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.
Division of Animal and Marine Bioresources Science, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka 812-8581, Japan.
A
A
Ohgushi
T
T
Bungo
M
M
Shimojo
Y
Y
Masuda
D M
DM
Denbow
M
M
Furuse
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