The relative resistance to gastrointestinal nematode infection of three British sheep breeds   总被引：1，自引：0，他引：1  

Nick Golding  Richard W. Small   《Research in veterinary science》2009,87(2):263-264

The relative resistance of Manx Loaghtan, Shetland and Southdown sheep to naturally acquired gastrointestinal nematode infection was assessed over a ten week period. Thirty shearling ewes, ten from each of the three breeds, were co-grazed on an infective pasture. The animals were initially treated with an anthelmintic to minimise previous nematode infection, and faecal samples were collected from individual animals every two weeks. Southdown sheep had significantly higher faecal egg counts (FEC) than Shetland by week 6, and than Manx Loaghtan by week 10. After ten weeks there was an 86-fold difference in FEC between Shetland and Southdown sheep, and a 14-fold difference between Manx Loaghtan and Southdown sheep. These preliminary results suggest that primitive Shetland and Manx Loaghtan sheep may have greater resistance to gastrointestinal parasites, a trait that could be of value to the UK livestock industry.  相似文献   

Molecular diagnosis and equine parasitology     

Hodgkinson JE 《Veterinary parasitology》2006,136(2):109-116

The future implementation of improved and sustainable control strategies for the major equine parasites will be dependent on a greater insight into their basic biology, pathogenicity and epidemiology together with an enhanced ability for accurate diagnosis. This paper will provide a review of the current molecular methods under development for the detection of equine parasites and their application to current scientific questions. In particular, the strongyles are recognised as important pathogens of horses and recent advances made in the study of this parasitic group at the single species level will be addressed. The ribosomal (r)DNA region of the parasite genome has been employed to distinguish between closely related species. Molecular probes designed to this target region were used in combination with PCR technology to allow the identification of individual species within mixed infections. They have been applied to all parasite stages to look at the role of individual species in natural infection, disease and drug resistance. Similar techniques have been developed to detect other equine parasites and these will also be discussed. Further opportunities for employing existing techniques and the need for new diagnostic tools will be highlighted.  相似文献   

Parelaphostrongylus tenuis Cerebrospinal Nematodiasis in a Horse with Cervical Scoliosis and Meningomyelitis          下载免费PDF全文

N.S. Mittelman  T.J. Divers  J.B. Engiles  R. Gerhold  S. Ness  P.V. Scrivani  T. Southard  A.L. Johnson 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2017,31(3):890-893

There are reports of horses with acute onset acquired cervical scoliosis and cutaneous analgesia. The underlying dorsal gray column myelitis that produces these neurologic signs has been only presumptively attributed to migration of Parelaphostrongylus tenuis within the spinal cord. Despite previous confirmation brain by polymerase chain reaction testing, of P. tenuis within the brain of horses by polymerase chain reaction testing, genetic testing has failed to definitively identify the presence of this parasite in cases of equine myelitis. This case report provides molecular confirmation via polymerase chain reaction of P. tenuis within the cervical spinal cord of a horse with scoliosis and cutaneous analgesia.  相似文献   

犬寄生虫病的诊断及其防治     

唐芳索 《内蒙古农业科技》2011,(1):116-117

犬的寄生虫病在兽医临床上占有重要地位,给养殖业造成较大危害,同时也严重地威胁到人体健康。如何对犬寄生虫病进行有效地诊断和防控,文章提出了规范的检测程序、检测方法和驱虫模式以及使用药物驱虫的注意事项。  相似文献   

河南省鹌鹑肠道寄生虫感染情况调查     

孟红丽  赵金凤  齐萌  孙艳茹  张龙现 《河南农业科学》2010,(12)

为了解鹌鹑肠道寄生虫感染情况,采用饱和蔗糖溶液漂浮法对河南省12个鹌鹑养殖场共711份粪便样品进行检查。结果表明,在鹌鹑体内发现4种肠道寄生虫,寄生虫总感染率达99.2%,其中8个养殖场的寄生虫感染率均为100%。球虫为主要感染虫种,感染率为99.2%,隐孢子虫、圆线虫和蛔虫感染率分别为6.0%、16.0%和1.1%;2～3种寄生虫混合感染率为20.1%。分析表明,鹌鹑肠道寄生虫感染较为严重,应加强其寄生虫病的防治工作。  相似文献   

寒地油菜种子寄生菌核病生物学特性研究     

吕静  骆忠伟  关泰杉 《种子世界》2010,(2):24-25

本研究对寒地油菜种子寄生菌核病菌的部分生物学特性进行了初步的研究,从油菜种子提取菌核病菌。结果表明,菌丝在吸管和番茄培养基上生长最快,菌丝生长的最适温度为20～25℃,最适pH值为5～7。  相似文献   

What Modeling Parasites,Transmission, and Resistance Can Teach Us     

《Veterinary Clinics of North America: Food Animal Practice》2020,36(1):145-158

  相似文献   

烟蚜茧蜂繁殖利用研究   总被引：18，自引：0，他引：18  

忻亦芬 《中国生物防治》1986,(3)

烟蚜茧蜂在沈阳以老熟幼虫在僵蚜内越冬,越冬场所主要在窖藏白菜及萝卜上,在温室条件下无滞育现象。烟蚜茧蜂的发育有效积温为308.28日度,在沈阳一年约可完成11～12个世代。用萝卜饲养桃蚜繁殖烟蚜茧蜂方法简便,一株萝卜平均可获僵蚜1296头,最多3856头。烟好苗蜂的寄生能力受温度的影响,以20～23℃中获得僵蚜数最多,一头雌蜂可获僵蚜117～143头。烟蚜茧蜂子代的雌雄性比,在18～25℃中为1:0.73。烟蚜茧蜂的寄主桃蚜在13～30℃温度中均能繁殖,20～27℃中繁殖速度最快。在塑料大棚内释放烟蚜茧蜂防治辣椒及黄瓜上桃蚜效果显著,而在不释放的对照区则施用了6次农药。  相似文献   

锦州地区宠物犬寄生虫流行区系及流行病学调查研究   总被引：2，自引：0，他引：2  

李久纯  赵晓薇 《安徽农业科学》2008,36(12):4990-4992

随机抽检锦州地区10家宠物门诊的50只宠物犬,用漂浮法和沉淀法检查粪便中的寄生虫卵,鉴定其种类,对其感染率和感染强度进行统计,最后确定优势虫种,并对其流行病学进行研究。结果发现,锦州地区宠物犬寄生虫有11种,其中优势虫种为犬弓首蛔虫、犬钩虫、犬复孔绦虫、疥螨和蠕形螨。通过现场考查及查阅有关资料确定了优势虫种流行病学的规律和特点,为锦州地区宠物犬寄生虫病的防治工作提供了科学依据。  相似文献   

我国岩羊寄生虫研究现状     

史沁欣  张长生  彭智伟  胡智博  宋治燕  袁发明  刘振生  侯志军 《安徽农业科学》2014,(23):7785-7787,7798

采用文献分析法对我国岩羊寄生虫的相关研究进行总结,发现岩羊可感染的寄生虫共42种。其中,线形动物门有尾感器纲的圆线目线虫共有16种,无尾感器纲的毛尾目的线虫共有2种,共18种寄生虫,占感染总数的42.86%;扁形动物门吸虫纲的复殖目有9种,绦虫纲的圆叶目有5种,共14种寄生虫,占感染总数的33.33%。蠕虫(线虫、吸虫、绦虫)共计32种,占感染总数的76.19%;原生动物门孢子虫纲中的真球虫目有6种,鞭毛虫纲阿米巴目有1种,共7种寄生虫,占感染总数的16.67%;节肢动物门昆虫纲中的虱目、双翅目、蚤目各有1种,共3种寄生虫,占感染总数的7.12%。岩羊感染的寄生虫以蠕虫为主。  相似文献