Adrenal response to adrenocorticotropin in Holstein heifers exposed to a cool environment.
Tne Holstein heifers acclimated to either -2.7 or 19.1 C were used to determine glucocorticoid concentrations in plasma following injection of adrenocorticotropin (200 IU). Environmental treatments did not change glucocorticoids following adrenococorticotropin. Adrenocorticotropin injection elevated mean glucocorticoids to 41.6 ng/ml plasma at -2.7 C and 42.8 ng/ml at 19.1 C. Adrenal response to adrenocorticotropin in Holstein heifers was not altered by low environmental temperature.
D000324:Adrenocorticotropic Hormone / Q000494:pharmacology*; D000704:Analysis of Variance; D000818:Animals; D002417:Cattle / Q000502:physiology*; D003080:Cold Temperature; D005260:Female; D005938:Glucocorticoids / Q000097:blood*; D013997:Time Factors
D005938:Glucocorticoids; D000324:Adrenocorticotropic Hormone