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Article (Scientific journals)
Effects of androgens and oestrogens on the behaviour of chicks in an imprinting situation.
Balthazart, Jacques; de Rycker, C.
1979In Zeitschrift für Tierpsychologie, 49 (1), p. 55-64
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Keywords :
Age Factors; Androgens/pharmacology; Animals; Behavior, Animal/drug effects; Chickens; Dihydrotestosterone/pharmacology; Dose-Response Relationship, Drug; Estradiol/pharmacology; Estrogens/pharmacology; Female; Imprinting (Psychology)/drug effects; Male; Sex Factors; Testosterone/pharmacology; Vocalization, Animal/drug effects
Abstract :
[en] The behavioural effects of testosterone propionate (TP), 5alpha-dihydrotestosterone (DHT) and oestradiol benzoate (OB) were investigated in day-old chicks during imprinting sessions to a duck model. TP increased the duration of peeping while inhibiting the following reaction and the twitters. DHT had more or less the same effects while OB induces the reverse behavioural changes. The behavioural effects of hormone injections agree with behavioural sex differences observed in non-injected animals: males peep more than females which on the other hand produce more twitters. This could be related to sex differences in the hormonal status of the birds at hatching, as it is known that during incubation male chick embryos have higher plasma testosterone levels than females of corresponding ages.
Disciplines :
Zoology
Neurosciences & behavior
Author, co-author :
Balthazart, Jacques  
de Rycker, C.
Language :
English
Title :
Effects of androgens and oestrogens on the behaviour of chicks in an imprinting situation.
Publication date :
1979
Journal title :
Zeitschrift für Tierpsychologie
ISSN :
0044-3573
Publisher :
Verlag Paul Parey, Berlin, Germany
Volume :
49
Issue :
1
Pages :
55-64
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 July 2011

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