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Preventive Veterinary Medicine

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https://www.readbyqxmd.com/read/28622794/schmallenberg-virus-predicting-within-herd-seroprevalence-using-bulk-tank-milk-antibody-titres-and-exploring-individual-animal-antibody-titres-using-empirical-distribution-functions-edf
#1
Á B Collins, J Grant, D Barrett, M L Doherty, A Hallinan, J F Mee
Schmallenberg virus (SBV) is transmitted by Culicoides spp. biting midges and can cause abortions and congenital malformations in ruminants and milk drop in dairy cattle. Estimating true within-herd seroprevalence is an essential component of efficient and cost-effective SBV surveillance programs. The objectives of this study were: (1) determine the correlation between bulk-tank milk (BTM)-ELISA results and within-herd seroprevalence, (2) evaluate the ability of BTM-ELISA results to predict within-herd seroprevalence and (3) explore the distributions of individual animal serology results using novel statistical methodology...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28622793/comparison-of-bacterial-culture-and-qpcr-testing-of-rectal-and-pen-floor-samples-as-diagnostic-approaches-to-detect-enterotoxic-escherichia-coli-in-nursery-pigs
#2
N R Weber, J P Nielsen, C K Hjulsager, S E Jorsal, S Haugegaard, C F Hansen, K S Pedersen
Enterotoxigenic E. coli (ETEC) are a major cause of diarrhoea in weaned pigs. The objective of this study was to evaluate the agreement at pen level among three different diagnostic approaches for the detection of ETEC in groups of nursery pigs with diarrhoea. The diagnostic approaches used were: bacterial culturing of faecal samples from three pigs (per pen) with clinical diarrhoea and subsequent testing for virulence genes in E. coli isolates; bacterial culturing of pen floor samples and subsequent testing for virulence genes in E...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28622792/a-cross-sectional-field-study-on-potential-associations-between-feed-quality-measures-and-usage-of-antimicrobials-in-commercial-mink-neovison-vison
#3
V F Jensen, H M Sommer, T Struve, J Clausen, M Chriél
Feed quality is generally assumed to affect health status in animal production. In previous studies, the feed producer has been found to affect the occurrence of gastrointestinal disease and antimicrobial use in Mink (Neovison vison). Mink are fed with moist, freshly produced feed, based on perishable ingredients. The objective of this study was to investigate the potential effect of specific feed parameters on antimicrobial use on herd level. The study was cross-sectional, including 1472 mink herds, responsible for 97% of oral antimicrobials prescribed for Danish mink during the study period, 2012-2014...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28622791/prevalence-and-associated-risk-factors-of-haemoparasites-and-their-effects-on-hematological-profile-in-domesticated-chickens-in-district-layyah-punjab-pakistan
#4
Muhammad Ali-Ul-Husnain Naqvi, Muhammad Kasib Khan, Zafar Iqbal, Hafiz Muhammad Rizwan, Muhammad Nisar Khan, Sana Zahra Naqvi, Arsalan Zafar, Zia Ud Din Sindhu, Rao Zahid Abbas, Asghar Abbas
Several haemoparasites commonly infect avian species, including chicken that significantly decline productivity and ultimately lead to high mortality rate. The current study was designed to assess the prevalence and associated risk factors of haemoparasites in domesticated chickens in and around District Layyah, Punjab Province, Pakistan. For this purpose, blood samples from a total of 384 backyard chickens were collected from wing vein using sterile insulin syringe. The parasites were identified from Giemsa stained thin blood smears based on morphological features using standard keys...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28622790/early-life-risk-factors-identified-for-owner-reported-feline-overweight-and-obesity-at-around-two-years-of-age
#5
E C Rowe, W J Browne, R A Casey, T J Gruffydd-Jones, J K Murray
Obesity is considered the second most common health problem in pet cats in developed countries. This study used prospective data from a longitudinal study of pet cats ('C.L.A.W.S.', www.bristol.ac.uk/vetscience/claws) to identify early-life risk factors for feline overweight/obesity occurring at around two years of age. Data were collected via five owner-completed questionnaires (for cats aged two-six months, six months, 12 months, 18 months and two years respectively) completed between May 2011 and April 2015...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28622789/characterization-of-the-epidemiology-of-bat-borne-rabies-in-chile-between-2003-and-2013
#6
Raul Alegria-Moran, Daniela Miranda, Matt Barnard, Alonso Parra, Lisette Lapierre
Rabies is a zoonotic disease of great impact to public health. According to the World Health Organization, the country of Chile is currently declared free from human rabies transmitted by dogs. An epidemiological characterization and description was conducted using rabies data from 2003 to 2013 held by the National Program for Prevention and Control of Rabies from the Ministry of Health, consisting of bats samples reported as suspect and samples taken by active surveillance (bats brain tissue). Spatial autocorrelation analysis was performed using Local Indicators of Spatial Association (LISA) statistics, particularly Moran's I index, for the detection of spatial clusters...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28622788/a-questionnaire-study-of-associations-between-potential-risk-factors-and-salmonella-status-in-swedish-dairy-herds
#7
Estelle C C Ågren, Jenny Frössling, Helene Wahlström, Ulf Emanuelson, Susanna Sternberg Lewerin
In this study associations between potential risk factors and salmonella status in Swedish dairy herds were investigated. A case-control study design was used, including existing as well as new cases. Herds were assigned a salmonella status on the basis of antibody analysis of bulk milk samples. Information on potential risk factors was collected from registry data and from farmers via a questionnaire. Univariable and multivariable logistic regression analyses were used to investigate associations between salmonella status and potential risk factors...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28622787/monitoring-of-the-newborn-dog-and-prediction-of-neonatal-mortality
#8
Hanna Mila, Aurélien Grellet, Marine Delebarre, Claire Mariani, Alexandre Feugier, Sylvie Chastant-Maillard
Despite the high neonatal mortality rate in puppies, pertinent criteria for health evaluation of the newborns are not defined. This study was thus designed to measure and to characterize factors of variation of six health parameters in dog neonates, and to evaluate their value as predictors of neonatal mortality. A total of 347 purebred puppies under identical conditions of housing and management were examined within the first 8h after birth and then at Day 1. The first health evaluation included Apgar score, weight, blood glucose, lactate and β-hydroxybutyrate concentration, rectal temperature and urine specific gravity (SG)...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28622786/dairy-cow-disability-weights
#9
Craig S McConnel, Ashleigh A McNeil, Joleen C Hadrich, Jason E Lombard, Franklyn B Garry, Jane Heller
Over the past 175 years, data related to human disease and death have progressed to a summary measure of population health, the Disability-Adjusted Life Year (DALY). As dairies have intensified there has been no equivalent measure of the impact of disease on the productive life and well-being of animals. The development of a disease-adjusted metric requires a consistent set of disability weights that reflect the relative severity of important diseases. The objective of this study was to use an international survey of dairy authorities to derive disability weights for primary disease categories recorded on dairies...
August 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28606367/assessment-of-hygienic-conditions-of-live-bird-markets-on-avian-influenza-in-chittagong-metro-bangladesh
#10
Md Abu Sayeed, Casey Smallwood, Tasneem Imam, Rashed Mahmud, Rubyath Binte Hasan, Mahmudul Hasan, M Sawkat Anwer, Md Harun Rashid, Md Ahasanul Hoque
Live Bird Markets (LBMs) in Asian countries are considered as hubs for the spread and maintenance of different infectious diseases. In Bangladesh, LBMs are the major source of live and dressed poultry to consumers and until now only a few studies have been conducted targeting infectious agent status such as avian influenza virus (AIV) prevalence of LBMs in Bangladesh. Therefore, a cross sectional study was conducted using all 40 LBMs within the Chittagong Metropolitan Area (CMA) of Bangladesh targeting demographic information and hygienic status of LBMs in concurrence with AIV prevalence and its subtype distribution, as well as the associated risk factors for AIV...
July 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28606366/herd-level-seroprevalence-and-associated-risk-factors-for-bovine-cysticercosis-in-the-state-of-para%C3%A3-ba-northeastern-brazil
#11
Amanda R A Maia, Leise G Fernandes, Paulo S A Pinto, Rafaella P M Guimarães-Peixoto, Letícia F Silva, Carolina S A B Santos, Clebert J Alves, Inácio J Clementino, Sérgio S Azevedo
This study focused on estimating the herd-level and animal-level prevalences, and identifying risk factors associated with bovine cysticercosis in the State of Paraíba, Northeastern Brazil. The state was divided into three sampling strata: Sertao, Borborema and Zona da Mata/Agreste. For each sampling stratum, herd-level and animal-level prevalences were estimated by a two-stage sampling survey. First, a pre-established number of herds (primary sampling units) were randomly selected; second, within each herd a pre-established number of cows aged ≥24months were systematically selected (secondary sampling units)...
July 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28606365/estimate-of-the-economic-impact-of-mastitis-a-case-study-in-a-holstein-dairy-herd-under-tropical-conditions
#12
Juliana L B Guimarães, Maria A V P Brito, Carla C Lange, Márcio R Silva, João B Ribeiro, Letícia C Mendonça, Juliana F M Mendonça, Guilherme N Souza
The aim of this study was to estimate the economic impact of mastitis at the herd level and the weight (percent) of the components of this impact in a Holstein dairy herd under tropical conditions. Three estimates of the economic impact of mastitis were performed. In estimates 1 and 2 the real production and economic indices from February 2011 to January 2012 were considered. In the estimate 1, indices for mastitis classified as ideal were considered, whereas in the estimate 2, the mastitis indices used were those recorded at the farm and at Holstein Cattle Association of Minas Gerais State database (real indices)...
July 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28606364/cefotaxime-resistant-e-coli-in-dairy-and-beef-cattle-farms-joint-analyses-of-two-cross-sectional-investigations-in-germany
#13
Katja Hille, Inga Ruddat, Annette Schmid, Johanna Hering, Maria Hartmann, Christiane von Münchhausen, Bettina Schneider, Ute Messelhäusser, Anika Friese, Rolf Mansfeld, Annemarie Käsbohrer, Stefan Hörmansdorfer, Uwe Roesler, Lothar Kreienbrock
Resistance to third-generation cephalosporins and other beta-lactam antibiotics is of major concern for animal and human health. Knowledge of the prevalence of resistant bacteria in primary production is an important element to estimate transmission along the stages in the food production chain and the exposure of the human population. The primary objective of this study was to determine the prevalence of cefotaxime-resistant commensal E. coli in dairy and beef cattle production units throughout Germany. Secondarily, the association between management factors and the presence of cefotaxime resistance was investigated...
July 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28606363/patterns-of-calving-and-young-stock-movement-in-ireland-and-their-implications-for-bvd-serosurveillance
#14
Jamie A Tratalos, David A Graham, Simon J More
The Republic of Ireland has a national eradication programme for bovine viral diarrhoea virus (BVDv) based on tissue-tag testing of calves to identify persistently infected animals (PIs). It has been proposed that serological testing of a sample of home-bred young stock would be a more cost effective surveillance mechanism than continued tissue-tag testing in herds which have previously been found to be BVD-free. These animals would have to be at least 6 months of age to avoid interference from maternal antibodies in test results...
July 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28606362/cost-of-porcine-reproductive-and-respiratory-syndrome-virus-at-individual-farm-level-an-economic-disease-model
#15
H Nathues, P Alarcon, J Rushton, R Jolie, K Fiebig, M Jimenez, V Geurts, C Nathues
Porcine reproductive and respiratory syndrome (PRRS) is reported to be among the diseases with the highest economic impact in modern pig production worldwide. Yet, the economic impact of the disease at farm level is not well understood as, especially in endemically infected pig herds, losses are often not obvious. It is therefore difficult for farmers and veterinarians to appraise whether control measures such as virus elimination or vaccination will be economically beneficial for their farm. Thus, aim of this study was to develop an epidemiological and economic model to determine the costs of PRRS for an individual pig farm...
July 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28606361/repeated-isolation-of-virulent-newcastle-disease-viruses-in-poultry-and-captive-non-poultry-avian-species-in-pakistan-from-2011-to-2016
#16
Abdul Wajid, Kiril M Dimitrov, Muhammad Wasim, Shafqat Fatima Rehmani, Asma Basharat, Tasra Bibi, Saima Arif, Tahir Yaqub, Muhammad Tayyab, Mustafa Ababneh, Poonam Sharma, Patti J Miller, Claudio L Afonso
Virulent viruses of the panzootic Avian avulavirus 1 (AAvV-1) of sub-genotype VIIi were repeatedly isolated (2011-2016) from commercial chickens and from multiple non-poultry avian species in Pakistan. These findings provide evidence for the existence of epidemiological links between Newcastle disease outbreaks in commercial poultry and infections with virulent AAvV-1 strains in other avian species kept in proximity to poultry. Our results suggest that the endemicity of Newcastle disease in Pakistan involves multiple hosts and environments...
July 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28532994/johne-s-disease-in-the-eyes-of-irish-cattle-farmers-a-qualitative-narrative-research-approach-to-understanding-implications-for-disease-management
#17
Conor G McAloon, Áine Macken-Walsh, Lisa Moran, Paul Whyte, Simon J More, Luke O'Grady, Michael L Doherty
Bovine Johne's Disease (JD) is a disease characterised by chronic granulomatous enteritis which manifests clinically as a protein-losing enteropathy causing diarrhoea, hypoproteinaemia, emaciation and, eventually death. Some research exists to suggest that the aetiologic pathogen Mycobacterium avium subspecies paratuberculosis may pose a zoonotic risk. Nationally coordinated control programmes have been introduced in many of the major milk producing countries across the world. However, JD is challenging to control in infected herds owing to limitations of diagnostic tests and the long incubation period of the disease...
June 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28532993/canine-leptospirosis-in-switzerland-a-prospective-cross-sectional-study-examining-seroprevalence-risk-factors-and-urinary-shedding-of-pathogenic-leptospires
#18
Alessandro Delaude, Sabrina Rodriguez-Campos, Anou Dreyfus, Michel Jacques Counotte, Thierry Francey, Ariane Schweighauser, Sophie Lettry, Simone Schuller
Leptospirosis is an important worldwide zoonosis. While human leptospirosis remains rare in Switzerland, the incidence of canine leptospirosis is unusually high compared to other European countries. The aims of this cross-sectional study were to determine the exposure of asymtomatic dogs to pathogenic Leptospira in Switzerland, to characterise risk factors associated with seropositivity and to determine the prevalence of urinary shedding. Sampling was stratified to cover the whole of Switzerland. Sera were tested by microscopic agglutination test for antibodies against a panel of 12 serovars...
June 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28532992/assessment-of-concurrent-infection-with-bovine-viral-diarrhoea-virus-bvdv-and-mycobacterium-bovis-a-herd-level-risk-factor-analysis-from-northern-ireland
#19
A W Byrne, M Guelbenzu-Gonzalo, S A J Strain, S McBride, J Graham, A Lahuerta-Marin, R Harwood, D A Graham, S McDowell
Bovine viral diarrhoea virus (BVDV) is a significant pathogen of cattle, leading to severe economic and animal-welfare impacts. Furthermore, the pathogen has been associated with impacting the progression or spread of other pathogens (e.g. Mycobacterium bovis, the causative agent of bovine tuberculosis (bTB)). During this study we investigated (i) risk factors for BVDV at a herd-level and (ii) whether there was any association between BVDV and herd-level bTB risk. The data for this study were gathered from a voluntary BVDV control programme in Northern Ireland (2013-2015) based on the identification of virus positive animals through tissue tag testing of calves...
June 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28532991/estimating-population-density-for-disease-risk-assessment-the-importance-of-understanding-the-area-of-influence-of-traps-using-wild-pigs-as-an-example
#20
Amy J Davis, Bruce Leland, Michael Bodenchuk, Kurt C VerCauteren, Kim M Pepin
Population density is a key driver of disease dynamics in wildlife populations. Accurate disease risk assessment and determination of management impacts on wildlife populations requires an ability to estimate population density alongside management actions. A common management technique for controlling wildlife populations to monitor and mitigate disease transmission risk is trapping (e.g., box traps, corral traps, drop nets). Although abundance can be estimated from trapping actions using a variety of analytical approaches, inference is limited by the spatial extent to which a trap attracts animals on the landscape...
June 1, 2017: Preventive Veterinary Medicine
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