Results 41 to 50 of about 3,636 (171)
An association between feather damaging behavior and corticosterone metabolite excretion in captive African grey parrots (Psittacus erithacus) [PDF]
PeerJ, 2016 Background African grey parrots (Psittacus erithacus) are kept as pets and are frequently hand-reared. It has been observed that hand-reared African grey parrots may develop behavioral disorders such as feather damaging behavior (FDB).
Pierluca Costa +6 more
doaj +2 more sources
Corticosterone: effects on feather quality and deposition into feathers
Methods in Ecology and Evolution, 2015 Summary The concentration of the glucocorticoid hormone corticosterone (CORT) is increasingly used in ecology and conservation biology as an integrated measure of the historical record of an individual's hypothalamo–pituitary–adrenal (HPA) activity during feather growth.
Susanne Jenni‐Eiermann +4 more
openaire +1 more source
Exogenous and endogenous corticosterone in feathers
Journal of Avian Biology, 2017 In birds, the steroid hormone corticosterone (CORT) increases in response to real or perceived threats to homeostasis. A long‐term record of CORT exposure is recorded in feathers when the hormone is incorporated into the keratinized tissue, and then preserved when the mature feather is cut off from the blood supply. The opportunity
Clare Parker Fischer +2 more
openaire +1 more source
Poultry Science, 2020 This study investigated the effects of dietary chitosan oligosaccharides (COS) supplementation on growth performance; corticosterone, growth hormone, and insulin-like growth factor-1 concentration; relative organ weight; liver function; meat quality ...
Qingqing Chang, Yiqi Lu, Ruixia Lan
doaj +1 more source
Measuring corticosterone in feathers: Strengths, limitations, and suggestions for the future [PDF]
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2016 The recently introduced technique of measuring corticosterone in feathers currently provides the longest-term measure of corticosterone in birds. This review examines the strengths, weaknesses, and unresolved technical issues of the feather corticosterone technique.
L Michael, Romero, Graham D, Fairhurst
openaire +2 more sources
Ecology and Evolution, 2019 Measuring corticosterone in feathers has become an informative tool in avian ecology, enabling researchers to investigate carry‐over effects and responses to environmental variability.
Alexis Will +3 more
doaj +1 more source
PLoS ONE, 2021 Natal dispersal affects many processes such as population dynamics. So far, most studies have examined the intrinsic and extrinsic factors that determine the distance between the place of birth and of first breeding. In contrast, few researchers followed
Bettina Almasi +3 more
doaj +1 more source
Animals, 2021 Phenological differences in energy demand (i.e., reproductive status) might influence the measurement of corticosterone. The objective of this study was to compare corticosterone concentrations in feathers (FCORT) and plasma (PCORT) for turkey hens ...
Emily M. Leishman +7 more
doaj +1 more source
Frontiers in Veterinary Science, 2020 The feed restriction applied during rearing of broiler breeders inflicts chronic hunger, and frustration due to unfulfilled behavioural needs for feeding.
Fernanda M. Tahamtani +2 more
doaj +1 more source
A rare study from the wintering grounds provides insight into the costs of malaria infection for migratory birds [PDF]
, 2012 Malaria parasites can have strong effects on the population dynamics and evolution of migratory bird species. In many species, parasite transmission occurs on the wintering grounds, but studies to determine the consequences of infection have taken place ...
Sorensen, Marjorie +5 more
core +5 more sources