经过评估，在没有新数据的情况下，专家小组无法就添加剂对用户的安全做出结论。专家小组认为，先前关于功效的结论仍然有效。部分原文报道如下：

 

　　Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the assessment of the application for the renewal of the authorisation of urea as nutritional feed additive. The additive is authorised for use in ruminants with functional rumen (3d1). The applicant provided evidence that the additive currently in the market complies with the existing conditions of authorisation and the production process has not been substantially modified. The FEEDAP Panel considers that there is no evidence to revise the conclusions reached in the previous assessment for the target species, consumer and for the environment when used as a source of non-protein nitrogen under current conditions of use, in ruminants with functional rumen. In the absence of new data, the FEEDAP Panel is not in the position to conclude on the user safety. The Panel retains that previously made conclusion on the efficacy remains valid.