Effects of corticotropin and heat on corticosteroid-binding capacity and serum corticosteroid in White Rock chickens.
The effects of the administration of corticotropin (ACTH) or high environmental temperature on serum maximum corticosteroid-binding capacity (MCBC) and serum corticosteroid concentrations were studied in 6- to 8-wk-old White Rock chickens. Highly significant increases in serum corticosteroids produced by either intramuscular or intravenous injections of ACTH were followed by significant reductions in MCBC within 24 hr. A single high-temperature episode (46 C) caused a significant increase in serum corticosteroids when blood was sampled immediately following exposure to heat; however, serum corticosteroids were not significantly increased following two heat episodes spaced 11 hr apart. Exposure to high temperature did not alter MCBC levels.
Gould
N R
NR
Siegel
H S
HS
D000305:Adrenal Cortex Hormones / Q000097:blood*; D000324:Adrenocorticotropic Hormone / Q000008:administration & dosage / Q000494:pharmacology*; D000818:Animals; D002645:Chickens / Q000502:physiology*; D005260:Female; D006358:Hot Temperature; D007273:Injections, Intramuscular / Q000662:veterinary; D007275:Injections, Intravenous / Q000662:veterinary; D008297:Male; D013997:Time Factors; D014156:Transcortin / Q000378:metabolism
D000305:Adrenal Cortex Hormones; D000324:Adrenocorticotropic Hormone; D014156:Transcortin