共查询到20条相似文献，搜索用时 46 毫秒
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斧钩华首线虫的扫描电镜观察陶建平,符敖齐（扬州大学农学院动医系２２５００９）斧钩华首线虫（ＡｃｕａｒｉａｈａｍｕｌｏｓａＤｉｅｓ－ｉｎｇ,１８６１）寄生于鸡和火鸡等禽类的肌同角质膜下,幼鸡严重感染可发生急性死亡。该虫在光镜下的形态结均,前人已有详细描... 相似文献
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对厚尾扭头线虫雌虫和鹅裂口线虫进行了扫描电镜观察与比较，其中 尾扭头线虫雌虫是首次进行扫描电镜观察。结果，厚尾扭头线虫雌虫口囊边缘具有4个乳突，从口囊底部伸出的角质齿呈棱形的利刃状；鹅裂口线虫雌虫口囊边缘无明显的乳突，但有阴门盖。 相似文献
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禽胃线虫病是由四棱属的美洲四棱线虫、分棘四棱线虫等和华首属的旋形华首线虫(旋锐形线虫)、斧钩华首线虫(小钩锐形线虫)等,寄生于禽类的食道、腺胃、肌胃和小肠而引起的一种线虫病,一般多为动物吞食了含有感染性幼虫的中间宿主所致。我园饲养的白枕鹤发生1例旋形华首线虫病,现将有关情况报道如下。1发病情况及临床症状我园涉禽区饲养丹顶鹤6只,白枕鹤4只,灰鹤4只,均为成年。2004年7月底,发现一只白枕鹤精神沉郁,宿立一旁,不愿走动,两翅下垂,羽毛松乱,粪便稀薄呈白色,捉出检查发现机体消瘦,未经治疗死亡。2剖检变化皮下肌肉苍白,无血色。血… 相似文献
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对牛腹腔唇乳突丝虫雌性成虫及其感染蚴扫描电镜观察结果表明,成雌虫头端的口孔、角质围口环、侧唇、背腹唇、亚中乳突和头感器均清晰可见,体表为环行皮纹和纵行皱褶,尾部可见侧附肢、肛孔及尾端刺状突起物,仅极少数成雌虫尾端呈纯圆光滑样,没有突起物.感染蚴的头部基本具备了成虫头部的构造,但发育较原始,其乳交数量较成虫少,尾部可见肛孔、肛唇及一个侧乳突. 相似文献
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Han Hu Changsheng Jiang Binzhou Zhang Nan Guo Zhonghua Li Xiaozhen Guo Yang Wang Binlei Liu Qigai He 《Journal of veterinary science (Suw?n-si, Korea)》2021,22(5)
BackgroundAntimicrobial peptides (AMPs) have been identified as promising compounds for consideration as novel antimicrobial agents.ObjectivesThis study analyzed the efficacy of cecropin B against Haemophilus parasuis isolates through scanning electron microscopy (SEM) and atomic force microscopy (AFM) experiments.ResultsCecropin B exhibited broad inhibition activity against 15 standard Haemophilus parasuis (HPS) strains and 5 of the clinical isolates had minimum inhibition concentrations (MICs) ranging from 2 to 16 μg/mL. Microelectrophoresis and hexadecane adsorption assays indicated that the more hydrophobic and the higher the isoelectric point (IEP) of the strain, the more sensitive it was to cecropin B. Through SEM, multiple blisters of various shapes and dents on the cell surface were observed. Protrusions and leakage were detected by AFM.ConclusionsBased on the results, cecropin B could inhibit HPS via a pore-forming mechanism by interacting with the cytoplasmic membrane of bacteria. Moreover, as cecropin B concentration increased, the bacteria membrane was more seriously damaged. Thus, cecropin B could be developed as an effective anti-HPS agent for use in clinical applications. 相似文献
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Busaba Panyarachun Arin Ngamniyom Prasert Sobhon Panat Anuracpreeda 《Journal of veterinary science (Suw?n-si, Korea)》2013,14(4):425-432
In the present study, we evaluated the histological morphology of the adult Paramphistomum (P.) gracile. Adult flukes with bodies 5~15 mm in length and 2~7 mm in width were subjected to histological analysis. Longitudinal and transversal serial-sections were stained with hematoxylin and eosin, and examined. The body surface and longitudinal section of P. gracile were also assessed using scanning electron microscopy. In this species, the anterior sucker and posterior sucker (acetabulum) were present on an anterior and posterior part of the body, respectively. The major folds were located in the areas of the anterior sucker, genital canal, and posterior sucker. The fluke membrane was spineless at the tegument surface and in the tegument tissue. Histological data showed structural-systematic characteristics of the digestive tract, reproductive tract, excretory tract, copulatory organs, connective tissues, and muscle tissues. We attempted to elucidate the histological characteristics of P. gracile that might increase the knowledge and understanding of rumen fluke morphology. 相似文献
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观察了5只健康成年母鸡腺胃粘膜上皮及其固有层腺体的亚显微结构。结果,粘膜表面散布许多隆起的乳头,其上皮为单层柱状上皮,上皮细胞顶端呈球状冠,表面布满球形微突;浅层单管腺上皮细胞形态与粘膜上皮细胞相似;深层复管腺的分泌导管开口于乳头顶端。复管腺由许多圆形或多形性小叶组成,每个腺小叶包括1个集合窦和许多围绕集合窦呈辐射状排列的腺小管。腺小管上皮细胞游离端呈椭球状冠。 相似文献