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The development of fault bars in domestic chickens (Gallus gallus domesticus) increases with acute stressors and individual propensity: implications for animal welfare
Contributor(s):: Arrazola, A., Torrey, S.
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The welfare of game birds destined for release into the wild: a balance between early life care and preparation for future natural hazards
Contributor(s):: Madden, J. R., Santilli, F., Whiteside, M. A.
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Consumer attitudes to injurious pecking in free-range egg production
Contributor(s):: Bennett, R. M., Jones, P. J., Nicol, C. J., Tranter, R. B., Weeks, C. A.
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Tree cover and injurious feather-pecking in commercial flocks of free-range laying hens: a follow up
Contributor(s):: Bright, A., Gill, R., Willings, T. H.
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Animal welfare initiatives improve feather cover of cage-free laying hens in the UK
Contributor(s):: Mullan, S., Szmaragd, C., Cooper, M. D., Wrathall, J. H. M., Jamieson, J., Bond, A., Atkinson, C., Main, D. C. J.
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Farmer attitudes to injurious pecking in laying hens and to potential control strategies
Contributor(s):: Palczynski, L. J., Buller, H., Lambton, S. L., Weeks, C. A.
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Validation of an accelerometer to quantify inactivity in laying hens with or without keel-bone fractures
Contributor(s):: Casey-Trott, T. M., Widowski, T. M.
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High and low feather pecking selection lines of laying hens differ in response to a judgment bias test
Contributor(s):: Pichová, Katarína, Košťál, Ľubor, de Haan, Tara I., van der Eijk, Jerine A. J., Rodenburg, T. Bas
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Self- and conspecific-directed pecking behavior of commercial Pekin ducks
Contributor(s):: Dong, Yiru, Karcher, Darrin M., Erasmus, Marisa A.
2021Applied Animal Behaviour Science2351052230168-159110.1016/j.applanim.2021.105223text
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Welfare Assessment of Two Free-range Laying Hen Flocks in Turkey
Contributor(s):: Petek, Metin, Çavuşoğlu, Enver
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Use of dynamic and rewarding environmental enrichment to alleviate feather pecking in non-cage laying hens
Contributor(s):: Daigle, Courtney L., Rodenburg, T. Bas, Bolhuis, J. Elizabeth, Swanson, Janice C., Siegford, Janice M.
Feather pecking (FP) can cause feather loss, resulting in physical injuries, which may lead to cannibalism. FP appears to be a redirection of foraging behavior, which intensifies when hens have difficulty coping with stress and fear. Dynamic environmental enrichment (EE) may allow expression of...
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Predicting feather damage in laying hens during the laying period. Is it the past or is it the present?
Contributor(s):: de Haas, Elske N., Bolhuis, J. Elizabeth, de Jong, Ingrid C., Kemp, Bas, Janczak, Andrew M., Rodenburg, T. Bas
Feather damage due to severe feather pecking (SFP) in laying hens is most severe during the laying period. However, SFP can develop at an early age and is influenced by early rearing conditions. In this study we assessed the risk factors during the rearing and laying period for feather damage at...
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Effects of growth pattern and dietary protein level during rearing on feed intake, eating time, eating rate, behavior, plasma corticosterone concentration, and feather cover in broiler breeder females during the rearing and laying period
Contributor(s):: van Emous, R. A., Kwakkel, René, van Krimpen, Marinus, Hendriks, Wouter
An experiment was conducted to evaluate the effect of growth patterns (GP) and dietary crude protein levels (CP) during rearing (2–22 weeks of age) on feed intake, eating time, eating rate, behavior, plasma corticosterone concentration, and feather cover in broiler breeder females during the...
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The effect of rearing environment on feather pecking in young and adult laying hens
Contributor(s):: Gilani, Anne-Marie, Knowles, Toby G., Nicol, Christine J.
Although the rearing period has an important influence on the development of feather pecking in laying hens, few studies have quantified the risk factors operating on commercial farms during this time and identified their long-term impact. Our aim was to conduct a longitudinal study to...
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Behavioural testing to determine differences between coping styles in Grey parrots (Psittacus erithacus erithacus) with and without feather damaging behaviour
Contributor(s):: van Zeeland, Yvonne R. A., van der Aa, Marleen M. J. A., Vinke, Claudia M., Lumeij, Johannes T., Schoemaker, Nico J.
In various animal species, a correlation has been found between the individual's response to ‘stressing’ stimuli (coping style) in behaviour tests and the susceptibility to develop behavioural disorders. Based on analogies with feather pecking in laying hens, a similar correlation might be...
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Pain issues in poultry
Contributor(s):: Gentle, Michael J.
This review highlights the possible pain experienced by layer and broiler poultry in modern husbandry conditions. Receptors which respond to noxous stimulation (nociceptors) have been identified and physiologically characterised in many different part of the body of the chicken including the...
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Laying hens selected for low mortality: Behaviour in tests of fearfulness, anxiety and cognition
Contributor(s):: Nordquist, Rebecca E., Heerkens, Jasper L. T., Rodenburg, T. Bas, Boks, Sabine, Ellen, Esther D., van der Staay, F. Josef
Feather pecking and cannibalism in chickens can lead to injury or to death of the victims, and is thus a serious welfare and economic issue in modern poultry farming. A sib selection scheme has been initiated to genetically select a low mortality line (LML), which shows decreased mortality due to...
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The influence of access to aerial perches on fearfulness, social behaviour and production parameters in free-range laying hens
Contributor(s):: Donaldson, Caroline Julie, O’Connell, Niamh Elizabeth
The aim of this trial was to determine the influence of aerial perches on welfare and production parameters in free-range laying hens. Five commercial free-range houses, each containing between 7000 and 8000 birds, were used. Each house and range area was split in half to create two treatments....
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Effect of four processed animal proteins in the diet on behavior in laying hens
Contributor(s):: van Krimpen, Marinus, Veldkamp, Teun, Binnendijk, Gisabeth, de Veer, Remco
An experiment was performed to investigate the effect of animal versus vegetable protein sources in the diet on the development of behavior in laying hens. A diet containing protein sources of only vegetable origin was compared with four diets, each containing one of four processed animal...
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The effect of dark brooders on feather pecking on commercial farms
Contributor(s):: Gilani, Anne-Marie, Knowles, Toby G., Nicol, Christine J.
Commercial laying hen chicks experience continuous light for up to 24h/day in the first week of life. Under these conditions, active chicks disturb, and may direct feather pecks towards resting ones. Previous experimental work with small groups showed that both problems were reduced in chicks...
