Relationships between feeding and locomotion behaviors after central administration of CRF in chicks.
The effect of intracerebroventricular injection of corticotropin-releasing factor (CRF) on various behaviors in chicks was determined at 15-min intervals over a 30-min period. Food intake of chicks was significantly decreased, and pecking rhythm was significantly delayed by CRF during the first 15-min post-injection. The similar tendencies were observed in the second 15-min post-injection, but not significantly different. Stepping, as an indicator of locomotion, was not different at 15-min post-injection, but was increased by CRF, thereafter. These results suggest that CRF acts within the central nervous system to decrease food intake and increase locomotion in the chick.
Ohgushi
A
A
Division of Animal and Marine Bioresources Science, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka 812-8581, Japan.
Bungo
T
T
Shimojo
M
M
Masuda
Y
Y
Denbow
D M
DM
Furuse
M
M
D000818:Animals; D000831:Animals, Newborn; D002645:Chickens / Q000502:physiology*; D003346:Corticotropin-Releasing Hormone / Q000008:administration & dosage / Q000494:pharmacology*; D004435:Eating / Q000187:drug effects; D005247:Feeding Behavior / Q000187:drug effects*; D007276:Injections, Intraventricular; D008297:Male; D009043:Motor Activity / Q000187:drug effects*
D003346:Corticotropin-Releasing Hormone