1
|
Enteric listeriosis in ewes grazing stubble. Vet Rec 2024; 194:222-224. [PMID: 38488587 DOI: 10.1002/vetr.4067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
|
2
|
Belete W, Mekuria S. Prevalence, Species Identification, and Associated Risk Factor Ixodid Tick Infestation of Cattle in Selamago District Southern Ethiopia. ENVIRONMENTAL HEALTH INSIGHTS 2023; 17:11786302231211076. [PMID: 38021103 PMCID: PMC10655643 DOI: 10.1177/11786302231211076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023]
Abstract
Background Ticks are blood-sucking external parasites of livestock and humans; and can transmit pathogens beyond their direct effect during biting. Ticks are distributed in different agro-ecological zones. The study's objectives were to determine the species of ixodid ticks, estimate prevalence, and link the presumptive risk variables. Material and methods A cross-sectional study was conducted from November 2022 to June 2023 in Selamago district, Southern Ethiopia. A total of 384 cattle managed under extensive grazing systems were selected proportionally based on cattle population, from 3 kebeles, which is the lowest administrative structure of government, and individual animals were selected using systematic random sampling techniques at an interval of 5 animals; as the results, 153, 128, and 103 cattle were selected from Hana, Marsiyo, and Geyo kebeles, respectively. Results 262 animals (68.2%) were found to be infested with one or more tick species. In this study, there was a statistically significant difference in prevalence between sexes and age groups (P < .05). A higher prevalence was recorded in female and adult cattle than respective group. A total of 579 ticks were collected; 4 genera and 7 tick species were identified. As a result, Ambylomma variegatum, Amblyomma gemma, Amblyomma lepidum, Rhipicephalus (Boophilus) decoloratus, Rhipicephalus pulchellus, Rhipicephalus evertsi evertsi, and Hyalomma truncatum were observed. Among the species identified in the study area, Ambylomma variegatum was the most abundant tick (32.3%) and Hy. truncatum was the least prevalent (4.3%). Ticks on animals' body were recovered more dominantly around the perineum region, udder, scrotum, and dewlap, followed by the belly, head, and neck. Male ticks were more frequently encountered than females. Conclusion The finding shows a high tick infestation, and adult age groups were more affected and had a serious problem. Hence, prompt control measures are required to rescue the livelihood of the community and economic loss.
Collapse
Affiliation(s)
- Worku Belete
- Unit of Clinical Medicine and Epidemiology, Faculty of Veterinary Medicine, Hawassa University, Hawassa, Ethiopia
| | - Solomon Mekuria
- Unit of Clinical Medicine and Epidemiology, Faculty of Veterinary Medicine, Hawassa University, Hawassa, Ethiopia
| |
Collapse
|
3
|
Nasopulmonary mites (Acari: Halarachnidae) as potential vectors of bacterial pathogens, including Streptococcus phocae, in marine mammals. PLoS One 2022; 17:e0270009. [PMID: 35709209 PMCID: PMC9202935 DOI: 10.1371/journal.pone.0270009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 06/01/2022] [Indexed: 01/16/2023] Open
Abstract
Nasopulmonary mites (NPMs) of the family Halarachnidae are obligate endoparasites that colonize the respiratory tracts of mammals. NPMs damage surface epithelium resulting in mucosal irritation, respiratory illness, and secondary infection, yet the role of NPMs in facilitating pathogen invasion or dissemination between hosts remains unclear. Using 16S rRNA massively parallel amplicon sequencing of six hypervariable regions (or “16S profiling”), we characterized the bacterial community of NPMs from 4 southern sea otters (Enhydra lutris nereis). This data was paired with detection of a priority pathogen, Streptococcus phocae, from NPMs infesting 16 southern sea otters and 9 California sea lions (Zalophus californianus) using nested conventional polymerase chain reaction (nPCR). The bacteriome of assessed NPMs was dominated by Mycoplasmataceae and Vibrionaceae, but at least 16 organisms with pathogenic potential were detected as well. Importantly, S. phocae was detected in 37% of NPM by nPCR and was also detected by 16S profiling. Detection of multiple organisms with pathogenic potential in or on NPMs suggests they may act as mechanical vectors of bacterial infection for marine mammals.
Collapse
|
4
|
Komatsu T, Yoshida E, Shigenaga A, Yasuie N, Uchiyama S, Takamura Y, Sugie K, Kimura K, Haritani M, Shibahara T. Fatal suppurative meningoencephalitis caused by Klebsiella pneumoniae in two calves. J Vet Med Sci 2021; 83:1113-1119. [PMID: 34024871 PMCID: PMC8349807 DOI: 10.1292/jvms.21-0166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
One calf died (No. 1) and another was euthanized following astasia (No. 2). Histopathological examination revealed suppurative meningoencephalitis in these
calves. Klebsiella pneumoniae antigens were detected in lesions. Thymocytes were decreased in the thymus cortex in both cases. 16S rRNA gene
sequencing of the No. 1 isolate and bacterial extracts from formalin fixed paraffin embedded sections of No. 2 revealed that both samples were K.
pneumoniae. The No. 1 isolate showed multidrug resistance against penicillin antibiotics, fosfomycin, streptomycin, macrolide antibiotics,
tetracycline antibiotics, and clindamycin. Immunosuppression is a significant septicemic K. pneumoniae infection risk factor. Our study
provides new aspects regarding K. pneumoniae infections in cattle, bacterial meningoencephalitis differentiation, and K.
pneumoniae and bacterial meningoencephalitis treatments.
Collapse
Affiliation(s)
- Tetsuya Komatsu
- Aichi Prefectural Chuo Livestock Hygiene Service Center, 1-306 Jizono, Miaicho, Okazaki, Aichi 444-0805, Japan
| | - Erina Yoshida
- Miyazaki Prefectural Livestock Hygiene Service Center, 3151-1 Shimonaka, Sadowaracho, Miyazaki, Miyazaki 880-0212, Japan
| | - Ayumi Shigenaga
- Miyazaki Prefectural Livestock Hygiene Service Center, 3151-1 Shimonaka, Sadowaracho, Miyazaki, Miyazaki 880-0212, Japan
| | - Nozomi Yasuie
- Hinode Animal Clinic, 4-1 Owaki, Heijimacho, Yatomi, Aichi 498-0031, Japan
| | - Shintaro Uchiyama
- Aichi Prefectural Tobu Livestock Hygiene Service Center, 51-1 Konami, Nishimiyukicho, Toyohashi, Aichi 441-8113, Japan
| | - Yuji Takamura
- Aichi Prefectural Chuo Livestock Hygiene Service Center, 1-306 Jizono, Miaicho, Okazaki, Aichi 444-0805, Japan
| | - Kennosuke Sugie
- Aichi Prefectural Chuo Livestock Hygiene Service Center, 1-306 Jizono, Miaicho, Okazaki, Aichi 444-0805, Japan
| | - Kumiko Kimura
- Division of Pathology and Pathophysiology, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Makoto Haritani
- Department of Veterinary Medical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.,School of Veterinary Nursing and Technology, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonancho, Musashino, Tokyo 180-8602, Japan
| | - Tomoyuki Shibahara
- Division of Pathology and Pathophysiology, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan.,Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-Oraikita, Izumisano, Osaka 598-8531, Japan
| |
Collapse
|
5
|
Li F, Zhao W, Hong Q, Shao Q, Zhu J, Yang S. Mannheimia bovis sp. nov., Isolated from a Dead Cow with Hemorrhagic Pneumonia. Curr Microbiol 2021; 78:1692-1698. [PMID: 33638000 DOI: 10.1007/s00284-021-02384-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 02/05/2021] [Indexed: 10/22/2022]
Abstract
Strain ZY190616T was isolated from lung of a dead cow with hemorrhagic pneumonia in Yunnan Province, China. The strain was Gram-stain-negative, facultatively anaerobic bacterium. Phylogenetic analysis based on 16S rRNA gene sequence indicated that the strain was closely related to species of the genus Mannheimia and formed an independent clade with M.varigena CCUG 38462 T (97.0% similarity). Phylogenetic analysis based on recN gene indicated that the strain formed a clade with M.caviae CCUG 59995 T (87.8% similarity). Phylogenetic analysis based on rpoB gene indicated that the strain formed a clade with M.varigena CCUG 38462 T (94.7% similarity). The genomic OrthoANI values between strain ZY190616T and M. ovis, M.haemolytica and M.granulomatis were 84.5%, 82.7% and 81.9%, respectively. The genomic G + C content was 39.8 mol%. The predominant fatty acids (> 5%) of the strain were C16:0, C14:0, C18:1ω7c, summed feature 3 (C16:1 ω7c and/ or C16:1ω6c) and summed feature 2 (C14:0 3OH/ C16:1 Iso). The major polar lipids were phosphatidylglycerol (PG), phosphatidylethanolamine (PE), monophosphatidylglycerol (MGDG), triacylglycerol (TAG) and diphosphatidylglycerol (DLCL). The sole respiratory quinone was CoQ-7. Based on evidence from the taxonomic study, strain ZY190616T represents a novel species of the genus Mannheimia, for which the name Mannheimia bovis sp. nov. is proposed. The type strain is ZY190616T (= CCTCC AB 2020168 T = KCTC 25018 T).
Collapse
Affiliation(s)
- Fuxiang Li
- Yunnan Tropical and Subtropical Animal Virus Diseases Laboratory, Yunnan Animal Science and Veterinary Institute, Kunming, 650224, P. R. China
| | - Wenhua Zhao
- Yunnan Tropical and Subtropical Animal Virus Diseases Laboratory, Yunnan Animal Science and Veterinary Institute, Kunming, 650224, P. R. China
| | - Qionghua Hong
- Yunnan Provincial Meat Caprine Engineering Research Center, Yunnan Animal Science and Veterinary Institute, Kunming, 650224, P. R. China
| | - Qingyong Shao
- Yunnan Provincial Meat Caprine Engineering Research Center, Yunnan Animal Science and Veterinary Institute, Kunming, 650224, P. R. China
| | - Jianbo Zhu
- Yunnan Tropical and Subtropical Animal Virus Diseases Laboratory, Yunnan Animal Science and Veterinary Institute, Kunming, 650224, P. R. China
| | - Shibiao Yang
- Yunnan Tropical and Subtropical Animal Virus Diseases Laboratory, Yunnan Animal Science and Veterinary Institute, Kunming, 650224, P. R. China.
| |
Collapse
|
6
|
Mannheimia ovis sp. nov., Isolated from Dead Sheep with Hemorrhagic Pneumonia. Curr Microbiol 2020; 77:3504-3511. [PMID: 32951094 DOI: 10.1007/s00284-020-02209-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/09/2020] [Indexed: 10/23/2022]
Abstract
Two Gram-stain-negative, facultatively anaerobic bacteria, designated ZY170218T and ZY180512, were isolated from lungs of dead sheep with hemorrhagic pneumonia in Yunnan Province, China and their taxonomic positions were studied by a polyphasic approach. The two isolates grew optimally at 37 °C, pH 9.0 and 1.0% NaCl (w/v), and showed identical 16S rRNA, recN and rpoB gene sequences. Phylogenetic analysis based on 16S rRNA gene sequence showed that the two strains fell within the cluster of species in the genus Mannheimia and formed a separated lineage with comparatively low similarity to the closest related species M. granulomatis (96.5%). Phylogenetic analysis based on rpoB gene indicated that the strains formed a monophyletic evolutionary lineage, with low sequence similarity ≤ 89.0% to the species of the genus Mannheimia. The genomic OrthoANI values between strain ZY170218T and M. granulomatis and M. haemolytica were 80.4% and 83.1%, respectively. The genomic G + C content of strain ZY170218T was 39.1 mol%. The predominant fatty acids (> 5%) of the two strains were C16:0, C14:0, C18:1ω7c, summed feature 3 (C16:1 ω7c and/ or C16:1ω6c) and summed feature 2 (C14:0 3OH/ C16:1 Iso). The major polar lipids of strain ZY170218T were phosphatidylglycerol, phosphatidylcholine, monogalactosyldiacylglycerol, bis(monoacylglycero)phosphate and diacylglycerols. The sole respiratory quinone of the two strains was CoQ-7. On the basis of phylogenetic, phenotypic and chemotaxonomic features, strain ZY170218T and ZY180512 clearly represents a novel species of the genus Mannheimia, for which the name Mannheimia ovis sp. nov. is proposed. The type strain is ZY170218T (= CGMCC 1.13620 T = KCTC 15731 T).
Collapse
|
7
|
Komatsu T, Inaba N, Watando E, Sugie K, Kimura K, Katsuda K, Shibahara T. Pyelonephritis caused by Mannheimia varigena in a Holstein calf. J Vet Med Sci 2019; 81:1113-1116. [PMID: 31257235 PMCID: PMC6715917 DOI: 10.1292/jvms.19-0211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
A 7-day-old calf died following development of mild respiratory symptoms. Postmortem
examination revealed the kidneys were inflamed, and Gram-negative bacteria was detected in
the kidneys, supporting the diagnosis of suppurative pyelonephritis. Mannheimia
varigena antigen was found in the lesions and the cytoplasm of macrophages and
neutrophils in the renal cortex. The Gram-negative bacilli from the kidney were identified
as M. varigena by sequencing the 16S rDNA. Although M.
varigena is known to cause bovine respiratory disease syndrome, shipping fever,
and meningitis, it was unknown that it could also cause suppurative pyelonephritis. Our
study provides the first evidence of suppurative pyelonephritis caused by M.
varigena in cattle and information that would improve our understanding,
diagnosis, and treatment for M. varigena infections.
Collapse
Affiliation(s)
- Tetsuya Komatsu
- Aichi Prefectural Chuo Livestock Hygiene Service Center, 1-306 Jizono, Miaicho, Okazaki, Aichi 444-0805, Japan
| | - Nanami Inaba
- Aichi Prefectural Chuo Livestock Hygiene Service Center, 1-306 Jizono, Miaicho, Okazaki, Aichi 444-0805, Japan
| | - Eri Watando
- Aichi Prefectural Chuo Livestock Hygiene Service Center, 1-306 Jizono, Miaicho, Okazaki, Aichi 444-0805, Japan
| | - Kennosuke Sugie
- Aichi Prefectural Chuo Livestock Hygiene Service Center, 1-306 Jizono, Miaicho, Okazaki, Aichi 444-0805, Japan
| | - Kumiko Kimura
- Division of Pathology and Pathophysiology, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Ken Katsuda
- Division of Bacterial and Parasitic Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Tomoyuki Shibahara
- Division of Pathology and Pathophysiology, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan.,Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531, Japan
| |
Collapse
|
8
|
The culture-dependent and culture-independent analysis for determination of bacterial diversity within Limnatis nilotica (Clitellata: Hirudinea). Biologia (Bratisl) 2019. [DOI: 10.2478/s11756-019-00194-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
9
|
Complete Genome Sequence of Mannheimia varigena Isolated from Bovine Milk. Microbiol Resour Announc 2019; 8:MRA01377-18. [PMID: 30834366 PMCID: PMC6386567 DOI: 10.1128/mra.01377-18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 01/22/2019] [Indexed: 12/03/2022] Open
Abstract
Mannheimia varigena is a pathogen of cattle that has been isolated from diseased lung and udder. There are currently complete genome sequences for 4 M. varigena isolates, all from lungs of cattle in the United States. Mannheimia varigena is a pathogen of cattle that has been isolated from diseased lung and udder. There are currently complete genome sequences for 4 M. varigena isolates, all from lungs of cattle in the United States. We report a complete genome sequence of M. varigena isolated from bovine milk in Ireland.
Collapse
|
10
|
Konradt G, Bassuino DM, Prates KS, Bianchi MV, Snel GG, Sonne L, Driemeier D, Pavarini SP. Suppurative infectious diseases of the central nervous system in domestic ruminants. PESQUISA VETERINÁRIA BRASILEIRA 2017. [DOI: 10.1590/s0100-736x2017000800007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT: This study describes suppurative infectious diseases of the central nervous system (CNS) in domestic ruminants of southern Brazil. Reports from 3.274 cattle, 596 sheep and 391 goats were reviewed, of which 219 cattle, 21 sheep and 7 goats were diagnosed with central nervous system inflammatory diseases. Suppurative infectious diseases of the CNS corresponded to 54 cases (28 cattle, 19 sheep and 7 goats). The conditions observed consisted of listerial meningoencephalitis (8 sheep, 5 goats and 4 cattle), suppurative leptomeningitis and meningoencephalitis (14 cattle, 2 goats and 1 sheep), cerebral (6 cattle and 2 sheep), and spinal cord (7 sheep) abscesses, and basilar empyema (4 cattle and 1 sheep). Bacterial culture identified Listeria monocytogenes (9/54 cases), Escherichia coli (7/54 cases), Trueperella pyogenes (6/54 cases) and Proteus mirabilis (1/54 cases). All cases diagnosed as listeriosis through histopathology yielded positive immunostaining on immunohistochemistry, while 12/17 of the cases of suppurative leptomeningitis and meningoencephalitis presented positive immunostaining for Escherichia coli. Meningoencephalitis by L. monocytogenes was the main neurological disease in sheep and goats, followed by spinal cord abscesses in sheep. In cattle, leptomeningitis and suppurative meningoencephalitis was the most frequent neurological disease for the species, and E. coli was the main cause of these lesions. Basilar empyema, mainly diagnosed in cattle, is related to traumatic injuries, mainly in the nasal cavity, and the main etiologic agent was T. pyogenes.
Collapse
|
11
|
Suástegui-Urquijo Z, Jaramillo-Arango CJ, Martínez-Hernández F, Ureta E, Trigo-Tavera F, Suárez-Güemes F, Xicohtencatl-Cortes J, Hernández-Castro R. Identification and phylogenetic relationship of Mannheimia varigena using the 16S rRNA subunit and the rpoB gene. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-1017-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
|
12
|
Britton AP, Zabek EN. Bronchopneumonia in two dairy calves associated with Mannheimia species cluster V infection. J Vet Diagn Invest 2012; 24:1043-6. [PMID: 22956485 DOI: 10.1177/1040638712457930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The pathological, bacteriological, and molecular findings of two 3-week-old Holstein calves with bronchopneumonia are presented. Heavy pure growth of a Mannheimia species most closely aligned with the unnamed cluster V strains on the basis of 16S ribosomal RNA sequencing was detected in the lungs of both calves in association with Bovine respiratory syncytial virus infection. While Mannheimia species closely related to cluster V strains have occasionally been reported in association with pneumonia, meningitis, and abortion in cattle, the current report provides a description of the gross and histopathological lesions produced by a cluster V strain of Mannheimia species. Lesions in the lung were found to be typical of those described for Mannheimia haemolytica with the absence of areas of coagulation necrosis rimmed by leukocytes and more pronounced intra-alveolar hemorrhage. Lesions were linked to the presence of leukotoxin A based on phenotypic hemolysis and molecular demonstration of the leukotoxin A gene.
Collapse
Affiliation(s)
- Ann P Britton
- Animal Health Centre, BC Ministry of Agriculture, Abbotsford, British Columbia, Canada.
| | | |
Collapse
|
13
|
Santos TMA, Gilbert RO, Bicalho RC. Metagenomic analysis of the uterine bacterial microbiota in healthy and metritic postpartum dairy cows. J Dairy Sci 2011; 94:291-302. [PMID: 21183039 DOI: 10.3168/jds.2010-3668] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 09/19/2010] [Indexed: 12/24/2022]
Abstract
At present, many bacterial species are validly known as etiological agents of dairy cattle metritis, yet the vast uncultured fraction has received no attention so far. The purpose of this study was to use culture-independent methods to describe and compare the uterine bacterial composition in healthy and metritic postpartum Holstein dairy cows. Both group-specific 16S ribosomal DNA PCR-denaturing gradient gel electrophoresis (DGGE) and clone library sequencing of broad-range 16S ribosomal DNA PCR revealed differences in the bacterial communities comparing healthy and metritic cows. Bacterial diversity in healthy and metritic uteri was greater and more complex than described previously by traditional culture methods. Sequences were assigned to 5 major groups (Gammaproteobacteria, Firmicutes, Fusobacteria, Bacteroidetes, and Tenericutes) and to uncultured bacteria. Additionally, DGGE suggested the presence of Actinobacteria. Most clone sequences in the metritic status libraries were affiliated with the phylum Fusobacteria. Many components, especially from other phyla, have not previously been isolated from cases of metritis. In the clone libraries from the healthy status dairy cows, Gammaproteobacteria was the most prominent group and most sequences showed high identity with Mannheimia varigena, Pasteurella hemolytica, and members of the phylum Tenericutes. Our data showed that the uterine bacterial community in postpartum dairy cows differed considerably between healthy and metritic cows and described the occurrence of a previously unrecognized extent of this diversity in the bovine intrauterine microbiota.
Collapse
Affiliation(s)
- T M A Santos
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA
| | | | | |
Collapse
|
14
|
Catry B, Decostere A, Schwarz S, Kehrenberg C, de Kruif A, Haesebrouck F. Detection of tetracycline-resistant and susceptible pasteurellaceae in the nasopharynx of loose group-housed calves. Vet Res Commun 2007; 30:707-15. [PMID: 17004035 DOI: 10.1007/s11259-006-3347-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2005] [Indexed: 10/24/2022]
Abstract
The aim of the present study was to determine which Pasteurella and Mannheimia species are present in the upper respiratory tract of healthy calves with no history of antimicrobial treatment prior to sampling. The presence of subpopulations of tetracycline-resistant Pasteurellaceae was also investigated. Nasal swabs from 61 loose group-housed, clinically healthy calves, 1 to 4 months old, from 16 dairy herds were inoculated aerobically on a selective medium (Columbia agar with 5% ovine blood and 16 mg/L bacitracin) with or without 4 mg/L oxytetracycline (OTC). A total of 43 strains belonging to the family Pasteurellaceae were isolated from 38 calves (62.3%) out of 13 herds (81.3%). The predominant organisms were Pasteurella multocida subsp. multocida (57.4%), Mannheimia varigena (4.9%) and M. haemolytica (3.2%). Growth of Pasteurellaceae on the OTC-containing medium was seen only with samples from two herds (6 animals; 9.8%), and on only one farm this proved to be an OTC-resistant subpopulation. Minimum inhibitory concentration (MIC) determinations by means of agar dilution confirmed a low prevalence of OTC-resistant Pasteurellaceae, with overall MIC(50) and MIC(90) values of 0.25 and 32 mg/L, respectively. These data do not support the hypothesis that the relative high frequency of tetracycline-resistant P. multocida isolates from fatal cases of bovine respiratory disease is related to the presence of minor tetracycline-resistance subpopulations within this species.
Collapse
Affiliation(s)
- B Catry
- Department of Reproduction, Obstetrics and Herd Health, Ghent University, Merelbeke, Belgium.
| | | | | | | | | | | |
Collapse
|
15
|
Catry B, Haesebrouck F, Vliegher SD, Feyen B, Vanrobaeys M, Opsomer G, Schwarz S, Kruif AD. Variability in acquired resistance of Pasteurella and Mannheimia isolates from the nasopharynx of calves, with particular reference to different herd types. Microb Drug Resist 2006; 11:387-94. [PMID: 16359200 DOI: 10.1089/mdr.2005.11.387] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
To measure the level of antimicrobial resistance in potential bovine respiratory pathogens at different production types, nasal swabs were collected from 57 calves of 13 dairy herds, 150 calves of 9 beef cattle herds, and 289 calves of 5 high-density veal calf herds and investigated for the presence of Pasteurellaceae. All calves were less than 6 months old. Susceptibilities of the Pasteurella and Mannheimia isolates to eight antimicrobials were determined using an agar dilution method. P. multocida (37.3%) and hemolytic Mannheimia organisms (M. haemolytica sensu lato) (6.3%) were the most frequently detected organisms. The overall prevalence of isolates resistant to at least one antimicrobial from the dairy, beef, and veal calves were 17.6% (6/34), 21.9% (14/64), and 71.9% (64/89), respectively. In isolates obtained on the veal calf herds, acquired resistance to ampicillin, oxytetracycline, potentiated sulfonamides, gentamicin, tilmicosin, and enrofloxacin was frequently present, and 32.6% of these isolates were resistant to more than two of the tested antimicrobials. Resistance to ceftiofur and florfenicol was not detected. A substantial within-herd variability of species diversity and resistance profiles among isolates belonging to the genera Pasteurella and Mannheimia was found among the isolates of the veal calf farms.
Collapse
Affiliation(s)
- Boudewijn Catry
- Department of Reproduction, Obstetrics and Herd Health, Ghent University, Belgium.
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Catry B, Chiers K, Schwarz S, Kehrenberg C, Decostere A, de Kruif A. Fatal peritonitis caused by Pasteurella multocida capsular type F in calves. J Clin Microbiol 2005; 43:1480-3. [PMID: 15750141 PMCID: PMC1081243 DOI: 10.1128/jcm.43.3.1480-1483.2005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A fatal case of atypical septicemia of pasteurellosis in veal calves is described. The causative organism was identified as a multiresistant Pasteurella multocida capsular type F isolate. The outbreak was characterized by fibrinous peritonitis and mortality, which are hitherto unreported features of P. multocida capsular type F infections.
Collapse
Affiliation(s)
- Boudewijn Catry
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, BE-9820 Merelbeke, Belgium.
| | | | | | | | | | | |
Collapse
|