Kamphues J
Institut für Tierernährung der Tierärztlichen Hochschule Hannover.
Dtsch Tierarztl Wochenschr. 1991 Jan;98(1):35-6.
20 heifers got ammoniated grass silage ad libitum (self feeding system in front of the silo), the ration was supplemented by small amounts of maize silage and concentrate only. During a few hours past feed intake the heifers developed hyperesthetic, hyperactive symptoms and massive salivation. Without any treatment the clinical symptoms disappeared. The analysed sample of grass silage contained about 9 g ammonia per kg fresh weight. Changing the feeding system (offering the roughage past 1 day of aeration) the same grass silage did not lead to any disturbances or health problems in the heifers. It was assumed, that the observed symptoms were typical signs of ammonia-intoxication.
20头小母牛自由采食氨化青贮草（青贮窖前的自助饲喂系统），日粮仅补充少量玉米青贮和精饲料。采食后数小时，小母牛出现感觉过敏、多动症状并大量流涎。未经任何治疗，临床症状自行消失。分析的青贮草样本每千克鲜重含约9克氨。改变饲喂系统（在青贮粗饲料曝气1天后再提供），相同的青贮草未导致小母牛出现任何不适或健康问题。据推测，观察到的症状是氨中毒的典型体征。
