共查询到20条相似文献，搜索用时 140 毫秒
1.
《畜牧兽医科技信息》2017,(8)
正犬巴贝斯虫病是犬的一种血液寄生虫病,其病原体为巴贝斯虫或其他焦虫。临床上,本病主要表现为呼吸困难、高度贫血、黄疸、血红蛋白尿等特征。犬巴贝斯虫病在我国目前发病越来越多。1病原特征据报道,引起本病的病原主要有犬巴贝斯虫、吉氏巴贝斯虫及韦氏巴贝斯虫。犬巴贝斯虫和吉氏巴贝斯虫的感染在我国常见,但韦氏巴贝斯虫在我国尚未见报道。1.1犬巴贝斯虫犬巴贝斯虫寄生于犬的红细胞内。虫体为梨形,一端尖,另一端圆,内有一个空泡,典型虫体大于1/5红 相似文献
2.
3.
4.
5.
6.
正吉氏巴贝斯虫是一种犬的血液原虫病,主要经蜱虫叮咬传播,容易导致犬贫血,眼结膜黄染,机体食欲不振,渐进性消瘦,红尿等症状。笔者接触了5例吉氏巴贝斯虫病例,并参与了诊治。本文对临床发生的犬吉氏巴贝斯虫病例进行了分析,得出了一些关于犬吉氏巴贝斯虫的诊断与治疗体会。吉氏巴贝斯虫是一种寄生于犬红细胞的血液原虫病,虫体很小,多寄生于红细胞的边缘或偏中央,多原点形,一个红细胞内可寄生一个或多个虫体。虫体的发 相似文献
7.
8.
9.
犬巴贝斯虫病是由巴贝斯虫（原称焦虫）引起,经蜱传播,寄生于犬血液红细胞内的寄生虫病.犬巴贝斯虫病的病原主要有3种,即犬巴贝斯虫、吉氏巴贝斯虫、韦氏巴贝斯虫.1 流行病学巴贝斯虫是通过中间宿主蜱感染的.蜱叮咬患巴贝斯虫的病犬,巴贝斯虫就随血液红细胞进入蜱的消化道,在蜱消化道内虫体从红细胞内逸出,侵入蜱肠上皮细胞进行多数分裂,形成很多细长虫体,进入蜱的成熟卵内发育.分类号：S858.292 文献标识码：B文章编号：1005-7307（2013）06-0038-002 相似文献
10.
《浙江畜牧兽医》2021,(5)
为了诊断犬的巴贝斯虫病并鉴定巴贝斯虫的种类,本研究对病犬进行临床检查、生理生化检查、血涂片检查,并应用分子生物学方法对虫种进行鉴定。采取病犬血液做血涂片染色后于显微镜下观察到梨籽形状虫体,初步怀疑是巴贝斯虫,随后进行分子生物学鉴定。结果患病犬血液样本中扩增获得的18S rDNA序列长度为1560 bp与GenBank登录的Babesia gibsoni(MN928823.1)相似度为99.94%。并将该序列与GenBank中不同国家和地区的巴贝斯虫18S rDNA序列构建进化树,通过比对发现获得的序列与各地区B.gibsoni处于同一进化分支中,并与中国西安株序列(MN928823.1)亲缘关系最近。经临床检查、血常规检查和血涂片检查确定该犬患有巴贝斯虫病,经分子生物学方法最终确定感染的巴贝斯虫病原为吉氏巴贝斯虫(B.gibsoni)。 相似文献
11.
12.
Ikawa K Aoki M Ichikawa M Itagaki T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(10):1359-1361
In the present study, we tried to detect DNA for ribosomal RNA genes of piroplasma parasites from the liver or blood of 43 Japanese serows (Capricornis crispus) in Iwate Prefecture of Japan by polymerase chain reaction. Approximately 500-bp amplicons were obtained in 35 (81.4%) of the 43 samples by amplification for V4 hyper-variable regions of the 18S rRNA gene, and the amplicons were considered to be DNA of Theileria species. The complete nucleotide sequences (1,700 or 1709 bp) of the 18S rRNA gene were determined in 20 samples and were divided into 5 genotypes that were phylogenetically separated into two different lineages showing a polyphyletic relation. The Theileria DNAs of the two different lineages were considered to be those of distinct species. 相似文献
13.
马梨形虫病是由马驽巴贝斯虫和马泰勒虫寄生于马属动物的红细胞内所引起的一类血液原虫病,呈全球性分布,尤其在新疆发病率更高,处于逐年上升趋势,对区域性马产业的发展影响极大。为了解2018年新疆昭苏养马区域马梨形虫的感染情况,随机采集昭苏县18个乡镇的马全血及血清各858份,采用PCR和间接ELISA分别进行检测,对两种方法检测的18个地区、不同年龄阶段的马驽巴贝斯虫、马泰勒虫及混合感染情况进行统计学分析。结果显示,PCR检测马驽巴贝斯虫、马泰勒虫及混合感染的阳性率分别为12.12%、13.87%和2.80%;间接ELISA检测马驽巴贝斯虫、马泰勒虫及混合感染的抗体阳性率分别为15.50%、10.14%和2.56%;不同年龄阶段筛查结果显示,在6岁以下的马匹感染马驽巴贝斯虫、马泰勒虫及混合感染的阳性率较高,并且不同地区的不同年龄阶段马匹的马梨形虫感染率存在不同程度的差异。此次获得的昭苏县马梨形虫感染情况的一线数据,可为当地养马区域马梨形虫病的综合防控提供技术支撑。 相似文献
14.
G Castrucci V Cilli F Frigeri M Ferrari S Ranucci L Rampichini 《Comparative immunology, microbiology and infectious diseases》1983,6(3):193-199
Two experiments were carried out to determine whether Bovid herpsvirus (BHV) 2 is able to induce a recurrent infection in experimentally infected calves. In the first experiment the stress induced by dexamethasone (DMS) treatment failed to reactivate the clinical condition or to induce shedding of BHV2. However, treatment with DMS reactivated a latent BHV1 infection in all calves previously inoculated with BHV2 and also in two noninoculated controls. Probably, because of the interference by BHV1 the study failed to resolve the question as to whether BHV2 could induce a recurrent infection. Consequently, a second experiment was performed using calves devoid of antibody to BHV1 and, therefore, probably, free of virus. By this study it was demonstrated that BHV2 can remain as a latent infection in cattle, which, when immunosuppressed as with DMS, can be reactivated. A finding of considerable interest in this experiment was that in 1 calf a concurrent piroplasma infection was also, unexpectedly, discovered.Recrudescence of latent BHV1 infection was induced by DMS treatment of calves possessing antibody to the virus. The infection once reactivated, was readly transmitted by contact to three other calves devoid of antibody to BHV1. In the same experiment Parainfluenza-3 (PI-3) virus was unexpectedly isolated from all calves. It was speculated that all calves were latently infected with PI-3 virus with concurrent infection by BHV1 acting as a stress inducing PI-3 reactivation.These studies seem to indicate that mixed infections could have an important role in the mechanism involved in the establishment of latent infections and viral reactivation. 相似文献
15.
Experiments on the transmission of an unidentified Theileria sp. infective for small ruminants by Haemaphysalis qinghaiensis and Hyalomma anatolicum anatolicum were carried out. Three Theileria-free batches of adult, larvae, and nymphs of laboratory reared H. qinghaiensis and Hy. a. anatolicum ticks were infected by feeding them on sheep infected with Theileria sp. The Theileria sp. was originally isolated from adult ticks of H. qinghaiensis, by inoculation of blood stabilates or tick transmission. H. qinghaiensis has been shown to be capable of transmitting the Theileria sp. infective for small ruminants transstadially to sheep and goats. The nymphs developed from the larvae engorged on the sheep infected with the parasite transmitted the pathogen to splenectomized sheep with prepatent periods of 30, 31 days, respectively; but the subsequent adult ticks of H. qinghaiensis derived from the nymphs did not transmit the pathogen to sheep. However, adults developed from the nymphs engorged on the sheep infected with the parasite transmitted the pathogen to sheep with prepatent periods of 24-27 days. The larvae, nymphs and adult ticks derived from female H. qinghaiensis ticks engorged on infected sheep were not able to transmit the parasite transovarially. The same experiments were done with Hy. a. anatolicum, but examination for presence of piroplasma of Theileria sp. from all animals were negative, demonstrating that Hy. a. anatolicum could not transmit the organism to sheep or goats. 相似文献
16.
G Weiland 《Veterinary parasitology》1986,20(1-3):43-48
The increasing horse trade requires a reliable immunodiagnosis of equine piroplasma infections due to import restrictions imposed by various countries, including the United States of America. It was the aim of our investigations to establish the suitability of serological tests for the detection of parasite carriers and, eventually, to differentiate between Babesia caballi and B. equi infections. The investigations were carried out on 11 ponies with experimentally-induced B. caballi and/or B. equi infection. The infections were confirmed by the demonstration of parasites in blood smears 2-13 days post infection (PI). The complement fixation test (CFT), the indirect immunofluorescence (IIF) and the enzyme-linked immunosorbent assay (ELISA) were employed for the demonstration of antibodies, and different antigen preparations were tested for their suitability. Antibodies could be demonstrated by all three tests. Complement-fixing antibodies disappear after 2-3 months PI in B. caballi-infected horses, while the IIF and ELISA gave positive results during latent infection. A reliable serodiagnosis thus requires the use of the CFT and IIF, since parasite carriers may appear seronegative by the CFT. Serological differentiation between B. caballi and B. equi was possible by CFT and, to a certain extent, by IIF during early infection, but not by ELISA. The successful treatment of B. caballi infections with Berenil could only be confirmed serologically by IIF. 相似文献
17.
非植物寄生线虫是土壤中的有益线虫。在2018年对锡盟露天煤矿不同植被恢复方式下排土场非线虫种类及数量进行了研究,结果表明:排土场的植被恢复区非植物寄生线虫种类、数量高于无恢复区;在0~10cm土层处,恢复4年、恢复8年及天然草地有3个优势属,而无恢复区有2个属;10~20cm土层中恢复8年区优势属为3个,而恢复4年区优势属为2个,天然草地及无恢复区优势属均为1个;矿区排土场种植被恢复区出现土壤cp值为4的线虫类型,而无恢复区没有此类线虫。由此可见,植被恢复使土壤非植物寄生线虫种类及数量发生了改变,有利于排土场土壤的改善。 相似文献
18.
The presence of gastric parasites in winter-slaughtered calves and adult animals, was investigated. The number of parasites found was low in case of the calves indicating that gastric worms are of low significance concerning the winter losses. In case of adult animals was found a higher infestation indicating that gastric nematodes maybe of importance concerning the winter losses of 1,5 years old animals, Ostertagia leptospicularis was the only found species except for one animal in which was also present a few spiculopteragia alcis. The total dominance of Ostertagia leptospicularis means a marked difference from the findings of autumn-slaughtered reindeer bulls where Ostertagia leptospicularis was not found to be such a frequent finding but in addition several other species were found. In view of that is discussed a seasonal varation, winter ostertagiosis seems not to be a problem in reindeer calves. 相似文献
19.
S Gür G Türk E Demirci A Yüce M Sönmez Ş Özer EH Aksu 《Reproduction in domestic animals》2011,46(2):289-295
The aim of this study was to determine the changes in diameter of corpus luteum (CL), maternal progesterone (P) concentration, lipid peroxidation and non‐enzymatic antioxidant levels along with enzymatic antioxidant activities in pregnant ewes bearing single and twin foetuses. The ewes were selected from healthy animals that were brought to the abattoir for slaughtering. The ewes were divided into three groups: Group 1 (non‐pregnant, non‐oestrous, n = 30), Group 2 (pregnant bearing a single foetus, n = 30) and Group 3 (pregnant bearing twin foetuses, n = 12) after they were slaughtered. Pregnant ewes were in the first half of the pregnancy. The diameter of CL and P concentration of pregnant ewes bearing a single foetus or twin foetuses were found higher than that found in non‐pregnant ewes. Similarly, the P concentration of pregnant ewes bearing twin foetuses was higher than that found in pregnant ewes bearing a single foetus. Malondialdehyde (MDA) level in pregnant ewes bearing twin foetuses was higher than that found in both non‐pregnant and pregnant ewes bearing a single foetus. The serum glutathione (GSH) level and glutathione‐peroxidase (GSH‐Px) activity of pregnant ewes bearing twin foetuses were found lower than that found in non‐pregnant ewes. Additionally, the GSH‐Px activity of pregnant ewes bearing twin foetuses was found lower than that found in pregnant ewes bearing a single foetus. No significant difference was found between pregnant ewes bearing female and male foetus with respect to diameter of CL, P concentration and oxidative stress parameters. There were significant positive correlations between foetal number (0, 1, 2) and diameter of CL, P concentration, MDA level, and between P concentration and diameter of CL, MDA level. However, significant negative correlations were found between foetal number (0, 1, 2) and GSH level, GSH‐Px activity, and between P concentration and GSH‐Px activity. In conclusion, the diameter of CL enlarges, P production increases and oxidant/antioxidant balance impairs because of the gestation stress in ewes during pregnancy. 相似文献
20.
自１９９４～１９９６年对５０００多头牛应用倍硫磷浇泼剂防治牛皮蝇蛆病。经治疗过的牛食道中或背部皮下所发现的幼虫数不到未治疗对照牛的３％，杀虫率达９７％以上。此外，并发现此种药剂的杀虫效率高于倍硫磷注射剂７％，被治疗牛只未出现任何中毒症状。 相似文献