绵羊片形吸虫病和线虫病病情程度的检测与治疗试验

为探讨用廖党金改进的方法对绵羊片形吸虫病和线虫病病情程度的同时诊断及防治，随机抽样试验场56只绵羊进行粪便虫卵检查和计数，结果56只绵羊全部感染寄生虫病，感染的寄生虫主要有片形吸虫、鞭虫、细颈线虫、肺线虫及消化道其它线虫；有48只绵羊感染片形吸虫病，感染率85．7％，56只绵羊均感染线虫病，感染率100％。将该56只绵羊分组，42只绵羊治疗和14只绵羊对照，即A组试验10只(未成年羊)，对照4只；B组试验13只(2～2．5岁)，对照5只；C组试验19只(3岁以上)，对照5只。用复合药物治疗，结果治疗组42只绵羊的片形吸虫虫卵转阴，转阴率100％；对照14只绵羊的片形吸虫虫卵均未转阴；治疗绵羊中41只线虫虫卵转阴，即转阴率97．6％，对照14只绵羊的线虫虫卵均未转阴。表明用廖党金方法可以同时对绵羊的片形吸虫病和线虫病病情程度作诊断，该复合药物对绵羊片形吸虫病和线虫病均有很好的疗效。     

北京地区奶牛粪样寄生虫调查报告

2011年4月-2012年3月,通过对北京市房山区、大兴区、怀柔区、通州区和密云县的奶牛养殖进行现场调研,采集新鲜粪样3000份,用饱和盐水漂浮法和水洗沉淀法对粪样进行了定性检查,用麦克马斯特计数法对线虫卵和球虫卵囊进行了定量检查。在粪样中没有检出吸虫卵;线虫卵感染率为6.37%,感染强度(EPG)在100～750之间,平均感染强度为206,并在秋季出现一个高峰;球虫卵囊感染率为46.03%,感染强度(OPG)在100～7250之间,平均感染强度为748,并在夏季出现一个高峰。结果表明,北京地区奶牛消化道寄生虫中,球虫卵囊阳性率较高,线虫卵阳性率相对较低,没有吸虫卵。有一定的季节性动态变化。     

绵羊肠道寄生虫感染情况调查

为了解河南省绵羊肠道寄生虫感染情况,应用寄生虫常规检测方法对5个规模化养羊场共1265份粪样进行了寄生虫感染情况调查。结果显示,共检出虫卵和卵囊5类,其中原虫2类(球虫、隐孢子虫)、线虫2类（类圆线虫、鞭虫）、绦虫1类。本次调查中共发现1178份粪便样品为寄生虫阳性,寄生虫总感染率为93.12％(1178／1265),5个绵羊场的隐孢子虫平均感染率为3.10％,球虫平均感染率为88.94％,鞭虫平均感染率为10.83％,类圆线虫平均感染率为59.11％,绦虫平均感染率为43.96%。本次调查发现绵羊寄生虫混合感染现象比较严重,其中球虫、绦虫和类圆线虫混合感染的比例达到60.10％;绵羊寄生虫感染率呈现随着年龄的增长而减少的趋势。     

门源县珠固乡幼年绵羊消化道线虫感染动态观察

通过对本地区幼年绵羊消化道线虫感染进行动态观察,其结果表明:幼年绵羊消化道线虫在11月份和3月份分别形成2次虫荷量高峰,在3月份形成1次虫卵量高峰,并且具有感染率高、感染强度大的特点。通过采取轮牧、适时合理驱虫等综合防治技术,可有效降低消化道线虫感染率和虫荷量。     

巴彦淖尔地区舍饲成年肉羊消化道线虫感染的调查

近年来,内蒙古地区肉羊产业向规模化、集约化方向转变,但相应的寄生虫病防治体系依然属于空白。本文对巴彦淖尔地区舍饲条件下成年肉羊的消化道线虫感染的流行规律进行了调查。结果:该地区全舍饲条件下消化道线虫有8种,总感染率为100%。其中捻转血矛线虫(H.contortus)、蛇形毛园线虫(T.colubriformis)和奥拉齐细颈线虫(N.oiratianus)为优势虫种,并且多为混合感染。经过定期跟踪,消化道线虫的季节消长规律呈现一个高峰期。     

奥芬达唑干混悬剂对黄牛线虫的驱除试验

应用奥芬达唑干混悬剂分别按5、10、15mg／kg．bw剂量1：2服给药，驱除黄牛自然感染线虫，投药后14d粪检结果：15mg／kg剂量试验组虫卵(幼虫)转阴率、减少率均为100％；10mg／kg剂量对消化道线虫虫卵转阴率909／5，减少率99．9％，原圆科线虫幼虫转阴率909／5，减少率94．6％；5mg／kg剂量对消化道线虫虫卵转阴率80％，减少率99．2％，对原圆科线虫幼虫转阴率70％，减少率91．1％；而对照组同期检查虫卵(幼虫)给药前后无明显变化。第21d剖检结果：15mg／kg、10mg／kg、5mg／kg剂量总计驱虫率分别达99．2％、97．4％和95．7％。均达到了高效。     

天祝藏族自治县绵羊内寄生虫感染的季节动态调查

为了解高寒牧区绵羊内寄生虫季节消长规律,选择了代表草原草场类(干旱草原类型)和灌丛草甸草场类(潮湿草原类型)的乡各1个,对111只羊逐一编号,每月定期用绵羊蠕虫学全身剖检9～10只,对所获全部寄生虫分类鉴定,最后统计结果.通过调查明确了两类草场地区绵羊感染内寄生虫种类,基本掌握了绵羊内寄生虫感染季节消长变化情况,提出了当地绵羊内寄生虫的最佳驱治时间,为拟定当地绵羊寄生虫病防治措施提了供重要参考依据.     

冬季新疆普氏野马消化道寄生虫感染情况及驱虫试验

为了了解新疆普氏野马消化道寄生虫感染情况及内外通灭(伊维菌素预混剂)对普氏野马消化道寄生虫的驱虫情况,试验于2018年1月份对新疆野马繁殖研究中心的65匹野马进行了冬季驱虫试验;试验采用饱和盐水漂浮法对65匹普氏野马进行了驱虫前后检查,分析其感染率以及跟踪检查给药后的驱虫率,并通过虫卵计数法(麦克马斯特氏法)分析其感染强度。结果表明:在采集的65份新鲜粪样中,含有消化道线虫虫卵的样品共54份,感染率为83%(54/65);初步检查出的虫卵包括马圆线虫、马副蛔虫、细颈三齿线虫和毛细线虫4种。其中马副蛔虫的感染率最高,为71%(46/65),两种虫种(马副蛔虫、毛细线虫)混合感染率达到43%,每克粪便虫卵数(EPG)为800～2 300个,三种虫种(毛细线虫、马副蛔虫、马圆线虫)混合感染率为17%,EPG为400～1 200个。驱虫后的65份样品,虫卵转阴率达到77%(50/65);虫卵减少率达到95%。说明内外通灭对普氏野马消化道寄生虫具有较好的驱虫作用。     

共和县绵羊寄生虫感染情况调查报告

2004-2006年,对共和县绵羊寄生虫感染和危害情况进行了调查,结果：绵羊线虫粪检阳性率100％,线虫、绦虫和吸虫剖检感染率分别为100％、27．5％和60％,外寄生虫主要有绵羊虱蝇、草原草蜱和羊鼻蝇幼。文中并对危害以及防治情况进行了讨论和分析。     

江西滨湖麻鸭寄生蠕虫感染的消长动态

对江西滨湖麻鸭寄生虫的优势种棘口吸虫、膜壳绦虫、毛细线虫进行了虫体寄生量、粪中虫卵排出量的逐月观察,结合气象资料如：气温、地温、降水量、日照的观察记录,得出这些优势种在麻鸭体内的季节动态以及与气象参数的相关性。蠕虫寄生有2个高峰,第1个高峰于6月,第2个高峰于9～10月;感染率的高峰较感染强度高峰晚2个月出现;虫卵第1个高峰比虫体第1个高峰迟2个月出现;蠕虫感染动态消长变化与月平均气温、地温因子有正相关性,差异极显著（p＜0．01）,与日照有显著正相关（p＜0．05）,与降雨量、相对湿度相关不显著（P＞0.05）;感染强度与气象参数的相关均不显著（p＞0．05）。从日龄来看,30日龄幼鸭受蠕虫感染最严重,随着日龄增加,寄生蠕虫的感染强度和虫种数明显减少。     

国内生态恢复研究进展

本文介绍了生态恢复的研究进展,从生态恢复的定义、退化生态系统的指标等方面进行阐述,重点对国内在恢复生态学方面的进展做了介绍.对当前的人工草地、草地农业的研究情况做了一些概述.     

国内生态恢复研究进展

本文介绍了生态恢复的研究进展,从生态恢复的定义、退化生态系统的指标等方面进行阐述,重点对国内在恢复生态学方面的进展做了介绍。对当前的人工草地、草地农业的研究情况做了一些概述。     

Veterinary pathology in Europe in the light of the congresses of the European Society of Veterinary Pathology in the last decade

This paper presents the main trends in the activity of European veterinary pathologists in the context of their oral presentations (plenary lectures and short presentations) and posters provided during annual meetings of the European Society of Veterinary Pathology (ESVP), in the decade 1997-2006. It was found that the issue that was most often brought up in the meetings was organ pathology (566 presentations). Infectious and parasitical diseases were only slightly less frequent (548 presentations). Oncology was another common issue (404 presentations). During this decade, 52 plenary lectures were presented, 765 oral presentations and 1 072 posters. Altogether, 1 889 presentations were made, which is between 127 and 238 per year. Research by Polish scientists accounted for 3.16% of all presentations. Additionally, the subject matter discussed at the annual meetings is analysed, and the trends in the development of veterinary diagnostic pathology and broad pathology education are indicated. It is shown that veterinary pathology enhances knowledge in the field of veterinary medicine by fulfilling a cognitive and diagnostic role.     

Application of the log-linear model in the prediction of the antinuclear antibody test in the dog

To find possible associations between antinuclear antibody (ANA) pattern, ANA titer, and certain clinical changes and clinical laboratory test results in dogs, the veterinary medical records of 111 ANA-positive and 126 ANA-negative dogs were examined. Variables could not be found that had significant associations with ANA pattern (unlike the results in persons), because of the predominance of 2 patterns. A log-linear model for ANA titer adequately fit the observed frequency and included 2-way interactions between titer and polyarthritis, titer and hematologic disorders, and polyarthritis and lymphadenopathy.     

Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog

Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum.     

Disturbance in the growth of the radius in dogs

In a 4-year period nine dogs have been met in which there was incomplete growth of the radius. The condition was unilateral in eight dogs and bilateral in one. Two were littermates. The defect is due to premature cessation of growth of the distal growth plate of the radius but the cause of this is not precisely known. It is recognized by characteristic radiographic changes in radius length, elbow joint space and premature closure of the distal growth plate of the radius. A method of surgical treatment has been devised and has proved beneficial in five dogs. Zusammenfassung. In einer Vierjahresperiode wurden neun Hunde beobachtet, bei denen ein unvollständiges Wachstum des Radius vorlag. Bei acht Hunden war der Zustand nur auf einer Seite zu finden, bei einem Hund auf beiden Seiten. Zwei der Hunde gehörten zum gleichen Wurf. Der Mangel ist auf verfrühte Wachstumseinstellung der distalen Wachstumsplatte des Radius zurückzuführen, jedoch ist die Ursache davon nicht genau bekannt. Er wird an charakteristischen radiographischen Veränderungen der Radiuslänge, des Ellbogengelenkzwischenraums und vorzeitigem Abschluss der distalen Wachstumsplatte des Radius erkannt. Es wurde eine chirurgische Behandlungsmethode entwickelt, die sich bei fünf Hunden als nutzlich erwies. Résumé. Au cows d'une période de 4 ans on a observé 9 cas de croissance incomplète du radius chez des chiens; l'anomalie était unilatérale dans 8 cas et bilatérale dans un cas; deux chiens appartenaient à la même portée. L'anomalie est due à l'arrêt prématuré de croissance de la plaque de croissance distale du radius, mais la cause n'en est pas encore connue d'une manière précise. Le diagnostic se fait par les signes radiologiques caractéristiques, modifications de la longueur du radius, de l'articulation du coude et soudure prématurée de la plaque de croissance du radius. On a élaboré une méthode de traitement chirurgical, qui s'est montrée favorable chez 5 chiens.     

Modelling the transmission of Echinococcus granulosus in dogs in the northwest and in the southwest of Morocco

Echinococcus granulosus (E. granulosus) infection was studied in 151 dogs in two regions of Morocco: 68 dogs in the northwest (Loukkos) and 83 dogs in the southwest (Tiznit). The mean prevalence rates of echinococcosis in dogs were 58.82% (46.23-70.63%) in Loukkos and 55.42% (44.10-66.34%) in Tiznit and the mean abundances of E. granulosus per dog were 75 (59-93) and 547 (504-595), respectively. The mean abundance of E. granulosus in dogs was fitted to a negative binomial distribution by the maximum likelihood techniques to define parameters. E. granulosus was aggregated in dogs in the two regions. The prevalence of infection and the abundance of E. granulosus in dogs were fitted to mathematical models in order to determine if the parasite population is partly regulated by definitive host immunity. The best fit was obtained with the models assuming the presence of immunity. The mean time of exposure to infection was similar in the two regions and ranged from 8 months to about 2 years. The infection pressures (number of E. granulosus) obtained per dog each year were 65 (8-294) in Loukkos and 476 (316-886) in Tiznit. The proportion of dogs susceptible to infection was still high along the life of the dogs in Loukkos, while it was not different from zero in old dogs of Tiznit.