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Bovine digital dermatitis

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https://www.readbyqxmd.com/read/28642342/survival-of-contagious-ovine-digital-dermatitis-codd-associated-treponemes-on-disposable-gloves-after-handling-codd-affected-feet
#1
J W Angell, S R Clegg, D H Grove-White, R W Blowey, S D Carter, J S Duncan, N J Evans
Both contagious ovine digital dermatitis (CODD) and bovine digital dermatitis (BDD) are causes of infectious lameness in sheep and cattle, respectively, and are strongly associated with the presence of specific treponemes, with three different cultivable phylogroups commonly isolated: Treponema medium, Treponema phagedenis and Treponema pedis The aim of this study was to investigate the potential to transmit CODD-associated Treponema species via gloves used when handling visibly clinically affected animals...
June 22, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28629299/farm-and-cow-level-prevalence-of-bovine-digital-dermatitis-on-dairy-farms-in-taranaki-new-zealand
#2
D A Yang, C Heuer, R Laven, W D Vink, R N Chesterton
AIMS: This aim of this cross-sectional study was to investigate the herd and cow-level prevalence of bovine digital dermatitis (BDD) in dairy farms in the northern Taranaki region of New Zealand, and to identify whether there was any spatial clustering of herds with the disease. METHODS: A survey of 224 dairy farms in the northern Taranaki region of New Zealand was undertaken from September 2014 to February 2015. Following training in robust criteria to confirm BDD visually, a technician inspected the rear feet of every milking cow on the farms during milking...
June 19, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28552873/the-therapeutic-efficacy-of-allyl-isothiocyanate-in-cows-with-bovine-digital-dermatitis
#3
Kanako Chiba, Tamako Miyazaki, Yasushi Sekiyama, Masao Miyazaki, Keiji Okada
Bovine digital dermatitis (BDD) is the most prevalent infectious cause of lameness in cattle. Because Treponema infection is a major etiology of BDD, the most common treatment of BDD is an antibiotic. Nonetheless, dairy cows require a withdrawal period after antibiotic treatment before their milk can be marketed. To address the problem, in this study, we tested whether 3 nonantibiotic agents (used separately)-allyl isothiocyanate (AITC), sodium alginate, and calcium hydroxide-alleviate BDD lesions in dairy cows...
May 26, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28542573/development-of-real-time-pcr-and-loop-mediated-isothermal-amplification-lamp-assays-for-the-differential-detection-of-digital-dermatitis-associated-treponemes
#4
Kelly Anklam, Megan Kulow, Wataru Yamazaki, Dörte Döpfer
Bovine digital dermatitis (DD) is a severe infectious cause of lameness in cattle worldwide, with important economic and welfare consequences. There are three treponeme phylogroups (T. pedis, T. phagedenis, and T. medium) that are implicated in playing an important causative role in DD. This study was conducted to develop real-time PCR and loop-mediated isothermal amplification (LAMP) assays for the detection and differentiation of the three treponeme phylogroups associated with DD. The real-time PCR treponeme phylogroup assays targeted the 16S-23S rDNA intergenic space (ITS) for T...
2017: PloS One
https://www.readbyqxmd.com/read/28465327/comparing-the-curative-efficacy-of-topical-treatment-with-thiamphenicol-and-oxytetracycline-on-digital-dermatitis-lesions-in-dairy-cattle
#5
RANDOMIZED CONTROLLED TRIAL
M Holzhauer, R Ploegmakers-van Deventer, D Smits, W Swart
The efficacy of two topically applied antibiotics for the treatment of painful ulcerative stage of bovine digital dermatitis (BDD) lesions was compared in a clinical trial conducted on five dairy farms in the Netherlands during the autumn of 2015. A total of 109 cows with an ulcerative (M2) stage of BDD were randomly appointed a treatment with an antibiotic-based spray. One treatment contained thiamphenicol as active ingredient (TAF). The other treatment had oxytetracycline as active ingredient (ENG). The experimental unit for this study was the hind claw with the presence of an ulcerative BDD lesion...
May 20, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28435201/association-of-claw-disorders-with-subclinical-intramammary-infections-in-egyptian-dairy-cows
#6
Walid Refaai, Medhat Gad, Yasser Mahmmod
AIM: Bovine mastitis and lameness are the most common production diseases affecting dairy farms worldwide resulting in huge economic impact and impaired animal welfare. The objective of this field study was to investigate the association of infectious and non-infectious claw disorders with the occurrence of subclinical intramammary infections (IMIs) diagnosed by California mastitis test (CMT) in dairy cows under Egyptian conditions. MATERIALS AND METHODS: A total of 43 dairy cows were included in this field study...
March 2017: Veterinary World
https://www.readbyqxmd.com/read/28363959/microbiota-analysis-of-an-environmental-slurry-and-its-potential-role-as-a-reservoir-of-bovine-digital-dermatitis-pathogens
#7
Kirstine Klitgaard, Mikael L Strube, Anastasia Isbrand, Tim K Jensen, Martin W Nielsen
At present, very little information exists regarding what role the environmental slurry may play as an infection reservoir and/or route of transmission for bovine digital dermatitis (DD), a disease which is a global problem in dairy herds. To investigate whether DD-related bacteria belong to the indigenous microbiota of the dairy herd environment, we used deep amplicon sequencing of the 16S rRNA gene in 135 slurry samples collected from different sites in 22 dairy farms, with and without DD-infected cows. Both the general bacterial populations and digital dermatitis-associated Treponema were targeted in this study...
June 1, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28092611/prevalence-of-bovine-herpesvirus-type-4-in-aborting-dairy-cows
#8
Đ Cvetojević, B Savić, V Milićević, B Kureljušić, N Jezdimirović, D Jakić-Dimić, M Pavlović, Lj Spalević
Bovine herpesvirus type 4 (BHV-4) is related to many different conditions: infertility, postpartal metritis, vulvovaginitis, mastitis, encephalitis, calf pneumonia, keratoconjunctivitis, cutaneous lesions, digital dermatitis and abortion. In this study a retrospective PCR examination of 100 extracted DNA samples from aborting cows was performed in order to determine: prevalence of BHV-4 in abortive cattle, whether coinfections BHV-4 with other abortifacient pathogens are present in the same sample and to determine the month of gestation when BHV-4 associated abortions were detected...
December 1, 2016: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/27988129/source-of-supplemental-dietary-copper-zinc-and-manganese-affects-fecal-microbial-relative-abundance-in-lactating-dairy-cows
#9
RANDOMIZED CONTROLLED TRIAL
M J Faulkner, B A Wenner, L M Solden, W P Weiss
Appropriate trace mineral supplementation can improve immune response and hoof health in cattle and at much higher rates of supplementation to swine and poultry can alter microbial colonization of the gut, resulting in improved gut health. Diet can influence fecal microbial excretion in cattle, and the fecal microbiome may serve as a means for assessing gastrointestinal microbial changes. We hypothesized that feeding diets that differed in source of supplemental Cu, Zn, or Mn would alter the relative abundance of fecal microbes in lactating dairy cattle and that organic Zn would have the greatest effect...
February 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/27908274/a-novel-approach-to-probe-host-pathogen-interactions-of-bovine-digital-dermatitis-a-model-of-a-complex-polymicrobial-infection
#10
Paolo Marcatili, Martin W Nielsen, Thomas Sicheritz-Pontén, Tim K Jensen, Claus Schafer-Nielsen, Mette Boye, Morten Nielsen, Kirstine Klitgaard
BACKGROUND: Polymicrobial infections represent a great challenge for the clarification of disease etiology and the development of comprehensive diagnostic or therapeutic tools, particularly for fastidious and difficult-to-cultivate bacteria. Using bovine digital dermatitis (DD) as a disease model, we introduce a novel strategy to study the pathogenesis of complex infections. RESULTS: The strategy combines meta-transcriptomics with high-density peptide-microarray technology to screen for in vivo-expressed microbial genes and the host antibody response at the site of infection...
December 1, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27119564/a-highly-effective-protocol-for-the-rapid-and-consistent-induction-of-digital-dermatitis-in-holstein-calves
#11
Adam C Krull, Vickie L Cooper, John W Coatney, Jan K Shearer, Patrick J Gorden, Paul J Plummer
Bovine Digital Dermatitis (DD) is a leading cause of lameness in dairy cattle. DD is reportedly increasing in prevalence in beef cattle feedlots of the US. The exact etiologic agent(s) responsible for the disease have yet to be determined. Multiple studies have demonstrated the presence of a variety of Treponema spp. within lesions. Attempts to reproduce clinically relevant disease using pure cultures of these organisms has failed to result in lesions that mirror the morphology and severity of naturally occurring lesions...
2016: PloS One
https://www.readbyqxmd.com/read/27061657/bovine-digital-dermatitis-current-concepts-from-laboratory-to-farm
#12
REVIEW
N J Evans, R D Murray, S D Carter
Bovine digital dermatitis (DD) is a severe infectious disease causing lameness in dairy cattle worldwide and is an important ruminant welfare problem that has considerable economic issues. Bovine DD is endemic in many regions worldwide and it is important to understand this major disease so that effective control strategies can be identified. There is substantial evidence that specific treponeme phylotypes play an important causative role in bovine DD. This review considers current research, including DD Treponema spp...
May 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27040650/detection-and-isolation-of-digital-dermatitis-treponemes-from-bovine-pressure-sores
#13
S R Clegg, H E Crosby-Durrani, J Bell, R Blundell, R W Blowey, S D Carter, N J Evans
Pressure sores cause severe pain and discomfort in hospitalized people and in farmed cattle and are often infected with unknown bacteria. Pressure sores occur on the upper legs of 6-10% of recumbent cattle and are generally considered to be caused by constant pressure, commonly on bony areas of the limbs. This study analyzed pressure sores taken from the upper limbs of 14 cattle using isolation in culture and nested polymerase chain reaction (PCR) to detect treponemes associated with digital dermatitis (DD)...
May 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27016768/potential-bacterial-core-species-associated-with-digital-dermatitis-in-cattle-herds-identified-by-molecular-profiling-of-interdigital-skin-samples
#14
Martin W Nielsen, Mikael L Strube, Anastasia Isbrand, Worood D H M Al-Medrasi, Mette Boye, Tim K Jensen, Kirstine Klitgaard
Although treponemes are consistently identified in tissue from bovine digital dermatitis (DD) lesions, the definitive etiology of this debilitating polymicrobial disease is still unresolved. To study the microbiomes of 27 DD-infected and 10 healthy interdigital skin samples, we used a combination of different molecular methods. Deep sequencing of the 16S rRNA gene variable regions V1-V2 showed that Treponema, Mycoplasma, Fusobacterium and Porphyromonas were the genera best differentiating the DD samples from the controls...
April 15, 2016: Veterinary Microbiology
https://www.readbyqxmd.com/read/26923049/digital-dermatitis-natural-lesion-progression-and-regression-in-holstein-dairy-cattle-over-3-years
#15
Adam C Krull, Jan K Shearer, Patrick J Gorden, H Morgan Scott, Paul J Plummer
Bovine digital dermatitis (DD) is a leading cause of lameness in dairy cattle in the United States, with prevalence estimates as high as 30%. Whereas clinical lesions have been well described, little is known about the morphologic changes that are associated with the early stages of lesion development from normal skin to clinical lesions. This study used the Iowa DD scoring system to evaluate the epidemiology of natural lesion development by digitally photographing the rear legs of a cohort of dairy cows over a 3-yr period...
May 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/26792149/isolation-of-digital-dermatitis-treponemes-from-cattle-hock-skin-lesions
#16
Simon R Clegg, Jennifer Bell, Stuart Ainsworth, Roger W Blowey, Nick J Bell, Stuart D Carter, Nicholas J Evans
BACKGROUND: Bovine hock lesions present a serious welfare and production issue on dairy farms worldwide. Current theories suggest that trauma is an important factor in the formation of hock lesions, although infection may also play a role in increasing their severity and duration. HYPOTHESIS: Digital dermatitis (DD) lesions in dairy cows are strongly associated with specific treponeme bacteria which are opportunistic invaders of other skin regions. Hock lesions were tested to ascertain if they too contained treponemes...
April 2016: Veterinary Dermatology
https://www.readbyqxmd.com/read/26482550/in-vitro-susceptibility-of-contagious-ovine-digital-dermatitis-associated-treponema-spp-isolates-to-antimicrobial-agents-in-the-uk
#17
Joseph W Angell, Simon R Clegg, Leigh E Sullivan, Jennifer S Duncan, Dai H Grove-White, Stuart D Carter, Nicholas J Evans
BACKGROUND: Contagious ovine digital dermatitis (CODD) is an important cause of infectious lameness in sheep in the UK and Ireland and has a severe impact on the welfare of affected individuals. The three treponemal phylogroups Treponema medium/Treponema vincentii-like, Treponema phagedenis-like and Treponema pedis spirochaetes have been associated with clinical CODD lesions and are considered to be a necessary cause of disease. There are scant data on the antimicrobial susceptibility of the treponemes cultured from CODD lesions...
December 2015: Veterinary Dermatology
https://www.readbyqxmd.com/read/26392840/draft-genome-sequence-of-treponema-phagedenis-strain-v1-isolated-from-bovine-digital-dermatitis
#18
Mamoona Mushtaq, Shahid Manzoor, Märit Pringle, Anna Rosander, Erik Bongcam-Rudloff
'Treponema phagedenis' is considered to be a key agent in the pathogenesis of bovine digital dermatitis, an infectious foot condition of economic and animal welfare importance. We hereby report the draft sequence of 'T. phagedenis' strain V1. The draft genome assembly consists of 51 scaffolds comprising 3,129,551 bp and a GC-content of 39.9 %. Putative pathogenicity related factors have been identified in the genome that can be used in future studies to gain insight into the pathogenic mechanisms of 'T. phagedenis'...
2015: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/26364113/investigating-the-genetic-background-of-bovine-digital-dermatitis-using-improved-definitions-of-clinical-status
#19
K Schöpke, A Gomez, K A Dunbar, H H Swalve, D Döpfer
Bovine digital dermatitis (DD) is an increasing claw health problem in all cattle production systems worldwide. The objective of this study was to evaluate the use of an improved scoring of the clinical status for DD via M-scores accounting for the dynamics of the disease; that is, the transitions from one stage to another. The newly defined traits were then subjected to a genetic analysis to determine the genetic background for susceptibility to DD. Data consisted of 6,444 clinical observations from 729 Holstein heifers in a commercial dairy herd, collected applying the M-score system...
November 2015: Journal of Dairy Science
https://www.readbyqxmd.com/read/26364111/short-communication-determination-of-the-ability-of-thymox-to-kill-or-inhibit-various-species-of-microorganisms-associated-with-infectious-causes-of-bovine-lameness-in-vitro
#20
Megan Kulow, Fahimeh Zibaee, Marianne Allard, Dörte Döpfer
Infectious claw diseases continue to plague cattle in intensively managed husbandry systems. Poor foot hygiene and constant moist environments lead to the infection and spread of diseases such as digital dermatitis (hairy heel warts), interdigital dermatitis, and interdigital phlegmon (foot rot). Currently, copper sulfate and formalin are the most widely used disinfecting agents in bovine footbaths; however, the industry could benefit from more environmentally and worker friendly substitutes. This study determined the in vitro minimum inhibitory concentrations and minimum bactericidal concentrations of Thymox (Laboratoire M2, Sherbrooke, Québec, Canada) for a selection of microorganisms related to infectious bovine foot diseases...
November 2015: Journal of Dairy Science
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