Nightengale G T, Stott G H
J Dairy Sci. 1981 Feb;64(2):236-40. doi: 10.3168/jds.S0022-0302(81)82559-3.
This is a study of hyperadrenalemia from inanition in neonatal calves and the influence of elevated postpartum concentrations of cortisol in serum in intestinal absorption of colostral immunoglobulins. Feeding of newborn Holstein-Friesian calves was delayed up to 24 h after parturition. Concentrations of cortisol in serum were measured at 0, 12, 24, and 40 h following birth. Delaying colostrum intake 8 h or more elevated cortisol concentrations in serum at 24 h postpartum. Adrenal response as indicated by concentrations of cortisol in serum followed a positive linear trend with delay in feeding. Concentrations of cortisol also were increased acutely by ingestion of colostrum following inanition. As time elapsed after the feeding, concentration of cortisol in serum decreased. Partial correlations were negative between concentration of cortisol and maximum Immunoglobulin G but not Immunoglobulin M or Immunoglobulin A.
这是一项关于新生犊牛饥饿引起的肾上腺功能亢进以及产后血清皮质醇浓度升高对初乳免疫球蛋白肠道吸收影响的研究。新生荷斯坦 - 弗里生犊牛的喂食在分娩后延迟长达24小时。在出生后的0、12、24和40小时测量血清皮质醇浓度。产后24小时初乳摄入延迟8小时或更长时间会使血清皮质醇浓度升高。血清皮质醇浓度所表明的肾上腺反应随喂食延迟呈正线性趋势。饥饿后摄入初乳也会使皮质醇浓度急性升高。随着喂食后时间的推移，血清皮质醇浓度下降。皮质醇浓度与最大免疫球蛋白G之间的偏相关性为负，但与免疫球蛋白M或免疫球蛋白A之间无此关系。
