共查询到20条相似文献，搜索用时 78 毫秒
1.
广西猪细小病毒与PRRSV、CSFV、PCV2、PRV混合感染的检测 总被引：7，自引：0，他引：7
应用PCR技术,对广西南宁、玉林、贵港、柳州、钦州和桂林6个市的10个规模化猪场送检的141份病猪组织样品进行猪细小病毒(PPV)的检测;同时,对鉴定为PPV阳性的样品进行了猪繁殖与呼吸综合征病毒(PRRSV)、猪瘟病毒(CS-FV)、猪圆环病毒2型(PCV2)和猪伪狂犬病毒(PRV)的检测,以确定猪群中PPV与其它病毒混和感染情况。结果,所有样品诸病毒的阳性检出率达17.73%(25/141);流产胎儿PPV阳性率为19.57%(9/46),繁殖障碍母猪扁桃体的PPV阳性率为17.74%(11/62),发病断奶仔猪组织病料的PPV阳性率为15.15%(5/33),PPV与PRRSV、CSFV、PCV2和/或PRV4种病毒均有混合感染现象,混合感染样品占PPV阳性样品的48.00%(12/25)。 相似文献
2.
猪繁殖与呼吸综合征病毒变异株与猪瘟病毒等混合感染的调查与分析 总被引：5，自引：0，他引：5
从华南地区PRRSV变异株(NSP21 594-1 680 bp缺失)核酸阳性的23个规模场、42个个体养殖场和15个散养户,随机采集发病、同群猪血清197份、组织样品115份,调查猪群个体感染PRRSV变异株情况,并对PRRSV变异株核酸阳性样品进行CSFV、PRV、PCV2、SIV检测,调查PRRSV变异株混合感染情况.结果表明:312份样品中224份PRRSV变异株核酸阳性,阳性率71.79%;PRRSV变异株核酸阳性样品中CSFV、PRV、PCV2核酸阳性样品分别为12份、2份,35份,阳性率分别为5.35%、0.89%、15.6%;80个场(群)均未检测到SIV核酸的存在.25个场(群)存在病毒混合感染,其中PRRSV变异株/CSFV、PRRSV变异株/PRV、PRRSV变异株/PCV2二重感染和PRRSV变异株/CSFV/PCV2、PRRSV变异株/PRV/PCV2三重感染猪场(群)百分率分别为5%、1.25%、21.25%和2.5%、1.25%.PRRSV变异株(NSP21594-1680变异)是造成猪场(群)重大损失的直接原因,并可与CSFV、PRV、PCV2等病毒出现混合感染,与PCV2混合感染比率较高. 相似文献
3.
猪流感病毒与繁殖与呼吸综合征病毒、猪瘟病毒、圆环病毒、伪狂犬病病毒、副猪嗜血杆菌混合感染的情况调查 总被引：3，自引：1，他引：2
应用套式PCR方法对采自广西境内13个市122个不同规模猪场及农村散养户的126份病料,进行了SIV的检测,并对鉴定为SIV阳性的15份病料,再分别进行PRRSV、CSFV、PCV-2、PRV、HPS的检测,以调查广西猪群中SIV与PRRSV、CSFV、PCV-2、PRV、HPS混合感染的情况。结果发现：猪群中SIV感染率为11.9%(15/126),而在所检测的15份阳性病料中,SIV混合感染十分严重,感染率为73.3%(11/15)。混合感染病毒种类最多达四重感染（SIV+PRRSV+CSFV+PCV-2）,占6.67%(1/15);三重感染(SIV+PRRSV+PCV 2、SIV+PRRSV+CSFV) 占40%(6/15);二重感染（SIV+PRRSV,SIV+PCV-2）占26.6%(4/15)。调查结果表明广西发病猪群中SIV与PRRSV、CSFV、PCV-2混合感染普遍存在。 相似文献
4.
为探明2016年广西猪群主要疫病的感染情况,从发病猪场和屠宰场共采集猪组织样品340份,应用RT-PCR方法检测猪瘟病毒（CSFV）?猪繁殖与呼吸综合征病毒（PRRSV）、猪流行性腹泻病毒（PEDV）,应用PCR方法检测猪圆环病毒2型（PCV2）和猪伪狂犬病病毒（PRV）?结果显示,发病猪场中的CSFV、PRRSV、PEDV、PCV2和PRV感染率分别为1.97%?16.45%?0.00%?34.21%和3.95%,而屠宰场猪的感染率分别为0.53%?11.17%?0.00%?43.09%和0.00%?对猪群的混合感染情况进行分析发现,PCV2和其它病原的混合感染率最高?其中,发病猪场二重感染率最高的为“CSFV+PCV2”,为3.95%;其次为“PRRSV+PCV2”,为3.29%?屠宰场二重感染率最高的是“PRRSV+PCV2”,为2.66%?结果表明：临床健康屠宰猪群和发病猪群中的PCV2和PRRSV感染率较高,其中PCV2感染率最高,且常与CSFV和PRRSV发生混合感染;PRV和CSFV主要在发病猪中被检出;加强PCV2和PRV的监控,对控制猪群发病具有重要意义;应通过加强生物安全措施来净化PRRSV和PRV? 相似文献
5.
《中国兽医杂志》2019,(6)
本试验针对当前对养猪业危害严重的猪瘟病毒(CSFV)、猪繁殖与呼吸综合征病毒(PRRSV)、猪圆环病毒2型(PCV2)、伪狂犬病病毒(PRV)和猪细小病毒(PPV),分别建立了检测CSFV和PRRSV的双重RT-PCR方法和检测PCV2、PRV及PPV的多重PCR方法。所建立的方法对CSFV、PRRSV、PCV2、PRV和PPV核酸的检出量分别为7.5 pg/μL、14.2 pg/μL、6.9 pg/μL、9.2 pg/μL和8.6 pg/μL。应用建立的方法分别对陕西省的陕南、陕北、关中等地区部分猪场采集的118份血清进行病毒检测。5种病毒的检出率分别是,CSFV为4.23%(5/118),PRRSV为22.01%(26/118),PCV2为15.25%(18/118),PRV为22.88%(27/118),从血清样品中未检测到PPV。本研究建立的检测RNA病毒双重RT-PCR和DNA病毒的多重PCR方法,为猪主要病毒其快速检测提供了可选择方法。 相似文献
6.
根据GenBank中已发表的猪圆环病毒2型(PCV2)、猪伪狂犬病毒(PRV)、猪细小病毒(PPV)有关基因序列,通过序列比对及参考相关文献,设计了3对特异性引物。通过优化,建立了可同时检测PCV2、PRV及PPV 3种病毒的多重PCR方法。结果表明,该方法能同时检测到PCV2、PRV及PPV的最低核酸量分别为40pg、72pg、46pg。对猪圆环病毒3型(PCV3)、猪细环病毒(TTSuV)、猪流行腹泻病毒(PEDV)、猪蓝耳病毒(PRRSV)、猪瘟病毒(CSFV)无扩增。应用该方法对87份临床样品进行检测,PCV2阳性检出率为28.7%(25/87),PRV野毒检出率为11.5%(10/87),PPV检出率为12.6%(11/87)。其中2种以上病毒混合感染阳性率为13.8%(12/87),3种病毒同时感染的阳性率为2.3%(2/87),其结果也与单一PCR结果一致。研究结果提示,该方法可用于PCV2、PRV、PPV三种病原的单一感染或混合感染的鉴别诊断。 相似文献
7.
笔者从乌鲁木齐市动物疾控中心门诊接诊的猪病病例中随机挑取了10份病料,根据畜主叙述的临床症状及病理剖解变化,采用实时荧光PCR方法对病料样品进行了猪蓝耳病病毒(PRRSV)、猪圆环病毒Ⅱ型(PCV2)、猪瘟病毒(CSFV)与猪细小病毒(PPV)的检测.结果显示,样品中PRRSV阳性率60%,PCV2阳性率80%,CSFV与PPV全为阴性,猪蓝耳病(PRRS)和猪Ⅱ型圆环病毒病(PCVD)混合感染率60%,本试验为乌鲁木齐市猪病的防控提供了科学依据. 相似文献
8.
多重PCR对猪病毒性繁殖障碍疾病的调查分析 总被引：3，自引：1，他引：2
为了解猪群中病毒性繁殖障碍疾病的流行状况,用多重PCR诊断方法,对太原市附近14个养猪场和门诊病例共1068份样品进行了猪繁殖与呼吸综合征病毒（PRRSV）、猪瘟病毒（CSFV）、猪细小病毒（PPV）、猪伪狂犬病病毒（PRV）、猪圆环病毒2型（PCV-2）的检测,其平均感染率分别为：PRRSV 32%、CSFV 40%、PPV 20%、PRV 12%、PCV-2 27%。其中混合感染2种病毒的猪群为39%,感染2种病毒的猪为24%。用RT-PCR试剂盒对山西省11个地市66个猪场及121个散养户的1572份血样进行了PRRSV和CSFV的检测,结果PRRSV感染率为33%,CSFV感染率为46%。用间接血凝试验对61个县38个乡136个村179户的1593份血样进行了猪瘟免疫抗体的检测,平均合格率为43.9%,从而为防控此类疫病的发生,制定综合防制措施提供试验数据。 相似文献
9.
安徽省北部地区猪高热病流行病学调查 总被引：4，自引：0，他引：4
2008年7月,安徽省北部地区生猪出现疫病,表现为不食、高热等特征,为查明病因,进行流行病学调查,同时采集发病猪群样品进行病原学和血清学检测。结果137份血清样品中,HPRRSV、PRRSV、PPV带毒率分别为25.5%、23.4%、37.9%;PRRSV、SIV(H1N1、H3N2)抗体阳性率分别为86.5%、9.49%和3.65%,仔猪CSFV抗体免疫合格率为50%;6份组织样品中HPRRSV、PRRSV、CSFV、PRV、PPV带毒率分别为50%、100%、66.7%、33.3%、33.3%。表明引起本次猪病为PRRSV、CSFV、PPV等多种病原体混合感染。 相似文献
10.
为探明2014年广西猪群主要疫病的感染情况,本研究从发病猪场和屠宰场采集猪组织样品共325份,应用RT-PCR方法检测猪瘟病毒(CSFV)、猪繁殖与呼吸综合征病毒(PRRSV)、猪流行性腹泻病毒(PEDV),并应用PCR方法检测猪圆环病毒2型(PCV2)和猪伪狂犬病病毒(PRV)。结果发现,发病猪场中,这5种病毒感染率分别为12.00%、28.57%、19.43%、53.71%和9.71%,而屠宰场的感染率分别为5.33%、2.67%、5.33%、59.33%和11.33%。对猪群混合感染情况分析发现,PCV2和其他病原的混合感染率最高。其中,发病猪场二重感染最高的为PRRSV+PCV2,达到11.43%,其次为PEDV+PCV2、CSFV+PCV2和PCV2+PRV,阳性率分别为5.71%、4.00%和4.00%;三重感染率最高的为PRRSV+PEDV+PCV2以及PRRSV+PCV2+PRV,阳性率均为2.29%。屠宰场二重感染最高的是PCV2+PRV,达到3.33%;三重感染最高的是CSFV+PCV2+PRV,阳性率为0.67%。结果表明,在发病猪场和屠宰场中,PCV2的感染率最高,且常与其他病原发生混合感染,PRV感染率呈上升趋势,加强对这2种病毒的监控对控制广西地区猪群发病具有重要意义。 相似文献
11.
12.
Breed differences for weight (CW), height (CH), and condition score (CS) were estimated from records (n = 12,188) of 2- to 6-yr-old cows (n = 744) from Cycle IV of the U.S. Meat Animal Research Center's Germplasm Evaluation (GPE) Program. Cows were produced from mating Angus and Hereford dams to Angus, Hereford, Charolais, Shorthorn, Galloway, Longhorn, Nellore, Piedmontese, and Salers sires. Samples of Angus and Hereford sires were 1) reference sires born from 1962 through 1970 and 2) 1980s sires born in 1980 through 1987. The mixed model included cow age, season of measurement and their interactions, year of birth, pregnancy-lactation code (PL), and breedgroup as fixed effects for CW and CS. Analyses of weight adjusted for condition score included CS as a linear covariate. The model for CH excluded PL. Random effects were additive genetic and permanent environmental effects associated with the cow. Differences among breed groups were significant (P < 0.05) for all traits and were maintained through maturity with few interchanges in ranking. The order of F1 cows for weight was as follows: Charolais (506 to 635 kg for different ages), Shorthorn and Salers, reciprocal Hereford-Angus (HA) with 1980s sires, Nellore, HA with reference sires, Galloway, Piedmontese, and Longhorn (412 to 525 kg for different ages). Order for height was as follows: Nellore (136 to 140 cm), Charolais, Shorthorn, Salers, HA with 1980s sires, Piedmontese, Longhorn, Galloway and HA with reference sires (126 to 128 cm). Hereford and Angus cows with reference sires were generally lighter than those with 1980s sires. In general, breed differences for height followed those for weight except that F1 Nellore cows were tallest, which may in part be due to Bos taurus-Bos indicus heterosis for size. 相似文献
13.
In experiment 1, 6 pregnant mares received a concentrate that contained a trace mineral premix that provided 14.3 mg Cu, 40 mg Zn, 28 mg Fe, 28 mg Mn, 0.08 mg Co, 0.16 mg I, and 0.16 mg Se/kg concentrate (group A). Seven mares received the same concentrate plus 502 mg Zn and 127 mg Cu once daily (group B). No differences (P > .05) in foal growth data, or Cu, Zn, and Fe concentrations of mare milk, mare serum, or foal serum were observed. In experiment 2, 6 pregnant mares received the same concentrate as group A (group C), and 8 mares received the same concentrate fortified with 4× the trace mineral premix (group D). Group C mares had higher serum Zn concentration at 1 day (P < 0.01) and 56 days (P < 0.04). Group C mares had higher milk Fe concentration at 28 days (P < .01), and group D mares had higher milk Cu concentration at 56 days (P < .01). Group C foals had higher serum Cu concentration at 14 days (P < .03). The results from this study provide no evidence to indicate that supplementing late gestating and lactating mares with higher dietary trace mineral levels than those recommended currently by NRC has any influence on foal growth and development, or on the Cu, Zn, and Fe concentrations of the mare milk, mare serum, or foal serum. 相似文献
14.
Nadine Pa?lack Barbara Mainzer Monika Lahrssen-Wiederholt Helmut Schafft Richard Palavinskas Angele Breithaupt Jürgen Zentek 《Journal of veterinary science (Suw?n-si, Korea)》2015,16(1):57-66
This study was conducted to measure the concentrations of strontium (Sr), barium (Ba), cadmium (Cd), copper (Cu), zinc (Zn), manganese (Mn), chromium (Cr), antimony (Sb), selenium (Se), and lead (Pb) in canine liver, renal cortex, and renal medulla, and the association of these concentrations with age, gender, and occurrence of chronic kidney disease (CKD). Tissues from 50 dogs were analyzed using inductively coupled plasma mass spectrometry. Cu, Zn, and Mn levels were highest in the liver followed by the renal cortex and renal medulla. The highest Sr, Cd, and Se concentrations were measured in the renal cortex while lower levels were found in the renal medulla and liver. Female dogs had higher tissue concentrations of Sr (liver and renal medulla), Cd (liver), Zn (liver and renal cortex), Cr (liver, renal cortex, and renal medulla), and Pb (liver) than male animals. Except for Mn and Sb, age-dependent variations were observed for all element concentrations in the canine tissues. Hepatic Cd and Cr concentrations were higher in dogs with CKD. In conclusion, the present results provide new knowledge about the storage of specific elements in canine liver and kidneys, and can be considered important reference data for diagnostic methods and further investigations. 相似文献
15.
《饲料工业》2019,(18):54-58
应用电感耦合等离子-质谱技术(ICP-MS),建立饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅等元素的测定方法。对饲料样品的前处理方法、仪器工作参数和11种元素标准曲线进行优化;并以加标回收、分析方法比对和重复测试说明方法的准确性和精密性。方法在0～1 000 ng/ml范围内线性良好,仪器检出限为0.557 7～5.072 ng/ml,具有良好的精密度,其回收率在88.1%～104.4%之间,相对标准偏差小于5.0%。同时与原子吸收和原子荧光方法进行比对,测定结果相近。所建立的方法简单、快速,可替代原子吸收和原子荧光方法测定饲料中的11种金属元素,为饲料的质量控制提供理想的元素分析方法。 相似文献
16.
17.
K Reifenberg M Stahl U L?sch 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1989,36(3):191-198
A simple two step procedure for the isolation of caprine, ovine, bovine, equine, canine, porcine and human peripheral blood granulocytes is described. After enrichment of granulocytes by centrifugation, contaminating erythrocytes are lysed hypotonically. Recovery, purity, and viability of the granulocyte suspensions are determined. FACScan analysis of the cell suspensions measuring cellular size by forward and sideward light scatter is compared with the corresponding analysis of whole blood leukocytes. Constituencies of the isolated cell suspensions and loss of granulocyte subpopulations through isolation procedure is discussed with regard to granulocyte function assays. 相似文献
18.
19.
《The Journal of small animal practice》1975,16(1-12):143-154
Circular excised skin wounds in the thoracic and metatarsal regions of the dog were studied. A similar sequence of events took place in the two regions although differences did occur due to the different reactions of the tissues which surrounded the wounds. None of the wound cavities became filled with exudate during the early stages of healing. In the thoracic wounds the cavities were largely filled by the swelling and inward movement of adipose tissue. Epithelium first grew on the wound surface in the sector of the wound that was situated in the direction of hair flow. The average time to complete epithelization was similar in both sets of wounds. A zone of alopecia developed around the wounds. 相似文献