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应用Kappa检验比较猪蓝耳病ELISA抗体检测试剂盒 总被引：1，自引：0，他引：1
[目的]比较两个猪繁殖与呼吸综合征病毒（PRRSV）抗体酶联免疫吸附试验（ ELISA）检测试剂盒结果的一致性。[方法]对390份猪血清进行PRRSV抗体ELISA检测,应用Kappa检验比较两种试剂盒检测结果的一致性并进行分析。[结果]两种试剂盒联合检测出250份PRRSV抗体阳性和70份阴性,阳性一致性为80.65%,阴性一致性为87.50%,符合率82.1%,结果一致性为中度一致（ Kappa值=0.552）。[结论]2种方法检测结果一致性较好,建议根据实际需要选择PRRSV抗体检测试剂盒。 相似文献
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以鸡鸭红细胞作血凝抑制指示剂检测鸭高致病性禽流感抗体的比较 总被引：1，自引：0，他引：1
[目的]分别以鸡和鸭红细胞（RBCs）作指示剂,检测鸭体内高致病性禽流感病毒血凝抑制（HI）抗体结果的一致性。[方法] 在对360份鸭血清进行H5亚型高致病性禽流感病毒（Re-6株）HI抗体检测时,分别使用1%鸡红细胞悬液和1%鸭红细胞悬液做指示剂,观察结果,计算阳性率、阳性一致性、阴性一致性、符合率,并进行Kappa检验。 [结果] 1%鸭红细胞悬液作指示剂的阳性率（76.7%）显著高于鸡的（5.8%）,且有统计学意义（p<0.01）。两种方法共同检出13份抗体阳性和76份阴性,阳性一致性为61.9%（95%置信区间：41.1%–82.7%）,阴性一致性为22.4%（95%置信区间：18.0%–26.9%）,符合率24.7%（95%置信区间：20.3%–29.2%）,Kappa值为-0.023（95%置信区间：-0.051–0.004）。[结论] 2种红细胞作指示剂的检测结果阳性率有显著差异,结果一致性强度为极差。 相似文献
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比较两个弓形虫抗体检测试剂盒检测结果的一致性,为流行病学调查和临床诊断筛选可合理使用的商品化试剂盒。对510份猪血清分别进行弓形虫抗体IHA和ELISA检测,应用Kappa检验比较两种试剂盒检测结果的一致性并进行分析,用x~2检验分析差异性。两种试剂盒联合检出79份阳性,阳性符合率为67.52%,阴性符合率为95.17%,总符合率为88.82%。x~2检验差异显著(x~2=228.23,p=0.00);u检验值为15.89,两种产品的一致性为中度一致(Kappa值=0.66)。所以弓形虫病IHA检测试剂盒可作为现场收益流行病学调查,而弓形虫Ig G抗体ELISA检测试剂盒适合辅助临床检测和诊断。x~2检验比较两种试剂盒具有局限性。u检验排除偶然性造成的一致程度,与Kappa检验结合可比较一致性。弓形虫抗体检测要根据实况选择不同的试剂盒。 相似文献
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比较两种ELISA试剂盒检测结果的一致性,为流行病学调查和临床诊断筛选适合的商品化试剂盒。采用来自两个厂家的野毒抗体(gE)和免疫抗体(gB)ELISA检测试剂盒分别检测362份和392份猪血清,应用Kappa检验比较试验数据的一致性。结果显示:两种猪伪狂犬病抗体(g E)检测试剂盒联合检测出95份抗体阳性和256份阴性,符合率97.24%,结果一致性为极强(Kappa值0.932);两种猪伪狂犬病抗体(gB)检测试剂盒联合检测出351份抗体阳性和9份阴性,符合率91.84%,一致性为弱(Kappa值0.347)。以上结果说明,两种猪伪狂犬病抗体(gE)检测试剂盒都适用于PRV gE抗体检测,而两种猪伪狂犬病抗体(gB)检测试剂金差异较大,需慎重选择。 相似文献
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[目的]比较猪瘟病毒（CSFV）5种ELISA抗体检测试剂盒的使用效果。[方法]利用细胞中和试验制备的标准质控血清,制备不同猪瘟抗体效价的阳性血清70份和阴性血清20份,对5种试剂盒的敏感性、特异性和符合率进行比较。利用该5种试剂盒对不同年龄段猪群血清中猪瘟抗体水平进行检测。[结果] 5种试剂盒的敏感性为85.7%-100%,特异性均达到100%,符合率为88.9%-100%。不同年龄段猪血清样品中,5种试剂盒检测结果不尽相同。[结论]猪瘟抗体效价的高低对5种试剂盒检测结果的一致性有一定影响,尤其是针对弱阳性样品时,IDEXX猪瘟抗体试剂盒和荷兰赛迪公司的猪瘟抗体试剂盒检测效果相对较好,为猪瘟免疫检测工作提供了一定依据。 相似文献
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《中国兽医学报》2017,(1)
用660份牛血清比较牛口蹄疫病毒O型、A型抗体液相阻断ELISA检测试剂盒检测结果的一致性,并用u检验排除抽样误差的影响。结果表明:待检血清最终稀释度数为1∶64时O型试剂盒联合检出523份口蹄疫抗体阳性和102份阴性,符合率为94.70%,结果一致性为极强(Kappa值=0.82);待检血清最终稀释度数为1∶128时O型试剂盒联合检出476份口蹄疫抗体阳性和125份阴性,符合率91.06%,结果为高度一致(Kappa值=0.75);血清最终稀释度数为164时A型试剂盒联合检出498份口蹄疫抗体阳性和120份阴性,符合率为93.64%,结果一致性为极强(Kappa值=0.81),血清最终稀释度数为1∶28时A型试剂盒联合检出354份口蹄疫抗体阳性和233份阴性,符合率为88.94%,结果为高度一致(Kappa值=0.77)。在不同包被方式下,LBE试剂盒检测待检血清牛口蹄疫病毒抗体结果一致性较好。兽医实验室可应用一致性检验,结合本单位人力、财力和物力等条件,选择适宜的牛口蹄疫病毒抗体检测试剂盒。 相似文献
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IHA与ELISA检测猪瘟病毒抗体的比较 总被引：1，自引：1，他引：0
应用间接血凝试验(IHA)和酶联免疫吸附试验(ELISA)检测猪瘟病毒抗体,IHA试验以1∶16为判定孔,抗体效价大于或等于1∶16为抗体阳性;ELISA试验以抗体阻断率40%为判定标准,阻断率大于或等于40%为抗体阳性,同步检测了122份规模化猪场不同阶段免疫猪血清.结果ELISA检测抗体阳性率比IHA检测抗体阳性率低,阴性、阳性相符的血清数为92份,相关性为 75.4%,不同抗体水平分布的血清数也不同,个别血清出现较大差异,卡方检验P值为0.13(＞0.05),两种检测方法统计上无差异,研究结果为选择猪瘟病毒抗体检测方法提供参考. 相似文献
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为了寻找筛选猪瘟抗体阴性猪更简便的方法,本试验应用猪瘟中和试验(SN)、阻断ELISA和正向间接血凝(IHA)三种方法分别对170份未经猪瘟活疫苗免疫的仔猪血清进行猪瘟抗体检测。结果显示,SN、ELISA和IHA检测出的猪瘟阴性血清分别为144份、150份和131份,表明三种检测方法有较好的符合率,其中SN与ELISA的检测符合率为90.59%,SN与IHA的检测符合率为82.94%,而ELISA法与另两种方法比较阴性符合率最高。本结果表明,ELISA法具有较高的敏感性,适合应用于猪瘟活疫苗安全检验抗体阴性猪的筛选。 相似文献
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使用国产的4种猪口蹄疫病毒VP1结构蛋白抗体ELISA诊断试剂盒(VP1-ELISA)、猪口蹄疫O型液相阻断ELISA检测试剂盒(LB-ELISA)、猪口蹄疫正向间接血凝试剂盒、猪O型口蹄疫病毒ELISA抗体检测试剂盒(O-ELISA)同时检测猪口蹄疫O型合成肽疫苗免疫后的50份血清样品,阳性率分别为98.0%、94.0%、54.0%、90.0%。同时使用农业部规定的3种试剂盒分别检测20份血清样品的抗体滴度发现,VP1-ELISA试剂盒和LB-ELISA试剂盒阳性符合率为95%,平均抗体滴度相差0.7,与IHA试剂盒符合率为55%,平均抗体滴度相差3.8,故LB-ELISA试剂盒可以用来评价合成肽疫苗免疫的抗体,而IHA试剂盒不能用来检测合成肽疫苗免疫的抗体。 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
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。 相似文献
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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。 相似文献
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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. 相似文献
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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. 相似文献
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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. 相似文献
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Billinghurst RC Brama PA van Weeren PR Knowlton MS McIlwraith CW 《American journal of veterinary research》2004,65(2):143-150
OBJECTIVE: To determine whether serum concentrations of biomarkers of skeletal metabolism can, in conjunction with radiographic evaluation, indicate severity of osteochondrosis in developing horses. ANIMALS: 43 Dutch Warmblood foals with varying severity of osteochondrosis. PROCEDURE: 24 foals were monitored for 5 months and 19 foals were monitored for 11 months. Monthly radiographs of femoropatellar-femorotibial and tibio-tarsal joints were graded for osteochondral abnormalities. Serial blood samples were assayed for 8 cartilage and bone biomarkers. At the end of the monitoring period, foals were examined for macroscopic osteochondrosis lesions. RESULTS: Temporal relationships were evident between certain serum biomarkers and osteochondrosis severity in foals during their first year. Biomarkers of collagen degradation (collagenase-generated neoepitopes of type-II collagen fragments, type-I and -II collagen fragments [COL2-3/4C(short)], and cross-linked telopeptide fragments of type-I collagen) and bone mineralization (osteocalcin) were positive indicators of osteochondrosis severity at 5 months of age. In foals with lesions at 11 months of age, osteochondrosis severity correlated negatively with COL2-3/4C(short) and osteocalcin and positively with C-propeptide of type-II procollagen (CPII), a collagen synthesis marker. Radiographic grading of osteochondrosis lesions significantly correlated with macroscopic osteochondrosis severity score at both ages and was strongest when combined with osteocalcin at 5 months and CPII at 11 months. CONCLUSIONS AND CLINICAL RELEVANCE: The ability of serum biomarkers to indicate osteochondrosis severity appears to depend on stage of disease and is strengthened with radiography. In older foals with more permanent lesions, osteochondrosis severity is significantly related to biomarker concentrations of decreased bone formation and increased cartilage synthesis. 相似文献