The first farmed cervid to display signs of cwd was an elk that fell ill in 1996 on a ranch in saskatchewan 牧场中的鹿首次出现慢性消耗病的徵兆，是1996年在加拿大萨克其万省一处牧场的某只麋鹿。
2.
The two facilities had exchanged deer for breeding purposes , thus indicating that the disease was infectious ? even to a different species : soon the elk at the facilities contracted the disease . ( deer and elk both belong to the cervid family 这两个研究单位因繁殖之故交换鹿只，由此可见此病具传染性，甚至还可传染给不同物种，因为没多久后，研究室的麋鹿也遭受感染（鹿与麋鹿同属于鹿科动物） 。
3.
In order to develop an accurate and efficient method for the identification of tiger dna , mtdna ctyb sequences of 5 tiger subspecies and 6 other feline species and 6 cervid species were downloaded from genbank , and compared by wdnasis ( v2 . 5 ) software 为了建立对虎dna进行特异性检测的有效、精确的方法，本研究中，从genbank下载虎及其他6种猫科动物和6种鹿科动物的mtdna细胞色素b基因序列，并用wdnasis ( v2 . 5 )软件进行了种间序列比较。
