Journal of Veterinary Diagnostic Investigation最新文献

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Aspergillosis in 41 wild bird species in the eastern United States: a 22-year retrospective review. 美国东部 41 种野生鸟类的曲霉菌病:22 年的回顾性研究。
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-03-01 Epub Date: 2025-01-27 DOI: 10.1177/10406387241313484
C Robert Stilz, Melanie R Kunkel, M Kevin Keel, Heather Fenton, Alisia A W Weyna, Kevin D Niedringhaus, Victoria A Andreasen, Amy S McKinney, Grazieli Maboni, Nicole M Nemeth
{"title":"Aspergillosis in 41 wild bird species in the eastern United States: a 22-year retrospective review.","authors":"C Robert Stilz, Melanie R Kunkel, M Kevin Keel, Heather Fenton, Alisia A W Weyna, Kevin D Niedringhaus, Victoria A Andreasen, Amy S McKinney, Grazieli Maboni, Nicole M Nemeth","doi":"10.1177/10406387241313484","DOIUrl":"10.1177/10406387241313484","url":null,"abstract":"<p><p>Aspergillosis is the most commonly and widely reported fungal infection in birds. Disease development is often secondary to stressors that cause immunocompromise, and it is typically regarded as a disease of captivity. We retrospectively evaluated data from 133 birds diagnosed with aspergillosis at the Southeastern Cooperative Wildlife Disease Study from 2001-2023 to assess diversity and relative frequency across avian taxa, gross and histologic lesion patterns, and comorbidities. Of 10 taxonomic orders represented, <i>Charadriiformes</i> (shorebirds; <i>n</i> = 35) and <i>Accipitriformes</i> (raptors; <i>n</i> = 32) were most common. Among them, the laughing gull (<i>Leucophaeus atricilla</i>; <i>n</i> = 20) and bald eagle (<i>Haliaeetus leucocephalus</i>; <i>n</i> = 14) were infected most commonly. Gross lesions were most frequent in lung (<i>n</i> = 80), air sac (<i>n</i> = 71), or celomic cavity lining (<i>n</i> = 42). Four distinct gross lesion patterns were identified: 1) tan caseous plaques (<i>n</i> = 106), 2) hollow masses lined with mold (<i>n</i> = 26), 3) red pulmonary nodules (<i>n</i> = 15), and 4) necrotic brown plaques (<i>n</i> = 3). Histologically, fungal hyphae were most common in lung (<i>n</i> = 107) and air sac (<i>n</i> = 49). Comorbidities were diagnosed in 67 birds with a spectrum of viral (<i>n</i> = 19), bacterial (<i>n</i> = 11), parasitic (<i>n</i> = 6), other fungal (<i>n</i> = 4), and non-infectious (<i>n</i> = 50) causes. Six birds each were diagnosed with highly pathogenic avian influenza or salmonellosis. Twenty-two birds were emaciated. Free-ranging birds are susceptible to myriad stressors that can predispose them to the development of aspergillosis.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"305-316"},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11773499/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143047228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of a semiquantitative scoring system for mild-to-moderate gill lesions in Atlantic salmon reared in recirculating aquaculture systems in Norway.
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-03-01 Epub Date: 2025-01-28 DOI: 10.1177/10406387241310900
Thomas Amlie, Alf Dalum, Marit Stormoen, Øystein Evensen
{"title":"Assessment of a semiquantitative scoring system for mild-to-moderate gill lesions in Atlantic salmon reared in recirculating aquaculture systems in Norway.","authors":"Thomas Amlie, Alf Dalum, Marit Stormoen, Øystein Evensen","doi":"10.1177/10406387241310900","DOIUrl":"10.1177/10406387241310900","url":null,"abstract":"<p><p>Compromised gill health is a critical cause of forfeited welfare in Atlantic salmon farming. Detecting and quantifying the early onset of gill disease is important to reveal initial inflicting stimuli. We collected gill samples of 45 Atlantic salmon from 2 commercial recirculating aquaculture systems (RASs) spanning fry-to-market-size fish with no clinical signs of gill disease. Gill samples were assessed histologically by 3 independent raters with different levels of experience. Semiquantitative scoring for 7 types of gill changes was carried out for 10 filaments per gill (450 filaments total) over 3 rounds on anonymized samples. Scores were summarized for each type of gill change. The assumed clinical relevance for each change was transformed into a category score, followed by an assessment of agreement within (intra) and between (inter) raters. A generalized linear model estimated the difference in score levels between raters. For each rater, intra-rater agreement was high for 6 gill changes and moderate for 1 gill change. Inter-rater agreement was moderate to almost-perfect, except for 2 gill changes; generalized linear model regression revealed systematic differences in score usage between the raters. Our scoring protocol worked satisfactorily for mucous cell amount, lamellar clubbing, lamellar hypertrophy and/or hyperplasia, and aneurysms, despite different levels of expertise in histologic evaluation. Intra-rater agreement was consistent, but differences existed for interlamellar hypercellularity, lamellar inflammation, and degeneration. Scoring subclinical gill changes is a challenge, and our scoring system for mild-to-moderate lesions may enable early intervention to limit the detrimental effects of poor gill health in RAS farming.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"252-262"},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11775946/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143059484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genetic characterization of diagnostic epitopes of cardiac troponin I in African rhinoceros. 非洲犀牛心肌肌钙蛋白I诊断表位的遗传特征。
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-03-01 Epub Date: 2024-12-26 DOI: 10.1177/10406387241305323
Yolandi Rautenbach, Sven D C Parsons, Angelika K Loots, Amelia Goddard, Leith C R Meyer, Peter E Buss, Emma H Hooijberg
{"title":"Genetic characterization of diagnostic epitopes of cardiac troponin I in African rhinoceros.","authors":"Yolandi Rautenbach, Sven D C Parsons, Angelika K Loots, Amelia Goddard, Leith C R Meyer, Peter E Buss, Emma H Hooijberg","doi":"10.1177/10406387241305323","DOIUrl":"10.1177/10406387241305323","url":null,"abstract":"<p><p>African rhinoceros undergo chemical immobilization and prolonged transport during translocations for conservation purposes and, hence, experience several pathophysiologic changes, including skeletal muscle injury. Potential concurrent myocardial injury has not been investigated due to a lack of validated immunoassays. We aimed to use inferred cardiac troponin I (cTnI) amino acid sequences of southern white (<i>Ceratotherium simum simum</i>) and southern-central black (<i>Diceros bicornis minor</i>) rhinoceros to assess the potential usefulness of several commercial cTnI immunoassays for detecting cTnI in African rhinoceros. We extracted RNA from the myocardium of deceased rhinoceros (2 white, 1 black rhinoceros) followed by primer design, cDNA synthesis via RT-PCR, and Sanger sequencing. The inferred cTnI amino acid sequences were obtained from the mRNA transcript sequences. The homology of epitope binding sites recognized by capture and detection antibodies in 6 human immunoassays was visually evaluated using aligned inferred rhinoceros cTnI amino acid sequences. Percentage identity between white and black rhinoceros cDNA nucleotide sequences was 99%; inferred amino acid sequences were identical. There were 5 amino acid differences between humans and rhinoceros in the epitope binding sites of immunoassay antibodies; 5 assays contained antibodies against epitopes that were not conserved. For one assay, the single capture antibody targeted a short heterologous epitope (residue 87-91), and cross-reactivity with rhinoceros cTnI was deemed unlikely. For the other 5 assays, complete antibody-epitope homology, or the inclusion of multiple detection or capture antibodies, or targeting of long epitopes, indicated that these assays could be suitable for further investigation of cTnI measurement in African rhinoceros.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"263-271"},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11672365/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142895784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to: Development of a reverse-transcription recombinase polymerase amplification assay with a lateral flow assay for rapid detection of avian orthoavulavirus.
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-03-01 Epub Date: 2025-02-09 DOI: 10.1177/10406387251316943
{"title":"Corrigendum to: Development of a reverse-transcription recombinase polymerase amplification assay with a lateral flow assay for rapid detection of avian orthoavulavirus.","authors":"","doi":"10.1177/10406387251316943","DOIUrl":"10.1177/10406387251316943","url":null,"abstract":"","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"404"},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11808689/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143382812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of the frequency and selected prevalence factors of equid alphaherpesvirus 4 viremia in horses with acute onset of fever and respiratory signs.
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-03-01 Epub Date: 2025-01-28 DOI: 10.1177/10406387241308080
Nicola Pusterla, Samantha Barnum, Kaila Lawton, Bryant Craig, Kaitlyn James
{"title":"Investigation of the frequency and selected prevalence factors of equid alphaherpesvirus 4 viremia in horses with acute onset of fever and respiratory signs.","authors":"Nicola Pusterla, Samantha Barnum, Kaila Lawton, Bryant Craig, Kaitlyn James","doi":"10.1177/10406387241308080","DOIUrl":"10.1177/10406387241308080","url":null,"abstract":"<p><p>Equid alphaherpesvirus 4 (EqAHV4; <i>Orthoherpesviridae</i>, <i>Varicellovirus equidalpha4</i>; equine rhinopneumonitis virus) has seldom been associated with complications such as abortion and myeloencephalopathy, given the low tendency of this virus to induce viremia. We investigated the frequency of EqAHV4 viremia in horses with fever and respiratory signs. Case selection included all equids with EqAHV4 quantitative real-time PCR (qPCR)-positive nasal secretions (defined as EqAHV4 qPCR-positive cases) submitted to a diagnostic laboratory. Controls consisted of each case submitted before and after each EqAHV4 qPCR-positive case. Purified nucleic acid from blood samples collected from EqAHV4 qPCR-positive horses and control cases was tested for EqAHV4 by qPCR. We selected 183 EqAHV4 qPCR-positive horses and 376 EqAHV4 qPCR-negative horses. In general, EqAHV4 qPCR-positive horses were younger, and had a lower rate of anorexia and a higher rate of nasal discharge compared to the EqAHV4 qPCR-negative horses. A total of 25 of 183 (13.7%) horses with EqAHV4 qPCR-positive nasal secretions tested qPCR-positive for EqAHV4 in blood. EqAHV4 viremic horses were significantly younger (<i>p</i> < 0.015 for group <1-y-old) and had a significantly higher occurrence of distal limb edema (<i>p</i> < 0.05) than EqAHV4 non-viremic horses. Our data support the observation that EqAHV4 viremia is rarely detected in EqAHV4-infected horses, which explains the low level of reported complications, such as abortion and myeloencephalopathy.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"349-353"},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11775911/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143059530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a SYBR Green-based RT-qPCR assay for the rapid detection of peste-des-petits-ruminants virus. 开发基于 SYBR Green 的 RT-qPCR 分析法,用于快速检测反刍兽疫病毒。
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-03-01 Epub Date: 2025-01-27 DOI: 10.1177/10406387241311514
Paravalappil Muraleedharan Arun, Ravindran Rajasekhar, Chintu Ravishankar, Hamza Palekkodan, Sumod Kanjirakkuzhiyil, Shashank Somasekhar
{"title":"Development of a SYBR Green-based RT-qPCR assay for the rapid detection of peste-des-petits-ruminants virus.","authors":"Paravalappil Muraleedharan Arun, Ravindran Rajasekhar, Chintu Ravishankar, Hamza Palekkodan, Sumod Kanjirakkuzhiyil, Shashank Somasekhar","doi":"10.1177/10406387241311514","DOIUrl":"10.1177/10406387241311514","url":null,"abstract":"<p><p>Peste-des-petits-ruminants (PPR) is primarily a disease of small ruminants caused by peste-des-petits-ruminants virus (PPRV; <i>Paramyxoviridae</i>, <i>Morbillivirus caprinae</i>), formerly the small ruminant morbillivirus. PPRV can cause significant morbidity and mortality in small ruminants and a significant economic impact. Conventional reverse-transcription PCR (RT-PCR), and probe-based and SYBR Green-based RT quantitative real-time PCR (RT-qPCR), are employed for the molecular detection of PPRV. Here we describe a SYBR Green-based RT-qPCR for rapid and sensitive detection of PPRV. We designed the specific primers from the conserved region of the fusion gene (<i>F</i>) of PPRV. The standard curve of the established RT-qPCR assay had a good linear relationship. The developed assay was also 3 log units more sensitive than the conventional RT-PCR, with a detection limit of 13.6 copies and an efficiency of 98.2%. There was no cross-reactivity with other caprine respiratory viruses, namely bluetongue virus, goatpox virus, and orf virus. The positive detection rate of clinical samples was 11 of 64 (17.2%) versus 10 of 64 (15.6%) by conventional RT-PCR. We confirmed our results by sequencing the full <i>F</i> and <i>N</i> genes of the isolates. Our SYBR Green RT-qPCR can be used as a fast, economical, and sensitive alternative to RT-PCR for the detection of PPRV.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"278-283"},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11773506/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143047150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mandibular ossifying fibroma in 2 cattle in Brazil.
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-03-01 Epub Date: 2025-01-27 DOI: 10.1177/10406387241313449
João P da S Cavasani, Ícaro G Dos Santos, Daniela M Garcia, Camilo E B Olaya, Adriele A de Queiroz, Pedro E B Néspoli, Marcos de A Souza, Edson M Colodel
{"title":"Mandibular ossifying fibroma in 2 cattle in Brazil.","authors":"João P da S Cavasani, Ícaro G Dos Santos, Daniela M Garcia, Camilo E B Olaya, Adriele A de Queiroz, Pedro E B Néspoli, Marcos de A Souza, Edson M Colodel","doi":"10.1177/10406387241313449","DOIUrl":"10.1177/10406387241313449","url":null,"abstract":"<p><p>Ossifying fibroma (OF) is a slow-growing, expansive, and benign fibro-osseous neoplasm that is rare in cattle. It mainly affects the craniofacial bones, especially the mandible. Here, we report 2 cases of mandibular OF in Nelore and mixed-breed steers with enlarged masses in the rostral portion of the mandible. Radiographic analysis of case 1 revealed an oval, lobed mass with the radiopacity of bone tissue that displaced the incisors laterodorsally. Histologically, both masses were composed of a proliferation of spindloid-to-stellate cells, supported by a dense fibrovascular stroma, with bony trabeculae surrounded by stroma and covered by a single layer of osteoblasts. Cellular pleomorphism was low, anisocytosis and anisokaryosis were negligible, and mitotic figures were not observed. The clinical, radiologic, gross, and histologic changes are compatible with OF. The primary differential diagnoses of OF are fibrous dysplasia and osteoma; their differentiation can be difficult. Fibroma, low-grade osteosarcoma, and multilobular sarcoma of bone are also differential diagnoses, with striking features that facilitate their exclusion.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"367-370"},"PeriodicalIF":1.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11773502/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143047212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bovine abortions due to the rare Salmonella serovars Kingston and Kedougou.
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-02-28 DOI: 10.1177/10406387251324261
Laurie Boucher, Pierre Hélie, Julie-Hélène Fairbrother, Sonia Chénier, Samuel Morin, Guillaume St-Jean
{"title":"Bovine abortions due to the rare <i>Salmonella</i> serovars Kingston and Kedougou.","authors":"Laurie Boucher, Pierre Hélie, Julie-Hélène Fairbrother, Sonia Chénier, Samuel Morin, Guillaume St-Jean","doi":"10.1177/10406387251324261","DOIUrl":"10.1177/10406387251324261","url":null,"abstract":"<p><p>Two aborted bovine fetuses were submitted (6 mo apart) with portions of their chorioallantois for postmortem examination. In both cases, microscopic examination revealed large numbers of gram-negative bacilli in the chorionic vessels and, to a lesser extent, in capillaries and venules of fetal organs of one fetus; the bacteria were not associated with noticeable inflammation or necrosis. <i>Salmonella enterica</i> subsp. <i>enterica</i> serovar Kingston was isolated from the placenta, abomasal contents, lung, and liver in case 1; <i>Salmonella</i> serovar Kedougou was isolated from the abomasal contents, lung, and liver in case 2. Both are rare serovars that have been isolated from various species but are not known to cause clinical disease in cattle, and, to our knowledge, have not been reported as the cause of abortion in dairy cattle.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"10406387251324261"},"PeriodicalIF":1.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11873301/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143531611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laboratory assessment of recovery of porcine circovirus 2 and porcine reproductive and respiratory syndrome virus using 2 commercial hollow-fiber ultrafilters. 使用两种商用中空纤维超滤器回收猪圆环病毒 2 和猪繁殖与呼吸综合征病毒的实验室评估。
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-02-28 DOI: 10.1177/10406387251322506
Aaron D Firnstahl, Gabrielle E Doughan, Sarah A Opelt, Rachel M Cook, Joseph A Heffron, Karen M Krueger, Mark A Borchardt, Locke A Karriker, Joel P Stokdyk, Tucker R Burch
{"title":"Laboratory assessment of recovery of porcine circovirus 2 and porcine reproductive and respiratory syndrome virus using 2 commercial hollow-fiber ultrafilters.","authors":"Aaron D Firnstahl, Gabrielle E Doughan, Sarah A Opelt, Rachel M Cook, Joseph A Heffron, Karen M Krueger, Mark A Borchardt, Locke A Karriker, Joel P Stokdyk, Tucker R Burch","doi":"10.1177/10406387251322506","DOIUrl":"10.1177/10406387251322506","url":null,"abstract":"<p><p>Groundwater near swine farms is an uninvestigated reservoir for porcine reproductive and respiratory syndrome virus (PRRSV) and porcine circoviruses (PCVs). Enteric microorganisms are often collected from groundwater via dead-end ultrafiltration, but recovery of PRRSV and PCV with this method has not been assessed. We recovered PRRSV2 and PCV2 by dead-end ultrafiltration followed by polyethylene glycol (PEG) precipitation, nucleic acid extraction, and reverse-transcription quantitative real-time PCR. We also compared 2 commercial hemodialysis ultrafilters (Asahi Kasei Rexeed-25A, Nipro Elisio-25H) and compared PRRSV2 recovery in these filters to other waterborne microorganisms. On average, 8 ± 1% of PRRSV2 was recovered by dead-end ultrafiltration and PEG precipitation, compared to 25 ± 6% for adenovirus 41. Full-process recovery of bacteria in the same filters was 5-15%; <i>Cryptosporidium parvum</i> recovery was 42 ± 12%. PCV2 was detected in 4 of 12 replicate filters, but low stock concentrations precluded quantitative recovery estimates. Elisio-25H ultrafilters performed similarly to Rexeed-25A filters for all organisms tested and is an effective replacement for the Rexeed-25A, which is no longer available in the United States. Our recovery of PRRSV2 and PCV2 by dead-end ultrafiltration in the laboratory suggests that PRRSV2 detection limits are as low as 3-50 genomic copies/L in sample volumes of 100-1,500 L. Based on quantitative microbial risk assessment, these concentrations are relevant to PRRSV2 infection rates in the U.S. swine herd.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"10406387251322506"},"PeriodicalIF":1.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11871577/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143531634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cecal transection with transanal evisceration in a goat.
IF 1.2 3区 农林科学
Journal of Veterinary Diagnostic Investigation Pub Date : 2025-02-28 DOI: 10.1177/10406387251324514
Kristen L Shekelle, Fausto Bellezzo, Mark J Trautmann, Laura K Bryan
{"title":"Cecal transection with transanal evisceration in a goat.","authors":"Kristen L Shekelle, Fausto Bellezzo, Mark J Trautmann, Laura K Bryan","doi":"10.1177/10406387251324514","DOIUrl":"10.1177/10406387251324514","url":null,"abstract":"<p><p>A 16-mo-old, pregnant, Nigerian Dwarf doe was presented to the veterinary hospital after being struck by a farm truck. A piece of tissue was found on the ground next to the goat after impact. The doe was painful on abdominal and perineal palpation, but abdominal radiographs and ultrasound did not reveal fractures or soft tissue herniations. The accompanying piece of tissue was a blind-ended sac covered with fecal material, most suggestive of the cecal apex. The goat declined to lateral recumbency, and due to the poor prognosis, the owners elected euthanasia. Postmortem examination identified free feces throughout the abdominal cavity, a complete, circumferential laceration through the mid-body of the cecum with an absent apex, and a full-thickness rectal tear at the anal orifice. Histologic examination of the accompanying piece of tissue was confirmatory of the cecal apex, and the anorectal tear had acute hemorrhage most consistent with trauma. Our report highlights the unique case presentation of traumatic cecal transection with transanal evisceration through an anorectal tear, a combination of injuries not previously reported in people or animals, to our knowledge. Pregnancy is a predisposing factor to rectal injuries in humans and veterinary species.</p>","PeriodicalId":17579,"journal":{"name":"Journal of Veterinary Diagnostic Investigation","volume":" ","pages":"10406387251324514"},"PeriodicalIF":1.2,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11871571/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143531630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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