Responses to odorants by the domestic chick

Physiology & Behavior
T H Burne, L J Rogers

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 (EC50) 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 EC50 values for pecking and head shaking (approximately 1% for isoamyl acetate and allyl sulfide) indicate that they may be controlled by th...Continue Reading

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Citations

May 22, 2010·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Samuel P Caro, Jacques Balthazart
Jan 3, 2001·Physiology & Behavior·T OosawaK Tonosaki
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Feb 16, 2016·Behavioural Brain Research·Marcello SiniscalchiAngelo Quaranta
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Aug 30, 2018·Frontiers in Veterinary Science·Paola A Prada, Kenneth G Furton
Sep 23, 2008·Behavioural Brain Research·Jacques Balthazart, Mélanie Taziaux

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