Raising laying hens: housing complexity and genetic strain affect startle reflex amplitude and behavioural response to fear-inducing stimuli
Individual variation in fearfulness can be modified during ontogeny, and high levels of fear
can affect animal welfare. We asked whether early-life environmental complexity and …
can affect animal welfare. We asked whether early-life environmental complexity and …
[HTML][HTML] Early life environment and adult enrichment: Effects on fearfulness in laying hens
L Dumontier, AM Janczak, TV Smulders… - Applied Animal …, 2022 - Elsevier
The environmental complexity, both during early and adult life, contributes to shaping
individuals' fearfulness. The present study aimed at testing whether hens reared in an aviary …
individuals' fearfulness. The present study aimed at testing whether hens reared in an aviary …
[HTML][HTML] Exposure to increased environmental complexity during rearing reduces fearfulness and increases use of three-dimensional space in laying hens (Gallus …
M Brantsæter, J Nordgreen, TB Rodenburg… - Frontiers in Veterinary …, 2016 - frontiersin.org
The complexity of the rearing environment is important for behavioral development and
fearfulness. The aim of this study was to test the hypothesis that laying hens reared in a …
fearfulness. The aim of this study was to test the hypothesis that laying hens reared in a …
Raising laying hens: the effect of early life environmental complexity and genetic strain on behavioural development
AK Rentsch - 2023 - atrium.lib.uoguelph.ca
Laying hens housed in complex housing systems (eg, aviaries) must be raised in equally
complex rearing systems to thrive. Using three-dimensional space requires physical and …
complex rearing systems to thrive. Using three-dimensional space requires physical and …
[HTML][HTML] Differences in fear response strategy and stress susceptibility amongst four different commercial layer strains reared cage free
AA Brown, EB Sobotik, GM House, JR Nelson… - Frontiers in …, 2022 - frontiersin.org
Different commercial lines of laying hens may show varying levels of fearfulness in response
to stressful events or situations. It is important to understand the differences in fear response …
to stressful events or situations. It is important to understand the differences in fear response …
[HTML][HTML] Effects of maternal stress on measures of anxiety and fearfulness in different strains of laying hens
Maternal stress can affect the offspring of birds, possibly due to hormone deposition in the
egg. Additionally, phenotypic diversity resulting from domestication and selection for …
egg. Additionally, phenotypic diversity resulting from domestication and selection for …
Brown and white egg-layer strain differences in fearfulness and stress measures
JR Nelson, P Settar, E Berger, A Wolc… - Applied Animal …, 2020 - Elsevier
Different genetic lines of laying hens may show varying levels of fearfulness in response to
stressful events or situations. It is important to select appropriate genetic strains when …
stressful events or situations. It is important to select appropriate genetic strains when …
Fear responses of individually-caged laying hens as a function of cage level and aisle
RB Jones - Applied Animal Behaviour Science, 1985 - Elsevier
Chickens kept under intensive conditions are often housed in multi-deck battery cage
systems. The effects on egg production of housing birds at different cage levels have been …
systems. The effects on egg production of housing birds at different cage levels have been …
The relation between fearfulness in young and stress-response in adult laying hens, on individual and group level
EN de Haas, MS Kops, JE Bolhuis, TGG Groothuis… - Physiology & …, 2012 - Elsevier
Fearfulness of an individual can affect its sensitivity to stress, while at the same time the
social situation in which an animal lives can affect its fear level. It is however unknown what …
social situation in which an animal lives can affect its fear level. It is however unknown what …
[HTML][HTML] Neurological functioning and fear responses in low and normal birth weight piglets
S Roelofs, E Meijer, V Baas, M Dobrovolski… - Applied Animal …, 2019 - Elsevier
Low birth weight (LBW) piglets are an increasingly common occurrence on commercial pig
farms, due to selection for sow fecundity. In humans, LBW is a known risk factor for impaired …
farms, due to selection for sow fecundity. In humans, LBW is a known risk factor for impaired …
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