environmental modifications have the potential to increase activity levels and improve the leg health of commercial broilers. The light environment appears to be particularly important in this respect.

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“…All these hormones shared in development and enhancing productive and reproductive functions of domestic birds (Mateescu and Thonney, 2005). Light is consists of three different aspects: photoperiod, color and intensity (Lewis and Morris, 1998). There has been much workers focused on the effects of light intensity on different poultry species; laying hens (Lewis et al, 2004), broilers (Ahmad et al, 2011) and turkeys (Yahav et al, 2000) in different aspects such as: production (Lien et al, 2007), behaviour (Alvino et al, 2009), physiology (Lewis et al, 2005), vision (Prescott et al, 2003) and welfare (Deep et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Effect of Artificial and Natural Day Light Intensities on some Behavioral Activities, Plumage Conditions, Productive and Physiological Changes for Japanese Quail

Khalil¹,

Hanafy²,

Hamdy³

2015

Asian J. of Poultry Science

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This study was designed to evaluate the effects of different artificial light intensity; 10, 50, 250, 500 lux and natural day light (NDL, average 375 lux) from 3-18 week of age on behavioral activities, plumage conditions, productive and physiological traits for grower and layer of Japanese quail. A total of 270 Japanese quails chicks (3 week old) were randomly assigned to five treatment groups according to different light intensities. The results showed that the birds subjected at NDL and 250 lux spent significantly more time standing than those recorded in 50 and 500 lux groups. Also, birds kept at 500 lux spent significantly more time walking compared with other groups. The lowest plumage deterioration was detected in birds kept under NDL compared with other experimental groups. The heavier body weight (p#0.05) at 6 weeks and weight gain from 3-6 weeks were detected for birds reared at NDL and 250 lux compared with 500 lux and did not significant with the rest of the experimental groups. While, Hen Day Egg Production (HDEP) and Total Egg Mass (TEM) were linearly increased beginning of 50 lux with increasing light intensity. Fertility percentage was significantly higher in 250 lux group than in 50 lux and was not significant with the other groups. Hatchability percentage was significantly decreased in 10 lux group compared with the other groups. Serum level of T 3 was decreased linearly with increasing light intensity. Birds kept at 500 lux had reduced overall number of Ovarian Yellow Follicle (OYF), relative weight of ovaries and testes and cloacal gland area compared with the other groups. From our results, it could be concluded that neither high light intensity (500 lux) nor low light intensity (10 lux) had a positive effect on most traits. Therefore, to maximize productive, reproductive parameters and increase revenue economic may be by using moderate artificial light intensity if we used closed-side housing system or NDL if we used open side housing system for production of Japanese quail.

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Responses of domestic poultry to various light sources

Cited by 68 publications

References 59 publications

Effect of Monochromatic and Combined Light Colour on Performance, Blood Parameters, Ovarian Morphology and Reproductive Hormones in Laying Hens

Effect of Monochromatic and Combined Light Colour on Performance, Blood Parameters, Ovarian Morphology and Reproductive Hormones in Laying Hens

Influence of the provision of natural light and straw bales on activity levels and leg health in commercial broiler chickens

Effect of Artificial and Natural Day Light Intensities on some Behavioral Activities, Plumage Conditions, Productive and Physiological Changes for Japanese Quail

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