Responses of broiler chickens to high‐frequency and low‐frequency fluorescent light

Boshouwers, F. M. G.; Nicaise, Elly

doi:10.1080/00071669208417511

Cited by 24 publications

(15 citation statements)

References 8 publications

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“…As there was a trend for activity to increase by the second day in both treatments, higher activity may show that the birds are more settled. These results mirror those of Boshouwers and Nicaise (1992), who found that broilers were less active under LF than HF. Also, basal corticosterone was higher in birds kept under LF, an increase in hypothalamicpituitary-adrenal activity that occurred even though the birds were less active.…”

Section: Discussionsupporting

confidence: 91%

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Effect of repetitive visual stimuli on behaviour and plasma corticosterone of European starlings

El¹,

Greenwood²,

Goldsmith³

et al. 2005

Animal Biol

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Flickering light can cause adverse effects in some humans, as can rhythmic spatial patterns of particular frequencies. We investigated whether birds react to the temporal frequency of standard 100 Hz fluorescent lamps and the spatial frequency of the visual surround in the manner predicted by the human literature, by examining their effects on the preferences, behaviour and plasma corticosterone of European starlings (Sturnus vulgaris). We predicted that high frequency lighting (>30 kHz) and a relatively low spatial frequency on the walls of their cages (0.1 cycle cm −1 ) would be less aversive than low frequency lighting (100 Hz) and a relatively high spatial frequency (2.5 cycle cm −1 ). Birds had strong preferences for both temporal and spatial frequencies. These preferences did not always fit with predictions, although there was evidence that 100 Hz was more stressful than 30 kHz lighting, as birds were less active and basal corticosterone levels were higher under 100 Hz lighting. Our chosen spatial frequencies had no overall significant effect on corticosterone levels. Although there are clearly effects of, and interactions between, the frequency of the light and the visual surround on the behaviour and physiology of birds, the pattern of results is not straightforward.

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Section: Discussionsupporting

confidence: 91%

“…However, from a welfare perspective, frequencies above those that are perceptible can cause adverse effects in humans (Wilkins, 1995); the same may be true of poultry, as LF has been found to inhibit activity, but without reducing energy expenditure, in broilers (Boshouwers and Nicaise, 1992).…”

Section: Introductionmentioning

confidence: 98%

Effect of repetitive visual stimuli on behaviour and plasma corticosterone of European starlings

El¹,

Greenwood²,

Goldsmith³

et al. 2005

Animal Biol

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“…This 'stroboscopic' effect is even more pronounced with dimmed fluorescent light. Increased activity has been observed in birds given high frequency fluorescent light compared with low frequency fluorescent light (Boshouwers and Nicaise, 1992). Moreover, it is suspected that this stroboscopic effect is inconvenient for birds and, although not necessarily adversely affecting performance, may deleteriously affect their welfare.…”

Section: Light Sourcementioning

confidence: 99%

Effect of intermittent lighting, light intensity and source on the performance and welfare of broilers

Buyse

Simons

Boshouwers

et al. 1996

World's Poultry Science Journal

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Broilers are currently reared under nearly continuous lighting (CL) schedules. However, the suitability of such lighting regimens may be questioned in terms of performance and welfare. This paper reviews the literature concerning the effects of intermittent lighting (IL) schedules on these issues. Final body weights at market age of broilers reared under IL schedules are equal to, or even higher than, those of broilers reared under CL schedules. However, endogenous (genotype and sex) and exogenous (dietary composition, feeder space, etc.) factors may interact with the lighting schedule. In contrast, feed conversion is consistently improved with IL, partly as a consequence of a more concave growth curve (initial growth depression followed by compensatory growth). Inconsistencies in the literature concerning the effect of IL on (abdominal) fat content and dressing yield are caused by interactions with other factors. However, it is clearly demonstrated that IL reduces leg abnormalities, in particular the incidence of twisted legs. Additional welfare benefits of IL are found in reduced physiological stress and improved eye condition. An increase in the amount of catching damage has been observed with IL, but this may be avoided by modifying light management before commencement of the catching operation. The importance of light is not restricted to the lighting schedule; aspects of the light quality are also important. Although the data related to light intensity are conflicting, it is generally recommended that an intensity of 51ux should be provided. Whilst fluorescent light does not affect broiler performance adversely, its lower use of electricity compared with incandescent lighting does reduce input costs. More research is needed to evaluate the impact of these qualitative aspects of lighting on poultry welfare.

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“…The 20 colour and source of artificial light can also affect activity; low-frequency fluorescent lighting lowers activity compared with high-frequency (Boshouwers and Nicaise, 1992) and activity is higher in red than in blue light both at the same intensity, and at higher intensities (Prayitno et al, 1997). Gait abnormalities were also reduced with red light.…”

mentioning

confidence: 99%

The relationship between physical activity and leg health in the broiler chicken

Sherlock

Demmers

Goodship

et al. 2010

British Poultry Science

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Responses of broiler chickens to high‐frequency and low‐frequency fluorescent light

Cited by 24 publications

References 8 publications

Effect of repetitive visual stimuli on behaviour and plasma corticosterone of European starlings

Effect of repetitive visual stimuli on behaviour and plasma corticosterone of European starlings

Effect of intermittent lighting, light intensity and source on the performance and welfare of broilers

The relationship between physical activity and leg health in the broiler chicken

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