Sibaja R A, Schmidt G H
J Dairy Sci. 1975 Apr;58(4):569-70. doi: 10.3168/jds.S0022-0302(75)84611-X.
Jugular vein oxytocin concentrations were determined at 15-s intervals on 10 Holstein cows during milking. Oxytocin ranged from .5 muU/ml plasma prior to udder washing to 652.7 muU/ml plasma at 1 min after application of teat cups. The results indicate a gradually increasing release of oxyctocin after stimulation and a maximal oxytocin release 1.5 min after start of udder washing and 1 min after teat cup application.
在挤奶过程中，每隔15秒测定10头荷斯坦奶牛颈静脉中的催产素浓度。催产素浓度从洗乳房前的0.5微单位/毫升血浆，到戴上奶杯1分钟后的652.7微单位/毫升血浆。结果表明，刺激后催产素的释放逐渐增加，在开始洗乳房1.5分钟后和戴上奶杯1分钟后催产素释放达到最大值。
