Gale G R, Smith A B
Lab Anim Sci. 1981 Feb;31(1):56-9.
Five types of commercial laboratory animal bedding were assessed for endogenous ureolytic activity using a sensitive method which measures the rate of evolution of 14C-carbon dioxide from 14C-urea. On a weight basis, the highest levels of urease activity were found in heat-treated hardwood chips and a regular grade of crushed corncobs. A deodorant-treated type of crushed corncobs had a moderately high level of activity, while pelleted corncobs and pelleted alfalfa were almost devoid of urease activity. A heat-stable activator of bacterial urease was found in hardwood chips and crushed corncobs.
使用一种灵敏的方法对五种商用实验动物垫料进行了内源性尿素分解活性评估，该方法通过测量从14C-尿素中释放出的14C-二氧化碳的速率来进行。以重量为基础，在经过热处理的硬木片和常规等级的碎玉米芯中发现了最高水平的脲酶活性。一种经过除臭处理的碎玉米芯类型具有中等水平的活性，而颗粒状玉米芯和颗粒状苜蓿几乎没有脲酶活性。在硬木片和碎玉米芯中发现了一种细菌脲酶的热稳定激活剂。
