5BALCOMBE J, FERDOWSIAN H, DURHAM D. Self-harm in laboratory-housed primates: where is the evidence that the Animal Welfare Act amendment has worked? [J]. J Appl Anim Well Sci,2011,14(4) :361-370.
6BAUMANS V, Van LOO PLP,PHAM TM. Standardisa- tion of environmental enrichment for laboratory mice and rats: utilisation, practicality and variation in experimental results[J].Scand J Lab Anita Sci,2010,37(2) :101-114.
7BENEFIEL AC,DONG WK,GREENOUGH WT. Mand- atory "enriched" housing of laboratory animals : the nec 2 for evidence-based evaluation [J].ILAR J, 2005,46 (2) :95-105.
8TURNER PV, VAUGHN E, SUNOHARA-NEILSON J, et al. Oral gavage in rats: animal welfare evaluationEJ~. J Am Assoc Lab Anita Sei,2012,51(1):25-30.
