牛焦虫病的防治

正牛焦虫病主要有牛双芽焦虫病和牛巴氏贝斯焦虫病。牛双芽焦虫病又称牛双芽巴贝斯焦虫病,在热带、亚热带地区普遍存在。在我国,主要发生于南方各省。本病是一种急性发作的季节性疾病,以高热、贫血、黄疸和血红蛋白尿为主要特征。牛巴贝斯焦虫病也是一种世界性的血液原虫病,以急性型为多见,也有高热和血尿的临床症状,其致病机制和症状与牛双芽巴贝斯焦虫病相似。1病原体1.1双芽巴贝斯焦虫属于巴贝斯科巴贝斯     

牛羊焦虫病的中西医防治

牛羊焦虫病是由焦虫(血孢子虫或梨形虫)寄生在牛羊血细胞或血浆内,巴贝斯焦虫以虫体大量生长繁殖破坏血细胞、畜体严重贫血、发烧和排出血红蛋白尿为特征,而引起的血液原虫病。因通过硬蜱传播,故病多在硬蜱活跃季节呈爆发和流行。我县是牛羊焦虫病的易发地,本病曾对我县牛羊造成严重危害。经较长时间的流行病调查、诊治、化验,认为是巴贝斯焦虫和泰勒焦虫混合感染发病。1牛羊焦虫病发病史1.1病原常见的巴贝斯焦虫有双芽巴贝斯焦虫和牛巴贝斯焦虫。双芽巴贝斯焦虫是一种大型焦虫,典型的形似梨状,长度大于细胞半径,两个虫体以其尖端或锐角相连…     

输血疗法治疗奶牛焦虫病

奶牛焦虫病是奶牛巴贝斯焦虫、双形巴贝斯焦虫、环形泰勒焦虫寄生于牛红细胞内引起的血液原虫病,病原常表现为梨形、圆形、环形、杆形、月牙形、点状。巴贝斯焦虫和泰勒焦虫分别在牛的红细胞和网状内皮系统进行无性繁殖。蜱是中间宿主,     

马焦虫病的流行特点及防治措施

马焦虫病是由焦虫纲驽巴贝斯焦虫(亦称马焦虫)和马巴贝斯焦虫(亦称马纳塔焦虫)寄生于马的红细胞内而引起的一类原虫病。     

肉牛双芽巴贝斯焦虫病的防治

自2020年11月以来,本地一些大型肉牛场和部分肉牛养殖户的肉牛时常发生双芽巴贝斯焦虫病,该病的特点是双芽巴贝斯焦虫寄生于肉牛的红细胞内引起病牛以发热、厌食、贫血、黄疸和血红蛋白尿为特征的一种疾病。该病对四环素等抗菌药物不敏感。1病原肉牛双芽巴贝斯焦虫病的病原是双芽巴贝斯血焦虫,呈环状、椭圆形、梨形等形状,每个虫体有两个染色质块。     

马焦虫病的防治

马焦虫病是通过蜱来传播的马属动物的原虫病。病原体属于巴贝斯焦虫科贝斯属的马巴斯焦虫(又名纳塔焦虫)或驽巴贝斯焦虫又名马焦虫)。本病主要临床症状为高热、贫血、黄疸、溢血和呼吸困难等。马、驴、骡均可感染,夏秋季流行。对养马业危害甚大。     

27例水牛巴贝斯焦虫病诊疗的体会

水牛巴贝斯焦虫病的病原体主要的有牛巴贝斯焦虫和双芽巴贝斯焦虫(又称双芽焦虫)。这两种焦虫病在临床症状上大致相似。此病在急性期以体温升高、红色尿(血红蛋白尿)、贫血和黄疸为特征。农村很多人叫作“尿血病”,或“红尿病”。本病系经由蜱传播而引起的一种急性季节性疾     

犬巴贝斯虫病的流行与诊疗方案

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     

一例犬巴贝斯虫病的诊治

<正>犬巴贝斯虫病又称巴贝斯焦虫病,是由寄生于犬科动物的红细胞内的巴贝斯焦虫引起的一种蜱传性血液原虫病。临床表现以高热、厌食、严重贫血、黄疸、呼吸困难等症状。剖检个别死亡犬可见脾脏肿大易碎,肾脏有出血。慢性病例多表现为食欲时好时坏、严重贫血、消瘦。现将辽宁省兴城市某宠物医院一例犬巴贝斯焦虫诊治情况     

奶牛焦虫病的防治

奶牛焦虫病可分为牛双芽巴贝斯焦虫和牛巴贝斯焦虫病与牛环形泰勒焦虫病三种。奶牛和各品种的黄牛、肉牛、役牛等可被感染。     

癸氧喹酯干混悬剂含量测定的改进

采用高效液相色谱法测定癸氧喹酯干混悬剂的含量,在2-250μg/mL范围内,峰面积的常用对数与进样量浓度的常用对数呈良好的线性关系,R^2=1(n=5),平均回收率为99.24%~99.51%,RSD在0.05%~0.28%。此方法分析时间短,样品前处理简便、定量结果准确,重现性好,结果满意,为其质量控制提供了依据。     

商会自治的基石——商会自治规范研究

在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。     

猪毛色遗传的研究进展

本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。     

中华人民共和国农业部公告 第267号

为贯彻落实《兽药生产质量管理规范》(简称《兽药GMP》),进一步推动兽药GMP实施进程,我部制定了《兽药生产质量管理规范检查验收办法》,现予公告。本公告自2003年6月1日起施行。附件:兽药生产质量管理规范检查验收办法二○○三年四月十日第一章 总则 第一条 为推动《兽药生产质量管理规范》(以下简称兽药GMP)的实施,规范兽药GMP检查验收工作,制定本办法。 第二条 农业部负责全国兽药GMP管理和检查验收工作;负责制修订兽药GMP检查验收管理规定;负责兽药GMP检查员队伍建设和监督管理工作,负责国际兽药贸易中GMP互认工作。 …     

鸡败血支原体垂直传播模式及其阻断方法

以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。     

Comparison of 2 methods of centesis of the bursa of the biceps brachii tendon of horses

REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air.     

不同样本商品蜂蜜中硒含量的测定

用硝酸和高氯酸消化蜂蜜,使硒游离出来,在微酸性环境下,硒和2,3-二氨基萘(DAN)生成有较强荧光的物质,用环己烷萃取,在激发波长378nm,荧光波长518nm处测定其荧光强度。蜂蜜中硒含量范围:0.10～0.82μg/g。表明:蜂蜜应视为天然富硒营养品。     

乳酸杆菌益生作用机制的研究进展

乳酸杆菌作为益生菌广泛用于人和动物。本文综述了乳酸杆菌改善宿主健康的机制。乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道。文章重点讨论了乳酸杆菌表面成分（表面蛋白、脂磷壁酸和肽聚糖）与肠道受体（Ｃ型凝集素受体、Ｔｏｌｌ样受体和 Ｎｏｄ样受体）,阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制。     

Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF

Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo.