一起奶牛梨形虫病的诊治

20 0 1年 8月 ,辽阳灯塔某奶牛场有多头奶牛发生以眼结膜黄染、浓茶色尿液和机体严重衰竭等为主要临床症状的疾病 ,故请笔者赴现场诊疗。经病史调查 ,临床检查 ,采样涂片镜检和用药治疗 ,初步诊断为奶牛血孢子虫病 ,学名为梨形虫病 ,或称巴贝斯虫病 ,过去也称为焦虫病。现将诊疗过程报告如下。1　发病情况该奶牛场共有奶牛 5 0头。据牧场工作人员反映 ,在 2周以前发现有 10多头奶牛精神沉郁 ,呼吸较快 ,喜卧地 ,不吃草 ,只饮水 ,泌乳减少 ,尿呈黄色 ,逐渐消瘦。有 6头奶牛在笔者赶到前已陆续死亡。还有近 2 0头表现出异常的临床症状 ,3头较…     

南阳市郊区奶牛焦虫病流行及防治调查

奶牛焦虫病是由孢子虫纲、梨形虫亚纲的巴贝斯科和泰勒科原虫寄生于血细胞内引起的疾病.本地主要是牛巴贝斯虫和双芽巴贝斯虫(俗称焦虫)感染牛发病.     

南阳市奶牛梨形虫病流行情况调查

本文报道南阳市 1 993年～ 2 0 0 3年间奶牛梨形虫病流行情况的调查结果     

奶牛巴贝斯虫病的诊断和治疗

牛巴贝斯虫病又叫焦虫病,由于首先在美国德克萨斯州发现,所以又称为德克萨斯热。牛巴贝斯虫病分布广,我国30多个省（市）、自治区都发现了此病。病原体属于梨形虫亚纲,对黄牛、水牛和奶牛都有易感性,主要临床特征是高热、贫血、黄疸、血红蛋白尿,发病严重的可引起死亡。本文通过对临沂市某奶牛场发生此病后的临床症状、诊断、治疗等方面进行报道,以增进人们对此病的认识。     

奶牛血孢子虫病诊治体会

牛的血孢子虫病又称为焦虫病 ,病原体是多种无色素血子虫焦虫。通常寄生于红细胞内 ,引起各种家畜的焦虫病。焦虫病的宿主特异性很强 ,各种动物有其一定的病原体 ,彼此互不感染。能引起牛的焦虫病的主要有双芽巴贝斯焦虫、巴贝斯焦虫、环形泰勒焦虫及瑟泰勒焦虫 ,而在我国东北地区则主要流行的是牛的环形泰勒焦虫病。下面就奶牛的环形泰勒焦虫病的发病过程及笔者诊治体会报告如下。1　发病情况2 0 0 0年 5月 ,一农户从黑龙江省 1次引入 6头黑白花奶牛 ,引入时牛体良好 ,且有 2头已产奶。到 7月中旬 ,有 1头牛突然精神不振 ,食欲减退 ,体温达…     

南阳市奶牛梨形虫病的流行病学调查与分析

奶牛梨形虫病是由蜱通过吸血而传播的一种血液原虫病。其临床特征为发热、贫血、黄疸、神经症状、淋巴结肿大等。近几年随着奶牛饲养量的增加和市场交易的频繁增加,梨形虫病的发病率、死亡率逐年上升,严重影响奶牛养殖业的发展,现已成为奶牛生产最严重的疾病之一。对该病进行流行病学调查、分析,查明流行原因和条件,找出流行规律,是采取有效防治措施的关键。为此我们从2001至2003年开展了此项研究,现将情况报道如下:1南阳市奶牛梨形虫病的流行病史南阳市20世纪50年代就有黄牛梨形虫病流行,当时称为“血尿病”、“胆胀”等。1984年奶牛梨形虫…     

甘肃省家畜梨形虫和梨形虫病概述

巴贝科(Babesiidae)和泰勒科(Theileriidae)的原虫统称为梨形虫，属顶复门(Apicomplexa)、梨形虫亚纲(Piroplasmasina)。由上述2个科的原虫所引起的疾病统称为梨形虫病。以前的分类将其隶属于孢子虫纲的血孢子虫目，故称其为血孢子虫和血孢子虫病，又称焦虫和焦虫病。梨形虫由蜱传播，有     

瓮安县引进牛焦虫病病例报告

焦虫病又称血孢子虫病,病原体是多种无色素血孢子虫,通常寄生在红细胞内,引起家畜发生焦虫病。本病不能接触感染,必须通过中间媒介蜱才能传播,具有明显的地区性和季节性,主要发生于北方各省,我州南部也有报道。从我县开展寄生虫普查的情况看,以前未发生过焦虫病。自2003年7月24日以来,我县首次发现焦虫病,呈散发性流行,经采取综合防治措施,有效地控制了本病的传播。现将具体情况报道如下。1流行情况2003年7月24日,我县映山红某养牛场2头西门塔尔种公牛先后发病,经对症治疗无效死亡。7月28日,梅花堰奶牛场1头奶牛死亡,通过实验室检验,确诊为…     

长沙地区奶牛场梨形虫病感染情况的调查

对长沙地区奶牛场进行抽样检查发现，所抽检的5个奶牛场梨形虫病的带虫率分别为63．41％、53．85％、35．14％、48．65％、40．00％，证实长沙地区奶牛场有梨形虫病的带虫，同时还认为该病的发生与产奶量、奶牛来源、平时防制有关。     

奶牛梨形虫病的诊治

2011年7月,独山县打羊乡奶牛养殖小区奶牛陆续出现以体温升高、贫血、黏膜苍白、黄疸、排血红蛋白尿等为主要特征的疾病。经县动物疫病预防控制中心确诊为奶牛梨形虫病,现将诊治情况介绍如下,供参考。     

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.