Pigment-specific relationships between feather corticosterone concentrations and sexual coloration [PDF]
Behavioral Ecology, 2014 The adrenocortical stress response may divert energy away from sexual ornamentation, such that ornaments signal exposure or resistance to physiological stress.
Grunst, AS +4 more
core +6 more sources
Animal welfare indicators and stress response of broiler chickens raised at low and high stocking density [PDF]
Journal of Animal Science and TechnologyStocking density is a crucial parameter that impacts animal welfare, performance, and economic returns for producers. In our current investigation, we explored the influence of stocking density on the growth performance, litter quality, footpad ...
Chan Ho Kim +4 more
doaj +2 more sources
Feather corticosterone content in predatory birds in relation to body condition and hepatic metal concentration [PDF]
General and Comparative Endocrinology, 2015 This study investigated the feasibility of measuring corticosterone in feathers from cryo-archived raptor specimens, in order to provide a retrospective assessment of the activity of the stress axis in relation to contaminant burden. Feather samples were
Henrys, Peter A. +4 more
core +5 more sources
Parasites, mate attractiveness and female feather corticosterone levels in a socially monogamous bird [PDF]
Behavioral Ecology and Sociobiology, 2015 Stress is ubiquitous in the life of animals and a key determinant of their well-being and fitness. By quantifying levels of feather corticosterone in growing feathers (CORTf), we measured integrated stress responses in a monogamous game bird, the red ...
Giraudeau, Mathieu +4 more
core +5 more sources
Journal of Applied Poultry ResearchSUMMARY: The study aimed to develop and validate a robust, non-invasive method for assessing corticosterone (CORT) concentrations in poultry feathers as an indication of lifelong stress.
Nikolas R. Faust, Rosemary L. Walzem
doaj +2 more sources
Effects of Perch on Productivity, Welfare, and Physiological Indicators of Broiler Chickens Reared in Animal Welfare-Certificated Farms [PDF]
Veterinary SciencesThis study explored the impact of perches on the productivity and welfare of broilers raised on two animal welfare-certified farms (designated as Farm A and B) in South Korea. Broiler houses in each farm were provided with or without wooden square-shaped
Byung-Yeon Kwon +10 more
doaj +2 more sources
Feather corticosterone reveals that urban great tits experience lower corticosterone exposure than forest individuals during dominance-rank establishment. [PDF]
Conserv Physiol, 2023 Abstract Although the consequences of urbanization for the physiological health of animals are the focus of much active research, an overlooked aspect is how physiology could be indirectly modulated by the urban environment via changes in intraspecific behavioural interactions, particularly among gregarious species. Both urbanization and
Brodin A, Watson H.
europepmc +3 more sources
Welfare characteristics of laying hens in aviary and cage systems [PDF]
Poultry ScienceConcerns regarding the welfare of laying hens in cage systems (CS) have prompted the development of alternative housing systems, such as aviary systems (AS). However, debate remains about welfare and productivity under both systems.
Hyelim Jeon +6 more
doaj +2 more sources
Birds living near airports do not show consistently higher levels of feather corticosterone. [PDF]
Conserv Physiol, 2023 Abstract Noise represents a threat to human and wildlife health, triggering physiological and behavioral challenges to individuals living close to sources of extreme noise. Here, we considered airport environments as sources of potentially stressful stimuli for birds and tested if those living near airports are under higher physiological
Alquezar RD +3 more
europepmc +3 more sources
Experimental corticosterone manipulation increases mature feather corticosterone content: implications for inferring avian stress history from feather analyses [PDF]
Canadian Journal of Zoology, 2021 Feathers incorporate circulating steroids during development. It is therefore assumed that the corticosterone (CORT) content of feathers (CORT f ) represents an integrated measure of plasma CORT over the moult period. We tested this assumption by quantifying CORT f
Yaara Aharon-Rotman +3 more
openaire +1 more source