Responses to odorants by the domestic chick

Burne, THJ and Rogers, LJ (1996) Responses to odorants by the domestic chick. Physiology & Behavior, 60 6: 1441-1447. doi:10.1016/S0031-9384(96)00300-9


Author Burne, THJ
Rogers, LJ
Title Responses to odorants by the domestic chick
Journal name Physiology & Behavior   Check publisher's open access policy
ISSN 0031-9384
Publication date 1996-12-01
Year available 1996
Sub-type Article (original research)
DOI 10.1016/S0031-9384(96)00300-9
Open Access Status Not yet assessed
Volume 60
Issue 6
Start page 1441
End page 1447
Total pages 7
Place of publication OXFORD
Publisher PERGAMON-ELSEVIER SCIENCE LTD
Language eng
Abstract We have developed a method to measure responses to graded concentrations of volatile chemicals by domestic chicks (Gallus gallus domesticus). Concentration-response curves were obtained, from which 50% effective concentration (EC(50)) values were determined. One-day-old chicks were presented with a 4-mm diameter colored bead, at which they pecked readily, affixed to a tube containing log dilutions of odorant. The chick was exposed to the odorant when it pecked at the bead. Various methods of presentation were tried. The method preferred minimized the number of chicks required by allowing repeated testing. Habituation to visual cues was prevented by changing the color of the bead on each presentation. The number of pecks directed at the bead and the amount of head shaking that occurred while the chick was exposed to the stimulus during the 10-s trial were scored from video recordings. Chicks demonstrated increased amounts of head shaking with increasing concentrations of isoamyl acetate or allyl sulfide; low concentrations stimulated pecking and higher concentrations suppressed it. Coincident EC(50) values for pecking and head shaking (approximately 1% for isoamyl acetate and allyl sulfide) indicate that they may be controlled by the same mechanism, albeit inversely. There was no relationship between the amount of pecking and the concentration of eugenol, but the EC(50) value for head shaking was at the 30% concentration. The results demonstrate that one-day-old chicks show graded responses to graded concentrations of odors and that they demonstrate differential sensitivity to different odorants. Possible involvement of the trigeminal system in these responses is considered. Copyright (C) 1996 Elsevier Science Inc.
Keyword olfaction
behavioral test
chicks
isoamyl acetate
allyl sulfide
eugenol
threshold
Ec(50)
concentration-response curves
System
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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