Comparison of synthetic membranes in the development of an in vitro feeding system for Dermanyssus gallinae [PDF]
, 2010 Although artificial feeding models for the poultry red mite (Dermanyssus gallinae) most frequently use biological membranes consisting of day-old chick skin, there are ethical considerations associated with the use of skin.
D.W.J. Harrington +8 more
core +1 more source
Life-history and hormonal control of aggression in black redstarts: blocking testosterone does not decrease territorial aggression, but changes the emphasis of vocal behaviours during simulated territorial intrusions [PDF]
, 2013 Introduction: Many studies in behavioural endocrinology attempt to link territorial aggression with testosterone, but the exact relationship between testosterone and territorial behaviour is still unclear and may depend on the ecology of a species.
Apfelbeck, Beate +4 more
core +2 more sources
Lifetime variation in feather corticosterone levels in a long-lived raptor
Oecologia, 2016 In long-lived animals, the challenges that threaten individual homeostasis, and the way they are dealt with, are expected to vary in an age-related manner, encompassing the progressive selection of superior phenotypes and the acquisition and improvement of key skills (e.g. foraging, breeding and fighting abilities).
López-Jiménez, Lidia +6 more
openaire +3 more sources
Feather Corticosterone Levels and Carotenoid-Based Coloration in Common Buzzard (Buteo buteo) Nestlings [PDF]
Journal of Raptor Research, 2013 [EN]: Most of our understanding of the function of colored traits displayed by birds and the mechanisms that produce or maintain them comes from studies on adults. However, colored traits are often displayed by nestlings from a young age, and these traits may influence parent-offspring interactions or sibling competition.
Martínez-Padilla, Jesús +4 more
openaire +2 more sources
Using programmable infusion pump in avian species – a validation methodology in geese
Wildlife Biology, EarlyView.Wildlife face anthropogenic and natural stressors that affect their physiology and behaviour. The activity of the hypothalamic–pituitary–adrenal axis and glucocorticoid (GC) production is intrinsically linked with energy regulation and environmental stressors.
Myriam Trottier‐Paquet +5 more
wiley +1 more source
Poultry Science: The present study was conducted to assess the animal welfare status of broiler chickens raised in conventional and welfare-certified farms. One conventional farm (30,000 birds/house, 1,488 m2/house, 2 houses) and one animal welfare-certified farm (32 ...
Byung-Yeon Kwon +7 more
doaj +1 more source
Diet, phenology and body size shape nutrient release by songbirds
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Animals can dramatically alter ecosystem structure and function through the cycling and transport of nutrients in their waste. While birds are particularly capable of influencing nutrient cycles due to their high mobility, abundance, metabolism and functional diversity,
Linsey Chen +2 more
wiley +1 more source
Effects of grain-based pecking blocks on productivity and welfare indicators in commercial broiler chickens [PDF]
Animal BioscienceObjective This experiment was conducted to investigate the effect of grain-based pecking blocks on productivity and welfare status at two commercial broiler welfare-certified farms.
Byung-Yeon Kwon +7 more
doaj +1 more source
Animals, 2021 Worldwide, billions of laying hen chicks are incubated and processed under highly industrialised circumstances every year, which, as we have previously shown, has long-lasting effects.
Louise Hedlund +2 more
doaj +1 more source
Baseline and stress-induced levels of corticosterone in male and female Afrotropical and European temperate stonechats during breeding [PDF]
, 2017 Background: Latitudinal variation in avian life histories falls along a slow-fast pace of life continuum: tropical species produce small clutches, but have a high survival probability, while in temperate species the opposite pattern is found.
Apfelbeck, Beate Anna +5 more
core +4 more sources