Department of Biological Sciences, Marshall University, One John Marshall Drive, Huntington, WV 25755, USA.
Vet Parasitol. 2011 May 31;178(1-2):115-20. doi: 10.1016/j.vetpar.2010.12.034. Epub 2011 Jan 12.
Coprological examination was used to determine prevalence of gastrointestinal helminthes in a sample of 231 dogs (117 females and 114 males) during the summer of 2009 at a veterinary clinic in south central West Virginia, USA. Clinical signs (e.g., diarrhea, vomiting, weight gain or loss) were noted in addition to a history of anthelmintic usage. A total of 79 dogs (33.6%) were infected with one or more intestinal nematodes. Most dogs (58) were parasitized with a single species, 19 were parasitized with 2 species, and 2 were parasitized by 3 species. There was no significant difference (i.e., X(2)<3.84; P>0.05) in prevalence of infection between female and male dogs for any of the identified nematode species. The chi-square test for equality of proportions was used to determine prevalence of infection in 3 age categories of dogs (females and males combined): young dogs (≤12 months of age); mature dogs (13-83 months); and old dogs >83 months. Prevalences of infection for Ancylostoma caninum and Toxocara canis were significantly (P<0.005) higher in young dogs, whereas there was no significant difference (P>0.05) in prevalence by age category for Trichuris vulpis. Dogs exhibiting clinical signs were no more likely to harbor intestinal nematodes than dogs that were asymptomatic. Additionally, dogs receiving heartworm treatment were significantly less likely to be parasitized than dogs receiving no heartworm prophylaxis.
在 2009 年夏天,在美国西弗吉尼亚州中南部的一家兽医诊所,对 231 只狗(117 只雌性和 114 只雄性)进行了粪便检查,以确定胃肠道蠕虫的流行情况。除了驱虫药使用史外,还记录了临床症状(如腹泻、呕吐、体重增减)。共有 79 只(33.6%)狗感染了一种或多种肠道线虫。大多数狗(58 只)被单一物种寄生,19 只被两种物种寄生,2 只被三种物种寄生。在任何一种鉴定出的线虫物种中,雌性和雄性狗的感染率都没有显著差异(即 X(2)<3.84;P>0.05)。卡方检验用于确定 3 个年龄组(雌性和雄性狗合并)的感染率:幼犬(≤12 个月龄);成熟犬(13-83 个月);老年犬(>83 个月)。犬钩口线虫和犬蛔虫的感染率在幼犬中显著较高(P<0.005),而在不同年龄组中,犬旋毛虫的感染率没有显著差异(P>0.05)。有临床症状的狗比无症状的狗更有可能携带肠道线虫。此外,接受心丝虫治疗的狗比未接受心丝虫预防的狗寄生虫感染的可能性显著降低。