Selection for low mortality in laying hens affects catecholamine levels in the arcopallium, a brain area involved in fear and motor regulation
| Autor: | Onur Güntürkün, Gerdien A.H. Korte-Bouws, T. Bas Rodenburg, Elske N. de Haas, S. Mechiel Korte, J. Elizabeth Bolhuis, Marjolein S. Kops, Esther D. Ellen, Berend Olivier |
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| Rok vydání: | 2013 |
| Předmět: |
Restraint
Physical avian telencephalon medicine.medical_specialty Arcopallium multilevel selection Breeding Animal Breeding and Genomics Open field Behavioral Ecology Behavioral Neuroscience chemistry.chemical_compound Catecholamines Dopamine Internal medicine medicine Animals open-field response Fokkerij en Genomica stereotyped behavior Mortality Adaptatiefysiologie pigeon columba-livia feather pecking behavior Chromatography High Pressure Liquid prefrontal cortex Feather pecking Homovanillic acid Dopaminergic Brain dopaminergic innervation gallus-gallus-domesticus tyrosine-hydroxylase Gedragsecologie Monoamine neurotransmitter Endocrinology Gene Expression Regulation chemistry WIAS Catecholamine Adaptation Physiology Female Psychology Chickens ID - Dier en Omgeving medicine.drug |
| Zdroj: | Behavioural Brain Research 257 (2013) Behavioural Brain Research, 257, 54-61 |
| ISSN: | 0166-4328 |
| DOI: | 10.1016/j.bbr.2013.09.035 |
| Popis: | Feather pecking (FP) in laying hens may cause mortality due to cannibalism. Novel breeding methods using survival days of group-housed siblings allow for the genetic selection of laying hens with low mortality (LML: low mortality line) due to cannibalism. Previous studies have demonstrated less fear-related behavior and also less FP in LML hens compared to CL. Selection also caused changes in locomotor behavior in an open field. It is unknown, however, whether selection for low mortality affects central neurotransmitter levels. In this study, brain monoamine levels were measured in the dorsal thalamus, medial striatum, hippocampus and arcopallium of adult laying hens of both LML and CL using HPLC. Brain samples were collected after 5-min of manual restraint. The most prominent line differences were found in the arcopallium. Compared to CL, LML had lower levels of noradrenaline (NA) and 3,4-dihydroxyphenylacetic acid (DOPAC) and tended to have lower levels of dopamine (DA), homovanillic acid (HVA), and 5-hydroxyindoleacetic acid (5-HIAA). Levels of serotonin (5-HT), 5-HT- and DA-turnover in this brain area were not affected by line. LML showed less fear-related behavior during the restraint than CL. These findings show that selection for low mortality in hens leads to changes of predominantly the dopaminergic system in the chicken's arcopallium, a forebrain somatomotor area also related to fear. This suggests a relationship between catecholamine functioning in this brain area and FP and cannibalistic behavior in chickens and underpins previously found relationships between FP, fear and high activity. |
| Databáze: | OpenAIRE |
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