Lyons E T, Tolliver S C, Drudge J H, Swerczek T W, Crowe M W
Am J Vet Res. 1983 May;44(5):839-44.
A total of 363 Thoroughbreds (62 males, 292 females, and 9 geldings), 1 to 26 years of age, were examined at necropsy for internal parasites for about a 12-month period from February 1981 through February 1982. Emphasis was on examining the stomach for nematodes and the small intestine and cecum for tapeworms. Parasites recovered from the stomach and infection rates were: Habronema spp--immature (24%), H muscae--adult (38%), Draschia megastoma--immature (13%), D megastoma--adult (62%), and Trichostrongylus axei--adult (4%); lesions caused by D megastoma were found upon gross observation in 58% of the stomachs. The tapeworm, Anoplocephala perfoliata, was recovered from 54% of the horses; A magna was not found. There was no obvious difference in infection rates of the stomach worms and tapeworms according to age or sex of the horses. Seasonal differences were apparent only for immature Habronema spp and immature D megastoma for which infection rates began increasing in June, peaking in October, and declining thereafter. Presence of 4 additional species of parasites was recorded, but only a cursory examination was made for them. These were the large strongyles, Strongylus vulgaris, S edentatus, and S equinus, from the cecum and a filariid, Setaria spp (probably S equina), from the abdominal cavity, for which recovery rates from the horses were 8%, 8%, 1%, and 7%, respectively.
1981年2月至1982年2月期间，对363匹1至26岁的纯种马（62匹雄性、292匹雌性和9匹去势雄马）进行了为期约12个月的尸检，以检查体内寄生虫。重点检查胃内的线虫以及小肠和盲肠内的绦虫。从胃中检出的寄生虫及其感染率如下：柔线虫属未成熟虫体（24%）、蝇柔线虫成虫（38%）、大口德拉什线虫未成熟虫体（13%）、大口德拉什线虫成虫（62%）以及马圆形线虫成虫（4%）；大体观察发现，58%的胃有大口德拉什线虫引起的病变。54%的马匹检出叶状裸头绦虫；未发现大裸头绦虫。胃线虫和绦虫的感染率在马匹的年龄或性别方面无明显差异。季节性差异仅在未成熟的柔线虫属和未成熟的大口德拉什线虫中明显，其感染率6月开始上升，10月达到峰值，此后下降。还记录到另外4种寄生虫，但仅对其进行了粗略检查。这些寄生虫分别是来自盲肠的大型圆线虫，即普通圆线虫、无齿圆线虫和马圆线虫，以及来自腹腔的丝状线虫类，即腹腔丝虫（可能是马腹腔丝虫），马匹的检出率分别为8%、8%、1%和7%。
