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猪和兔附红细胞体的形态学及生殖方式观察 总被引：12，自引：0，他引：12
应用光镜和电镜对猪和兔附红细胞体的显微和超微结构进行了观察。结果表明，猪和兔附红细胞体在光镜和电镜下的形态结构、大小以及在红细胞上的附着方式等均无显著差别，其形态多为球形、卵圆形，直径0．2～2．5pm，在红细胞表面以一根或数根纤丝连接成串珠状或单个寄生。在透射电镜下，首次观察到附红细胞体边缘有一段20～30nm厚的光亮区域，并且在扫描和透射电镜下同时观察到附红细胞体的出芽生殖现象。由此推测，附红细胞体的发育方式为成熟的附红细胞体以出芽的方式产生1个未成熟形态的附红细胞体，随着未成熟形态附红细胞体的发育，逐渐从成熟附红细胞体体内脱离出来，最后以纤丝与成熟附红细胞体相连接；脱离出来的未成熟形态的附红细胞体黏附到同一红细胞或临近红细胞的膜上，最终发育成1个成熟的附红细胞体。 相似文献
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《中国畜牧兽医文摘》2015,(7)
<正>猪附红细胞体病是由附红细胞体寄生于红细胞表面或血浆及骨髓中的一种人畜共患病。病猪以急性黄疸性贫血、发热为特征。早在1932年印度就有报道。近几年该病突然增多,在国内很多猪场发生和流行,给养猪业带来了很大的经济损失,引起了人们的重视。1病原体猪附红细胞体呈现球形、卵圆形、逗点形、月牙形等多种形态,直径0.2~1.5μm,最大可达2.5μm,附于红细胞表面或在血 相似文献
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《养殖与饲料．饲料世界》2018,(12)
附红细胞体病是由附红细胞体引起的一类人畜共患传染病,附红细胞体寄生在红细胞表面、血浆或骨髓中,通常发生在猪身上。猪附红细胞体病是猪附红体附着在猪的血液中的红细胞表面或游离在血浆中引起贫血、黄疸、发热、呼吸困难和皮肤发红等症状。对于本病防治,重点在于综合性预防,饲料中添加四环素类广谱抗菌素,可有效预防本病。 相似文献
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《中国畜牧兽医文摘》2015,(12)
<正>猪附红细胞体病是由猪附红细胞体寄生于红细胞表面或血浆中而引起猪的一种急性、热性传染病~[1],临床上主要表现为贫血、发热、黄疸、消瘦、呼吸困难、虚弱、腹泻等症状~[2]。不同年龄、品种和性别的猪均可感染发病,给养猪业造成巨大的经济损失。1病原体1.1形态特征猪附红细胞体菌体较小,其形态多呈球形、卵圆形,少数呈顿号形、杆状,平均直径在0.2~2μm。光镜直接检查血液,红细胞呈橘黄色,附红细胞体附着于红细胞表面呈淡蓝色。在扫描电 相似文献
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猪附红细胞体病诊断方法研究进展 总被引：2，自引：1，他引：1
附红细胞体病(eperythrozoonsis)是由附红细胞体(eperythrozoon)感染动物机体后,寄生于宿主红细胞表面、血浆及骨髓等处引起的一种以发热、黄疸、贫血为主要临床特征的人畜共患传染病(Kreier等,1976).附红细胞体在<伯杰细菌鉴定手册>中列为立克次体目,无浆体科,附红细胞体属(Gwaltney等,1995).近几年对猪附红细胞体病原基因进行序列分析研究认为,猪附红细胞体应更名为猪嗜血性支原体或猪支原体. 相似文献
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正犬附红细胞体病是由附红细胞体引起的一种人畜共患病。以贫血、黄疸、发热等为主要临诊症状。1病原体附红细胞体具有多形性,大小为0.3~2.5μm,可呈环形、球形、卵圆形、短杆状、顿号形、亚铃状、网拍状和星形等多种形状,有折光性,一般附着于红细胞表面或成团寄生,呈链状、串珠状、鳞片状或丛状,常分布于红细胞局部边缘,有时将整个红细胞包围起来。本菌对苯胺色素着色良好,姬姆萨染色呈淡红或淡紫 相似文献
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刘利霞 《畜牧兽医科技信息》2013,(5):110-111
附红细胞体病简称附红体病,是由附红细胞体寄生于红细胞表面、血浆及骨髓所引起的人畜共患传染性疾病。犬附红细胞体病是由附红细胞体寄生于犬的血液、游离在血浆中或附着在红细胞表面所引起的一种血液寄生虫病。临床上以发热、贫血、黄疸、高烧等为主要特征,病死率高,严重危及犬的生命健康。本人治愈一例此病,现将治愈体会总结如下,以期为犬附红细胞体病的诊治提供参考。 相似文献
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Geraldus Gunawan Golda Rani Saragih Yusuf Umardani Srikanth Karnati Hevi Wihadmadyatami Dwi Liliek Kusindarta 《Anatomia, histologia, embryologia》2020,49(2):173-183
This study was carried on the tongues of ten normal, healthy and adult fruit bats (Rousettus amplexicaudatus, also known as the nyap biasa bat) in Yogyakarta, Java Island, Indonesia. The tongue was protrusible, elongated and flat with a rounded apex, and its width and thickness increased gradually towards to lingual root. There were two main types of lingual papillae, mechanical (filiform) and gustatory (fungiform and circumvallate). The tongue was divided into three parts (apex, corpus and radix), and then, each part was subdivided into three regions (two lateral regions and a median region). There were six subtypes of the filiform papillae—three types on the anterior part (small, scale-like and giant), one type on the middle part (leaf-like papillae) and two types on the posterior part (rosette-shaped filiform and conical filiform papillae)—in addition to transitional papillae presented on the corpus and radix. Two types of gustatory papillae were represented by a small number of fungiform papillae that are scattered among the filiform papillae on the lingual apex and corpus, while three circumvallate papillae on the posterior part are arranged in a “V” shape pointing directly at the larynx. 相似文献
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Gian Gartiwa Ulfah Damia Emilia Ika Megawati Stanislaus I. D. Pradipta Geraldus Gunawan Srikanth Karnati Hevi Wihadmadyatami Dwi Liliek Kusindarta 《Anatomia, histologia, embryologia》2021,50(5):801-811
The Horsfield's treeshrew (Tupaia javanica) is one of the shrews found on the island of Java that mainly feeds on fruits and occasionally insects. This shrew has an important role in the ecosystem as it spreads plant seeds and controls insects. To this day, there is no available knowledge about the structure of Horsfield's treeshrew's tongue. Therefore, the aim of this study was to provide data on the tongue structure of the Horsfield's treeshrew through two different methods. We investigated the tongue morphology and lingual papillae distribution of Tupaia javanica using 1) scanning electron microscopy (SEM) for microscopic structure and 2) histology for microscopic organization. Our macroscopic results revealed that the tongue of Tupaia javanica can be divided into three parts: apex, corpus and radix. The dorsal surface of the medial corpus is the median groove extending to the radix. Observation using SEM and light microscopy (LM) showed that the apex of the tongue bears three types of papillae: scale-like filiform, small filiform and fungiform. These are rosette filiform papillae, cornflower filiform papillae, conical papillae and fungiform papillae in the corpus. Meanwhile, the radix contains small filiform papillae, scale-like filiform papillae, vallate papillae, conical papillae and fungiform papillae. On the lateral posterior radix, Weber's gland reacts positively to PAS reaction. Taking together, our research shows that there are variations in the papillae on the tongue surface of Horsfield's treeshrew, and the variations of these papillae are very dependent on the pattern, type of food and the function of the tongue. 相似文献
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蜂蜜品质的花粉检验法研究 总被引：7，自引：0，他引：7
本试验提取15种蜂蜜中花粉粒,采用醋酸酐分解法处理,通过对不同蜜源花粉的形态特征及数量的显征检验,鉴定出蜂蜜的品种和纯度,并对操作要点进行了改良和量化.花粉检验法可用来判定蜂蜜的质量,是一种快速、有效的方法. 相似文献
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利用透射电镜和扫描电镜相结合的技术对黄艾美球虫（E.flavescens）人工感染后的子孢子移动过程及被虫体寄生的宿主细胞形态学变化和粘膜形态学变化进行了观察。子孢子在进入小肠腺上皮过程中需白细胞介导，在白细胞内可发育成球形的滋养体，观察到有两个子孢子侵入同一白细胞的现象，但分别存在于各自的带虫空泡中，黄艾美球虫引起的肠粘膜损伤主要发生于感染177小时之后，其损伤主要表现在绒毛大片脱落，结缔组织裸露，表面可见到大量破损的孔洞及大量肠杆菌，被虫体寄生的腺上皮细胞基部膨胀，微绒毛脱落，细胞核膨大并部分包被虫体，有些细胞核裂解为二。 相似文献
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将不同茧层的茧丝进行染色等处理后,可在显微镜下观察畸形茧丝（茧丝Ｌei节）,待充分干燥后,用树脱封固,即成永久标本。 相似文献
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The total number, distribution and size of the optic axons of the buffalo (Bos bubalis) were studied in five optic nerves using light and transmission electron microscopes. Semithin sections were cut at 0.40 μm with an ultramicrotome and stained with 0.3% toluidine blue for light microscopic analysis. The ultrathin sections were cut at 70 nm, mounted on copper mesh grids (No. 200) and stained with saturated solution of uranyl acetate dihydrate and examined with the transmission electron microscope. The optic axons were assessed in 10 regions of roughly equal area. The total number of optic fibers was estimated on semithin and ultrathin sections. The measurements of the axonal diameters were made on electron micrographs taken from various regions across the optic nerve. The mean value of the total number of optic axons calculated was 1 397 099 ± 10 995 and 1 584 255 by light and electron microscopes, respectively. There was very little difference in the density of the optic fibers between the 10 regions of the optic nerve. The optic nerve area ranged from 18.2 to 22.4 mm2 (mean, 21.3 mm2). The diameters of the optic axons ranged from 0.5 to 12.3 μm (mean, 3.3 μm). 相似文献
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对青藏高原高寒草甸嵩草属线叶嵩草（Ｋｏｂｒｅｓｉａ Ｃａｐｉｌｉｆｏｌｉａ）、高山嵩草（Ｋ．Ｐｇｙｍａｃａ）＇窄果嵩草（Ｋ．Ｓｔｅｎｏｃａｒｐａ）的果实进行了电镜扫描的初步观察研究。研究结果发现，嵩草属牧草具有保护组织机械性强，腔隙组织发达，胚包埋于胚乳之中等解剖学结构特征。这些特征使得嵩草属的牧草能适应高寒生态环境，同时也是形成这些种类的牧草发芽率极低的原因之一。 相似文献
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