Gwazdauskas F C, Vinson W E
J Dairy Sci. 1979 Nov;62(11):1811-3. doi: 10.3168/jds.S0022-0302(79)83503-1.
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.
适应-2.7℃或19.1℃环境的荷斯坦小母牛被用于测定注射促肾上腺皮质激素(200国际单位)后血浆中糖皮质激素的浓度。环境处理并未改变注射促肾上腺皮质激素后的糖皮质激素水平。在-2.7℃时,注射促肾上腺皮质激素使平均糖皮质激素水平升高至41.6纳克/毫升血浆,在19.1℃时为42.8纳克/毫升。环境低温并未改变荷斯坦小母牛肾上腺对促肾上腺皮质激素的反应。