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https://www.readbyqxmd.com/read/28100302/fecal-virome-of-healthy-chickens-reveals-a-large-diversity-of-the-eukaryote-viral-community-including-novel-circular-single-stranded-dna-viruses
#1
Diane Lima, Samuel Paulo Cibulski, Fabrine Finkler, Thais Teixeira, Ana Paula Varela, Cristine Cerva, Márcia Loiko, Camila Scheffer, Helton Dos Santos, Fabiana Mayer, Paulo Roehe
This study is focused on the identification of the fecal virome of healthy chickens raised in high-density, export-driven poultry farms in Brazil. Following high-throughput sequencing, a total of 7,743 de novo-assembled contigs were constructed and compared with known nucleotide/amino acid sequences from the GenBank database. Analyses with BLASTx revealed that 279 contigs (4%) were related to sequences of eukaryotic viruses. Viral genome sequences (total or partial) indicative of members of recognized viral families, including Adenoviridae, Caliciviridae, Circoviridae, Parvoviridae, Picobirnaviridae, Picornaviridae and Reoviridae, were identified, some of those representing novel genotypes...
January 18, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28094204/microbial-contamination-of-drinking-water-from-risky-tubewells-situated-in-different-hydrological-regions-of-bangladesh
#2
Nepal C Dey, Mahmood Parvez, Digbijoy Dey, Ratnajit Saha, Lucky Ghose, Milan K Barua, Akramul Islam, Mushtaque R Chowdhury
This study, conducted in 40 selected upazilas covering four hydrological regions of Bangladesh, aimed at determining the risk of selected shallow tubewells (depth<30m) used for drinking purpose (n=26,229). This was based on WHO's sanitary inspection guidelines and identifying the association of sanitary inspection indicators and risk scores with microbiological contamination of shallow tubewells. The main objective of the study was to observe the seasonal and regional differences of microbial contamination and finally reaching a conclusion about safe distance between tubewells and latrines by comparing the contamination of two tubewell categories (category-1: distance ≤10m from nearest latrine; n=80 and category 2: distances 11-20m from nearest latrine; n=80) in different geographical contexts...
December 29, 2016: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28093481/phylogenetic-and-pathogenic-analysis-of-mycoplasma-synoviae-isolated-from-native-chicken-breeds-in-china
#3
Shikai Sun, Xin Lin, Junmei Liu, Zhongqiang Tian, Feng Chen, Yongchang Cao, Jianping Qin, Tingrong Luo
Mycoplasma synoviae (M. synoviae) infection leads to serious economic losses in the world every year. Between 2013 and 2014, the infectious synovitis, caused by M. synoviae infection, occurred in native chickens in China and resulted in the loss of millions of chickens in Chinese poultry farms. However, there has been no data about phylogenetic and pathogenic analysis of Chinese M. synoviae isolates. In this study, a total of 110 M. synoviae strains were isolated from M. synoviae infected chickens. The isolates identified in the present study were classified into a new distinct subgroup based on analysis of the 5'-end vlhA sequences, tentatively termed the K group...
January 16, 2017: Poultry Science
https://www.readbyqxmd.com/read/28086751/quantifying-predictors-for-the-spatial-diffusion-of-avian-influenza-virus-in-china
#4
Lu Lu, Andrew J Leigh Brown, Samantha J Lycett
BACKGROUND: Avian influenza virus (AIV) causes both severe outbreaks and endemic disease among poultry and has caused sporadic human infections in Asia, furthermore the routes of transmission in avian species between geographic regions can be numerous and complex. Using nucleotide sequences from the internal protein coding segments of AIV, we performed a Bayesian phylogeographic study to uncover regional routes of transmission and factors predictive of the rate of viral diffusion within China...
January 13, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28068343/the-fleas-siphonaptera-in-iran-diversity-host-range-and-medical-importance
#5
Naseh Maleki-Ravasan, Samaneh Solhjouy-Fard, Jean-Claude Beaucournu, Anne Laudisoit, Ehsan Mostafavi
BACKGROUND: Flea-borne diseases have a wide distribution in the world. Studies on the identity, abundance, distribution and seasonality of the potential vectors of pathogenic agents (e.g. Yersinia pestis, Francisella tularensis, and Rickettsia felis) are necessary tools for controlling and preventing such diseases outbreaks. The improvements of diagnostic tools are partly responsible for an easier detection of otherwise unnoticed agents in the ectoparasitic fauna and as such a good taxonomical knowledge of the potential vectors is crucial...
January 9, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28061999/newcastle-disease-virus-from-domestic-mink-china-2014
#6
Panpan Zhao, Lingshuang Sun, Xiao Sun, Siwen Li, Wen Zhang, Laura A Pulscher, Hongliang Chai, Mingwei Xing
Newcastle disease virus (NDV) is a pathogen that most often infects poultry species. In investigating a 2014 outbreak of encephalitis and death among farmed mink (Mustela vison), we found pathological and later experimental evidence that NDV can infect and cause severe encephalitic and pneumonic disease in these animals. Our findings confirm the host range of NDV.
January 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28049430/spread-of-avian-pathogenic-escherichia-coli-st117-o78-h4-in-nordic-broiler-production
#7
Troels Ronco, Marc Stegger, Rikke Heidemann Olsen, Camilla Sekse, Anne Bang Nordstoga, Tarja Pohjanvirta, Berit Lilje, Ulrike Lyhs, Paal Skytt Andersen, Karl Pedersen
BACKGROUND: Escherichia coli infections known as colibacillosis constitute a considerable challenge to poultry farmers worldwide, in terms of decreased animal welfare and production economy. Colibacillosis is caused by avian pathogenic E. coli (APEC). APEC strains are extraintestinal pathogenic E. coli and have in general been characterized as being a genetically diverse population. In the Nordic countries, poultry farmers depend on import of Swedish broiler breeders which are part of a breeding pyramid...
January 3, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28043390/eimeria-species-occurrence-varies-between-geographic-regions-and-poultry-production-systems-and-may-influence-parasite-genetic-diversity
#8
B Chengat Prakashbabu, V Thenmozhi, G Limon, K Kundu, S Kumar, R Garg, E L Clark, A S R Srinivasa Rao, D G Raj, M Raman, P S Banerjee, F M Tomley, J Guitian, D P Blake
Coccidiosis is one of the biggest challenges faced by the global poultry industry. Recent studies have highlighted the ubiquitous distribution of all Eimeria species which can cause this disease in chickens, but intriguingly revealed a regional divide in genetic diversity and population structure for at least one species, Eimeria tenella. The drivers associated with such distinct geographic variation are unclear, but may impact on the occurrence and extent of resistance to anticoccidial drugs and future subunit vaccines...
January 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28043009/re-evaluation-the-immune-efficacy-of-newcastle-disease-virus-vaccine-in-commercial-laying-chickens
#9
Qingsong Han, Xiaolong Gao, Pengpeng Wu, Sa Xiao, Xinglong Wang, Peng Liu, Lina Tong, Huafang Hao, Shuxia Zhang, Ruyi Dang, Zengqi Yang
Newcastle disease virus (NDV) infection causes serious problems in laying chickens, like reducing egg production, increasing rate of abnormal eggs in spite of strict vaccination in layer farms program. A new evaluation system is needed to show complete protection of the immunization in laying chickens based on the egg-laying performance, rather than clinical signs of the disease. In this study, laying chickens with different anti-NDV HI (hemagglutination-inhibition) antibody titer after vaccination were divided into different groups...
December 20, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/28035601/epidemiological-relationships-of-campylobacter-jejuni-strains-isolated-from-humans-and-chickens-in-south-korea
#10
Jae-Young Oh, Yong-Kuk Kwon, Bai Wei, Hyung-Kwan Jang, Suk-Kyung Lim, Cheon-Hyeon Kim, Suk-Chan Jung, Min-Su Kang
Thirty-nine human isolates of Campylobacter jejuni obtained from a national university hospital during 2007-2010 and 38 chicken isolates of C. jejuni were collected from poultry farms during 2009-2010 in South Korea were used in this study. Campylobacter genomic species and virulence-associated genes were identified by PCR. Pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) were performed to compare their genetic relationships. All isolates were highly resistant to ciprofloxacin, nalidixic acid, and tetracycline...
January 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28035479/evidence-of-independent-evolution-of-genotype-xiii-newcastle-disease-viruses-in-india
#11
Moushumee Das, Sachin Kumar
Despite the prevalence of Newcastle disease virus (NDV) outbreaks in India through the decades, there has been little genetic characterisation of the virulent strains circulating in Northeast India. In 2014, a poultry farm in the Kamrup district of Assam reported an ND outbreak. In this study, genetic analysis and clinicopathological tests showed the virulent nature of the isolate Kamrup. Based on prudent classification criteria, the virulent strain Kamrup was found to be most closely related to members of genotype XIII of class II NDV...
December 29, 2016: Archives of Virology
https://www.readbyqxmd.com/read/28026174/comprehensive-analysis-of-tiamulin-metabolites-in-various-species-of-farm-animals-using-ultra-high-performance-liquid-chromatography-coupled-to-quadrupole-time-of-flight
#12
Feifei Sun, Shupeng Yang, Huiyan Zhang, Jinhui Zhou, Yi Li, Jinzhen Zhang, Yue Jin, Zhanhui Wang, Yanshen Li, Jianzhong Shen, Suxia Zhang, Xingyuan Cao
Tiamulin is an antimicrobial widely used in veterinary practice to treat dysentery and pneumonia in pigs and poultry. However, knowledge about the metabolism of tiamulin is very limited in farm animals. To better understand the biotransformation of tiamulin, in the present study, in vitro and in vivo metabolites of tiamulin in rats, chickens, swine, goats, and cows were identified and elucidated using ultra-high performance liquid chromatography coupled to quadrupole/time-of-flight. As a result, a total of 26 metabolites of tiamulin, identified in vitro and in vivo, and majority of metabolites were revealed for the first time...
December 27, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28003485/genesis-and-dissemination-of-highly-pathogenic-h5n6-avian-influenza-viruses
#13
Lei Yang, Wenfei Zhu, Xiaodan Li, Hong Bo, Ye Zhang, Shumei Zou, Rongbao Gao, Jie Dong, Xiang Zhao, Wenbing Chen, Libo Dong, Xiaohui Zou, Yongcai Xing, Dayan Wang, Yuelong Shu
: Clade 2.3.4.4 highly pathogenic avian influenza viruses (H5Nx) have spread from Asia to other parts of the world. Since 2014, human infections with clade 2.3.4.4 highly pathogenic avian influenza H5N6 viruses have been continuously reported in China. To investigate the genesis of the virus, we analyzed 123 H5 or N6 environmental viruses sampled from live poultry markets or farms during 2012-2015 in Mainland China. Our results indicated that clade 2.3.4.4 H5N2/N6/N8 viruses shared the same hemaglutinin gene that originated in early 2009...
December 21, 2016: Journal of Virology
https://www.readbyqxmd.com/read/28000500/evaluation-of-pcr-and-high-resolution-melt-curve-analysis-for-differentiation-of-salmonella-isolates
#14
Mohammad Sadegh Saeidabadi, Hassan Nili, Habibollah Dadras, Hassan Sharifiyazdi, Joanne Connolly, Mary Valcanis, Shane Raidal, Seyed Ali Ghorashi
Consumption of poultry products contaminated with Salmonella is one of the major causes of foodborne diseases worldwide and therefore detection and differentiation of Salmonella spp. in poultry is important. In this study, oligonucleotide primers were designed from hem-D gene and a PCR followed by high-resolution melt (HRM) curve analysis was developed for rapid differentiation of Salmonella isolates. Amplicons of 228 bp were generated from 16 different Salmonella reference strains and from 65 clinical field isolates mainly from poultry farms...
December 21, 2016: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/27993181/impact-of-cow-strain-and-concentrate-supplementation-on-grazing-behaviour-milk-yield-and-metabolic-state-of-dairy-cows-in-an-organic-pasture-based-feeding-system
#15
C Heublein, F Dohme-Meier, K-H Südekum, R M Bruckmaier, S Thanner, F Schori
As ruminants are able to digest fibre efficiently and assuming that competition for feed v. food use would intensify in the future, cereals and other field crops should primarily be destined to cover the dietary needs of humans and monogastric animals such as poultry and pigs. Farming systems with a reduced or absent concentrate supplementation, as postulated by organic agriculture associations, require adapted dairy cows. The aim of this experiment was to examine the impact of concentrate supplementation on milk production, grazing and rumination behaviour, feed intake, physical activity and blood traits with two Holstein-Friesian cow strains and to conclude the consequences for sustainable and organic farming...
December 20, 2016: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/27992253/farm-fairs-and-petting-zoos-a-review-of-animal-contact-as-a-source-of-zoonotic-enteric-disease
#16
Cheyenne C Conrad, Kim Stanford, Claudia Narvaez-Bravo, Todd Callaway, Tim McAllister
Many public venues such as farms, fairs, and petting zoos encourage animal contact for both educational and entertainment purposes. However, healthy farm animals, including cattle, small ruminants, and poultry, can be reservoirs for enteric zoonotic pathogens, with human infections resulting in nausea, vomiting, diarrhea, and, in some cases, severe complications that can lead to death. As animals shed these organisms in their feces, contamination of themselves and their surroundings is unavoidable. The majority of North Americans reside in urban and suburban settings, and the general public often possess limited knowledge of agricultural practices and minimal contact with farm animals...
December 19, 2016: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/27989811/re-emergence-of-amantadine-resistant-variants-among-highly-pathogenic-avian-influenza-h5n1-viruses-in-egypt
#17
Rabeh El-Shesheny, Ola Bagato, Ahmed Kandeil, Ahmed Mostafa, Sara H Mahmoud, Hamdi M Hassanneen, Richard J Webby, Mohamed A Ali, Kayali Ghazi
Highly pathogenic avian influenza (HPAI) H5N1 virus continues to undergo substantial evolution. Emergence of antiviral resistance among H5N1 avian influenza viruses is a major challenge in the control of pandemic influenza. Numerous studies have focused on the genetic and evolution dynamic of the hemagglutinin and neuraminidase genes; however, studies on the susceptibility of HPAI H5N1 viruses to amantadine and genetic diversity of the matrix (M) gene are limited. Accordingly, we studied the amantadine susceptibility of the HPAI H5N1 viruses isolated in Egypt during 2006-2015 based on genotypic and phenotypic characteristics...
October 29, 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27987112/antimicrobial-resistance-and-virulence-profile-of-enterococci-isolated-from-poultry-and-cattle-sources-in-nigeria
#18
Emmanuel Ochefije Ngbede, Mashood Abiola Raji, Clara Nna Kwanashie, Jacob Kwada Pajhi Kwaga
This study investigated the occurrence, antimicrobial resistance and virulence of Enterococcus from poultry and cattle farms. Three hundred and ninety samples: cloacal/rectal swabs (n = 260) and manure (n = 130] were processed for recovery of Enterococcus species. Standard bacteriological methods were used to isolate, identify and characterize Enterococcus species for antimicrobial susceptibility and expression of virulence traits. Detection of antibiotic resistance and virulence genes was carried out by polymerase chain reaction...
December 16, 2016: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/27986593/modeling-emissions-from-cafo-poultry-farms-in-poland-and-evaluating-potential-risk-to-surrounding-populations
#19
H R Pohl, M Citra, H A Abadin, I Szadkowska-Stańczyk, A Kozajda, L Ingerman, A Nguyen, H E Murray
The world-wide use of concentrated animal feeding operations (CAFOs) for livestock production demands the need to evaluate the potential impact to public health. We estimated the exposure of various airborne pollutants for populations residing in close proximity to 10 poultry CAFOs located in Central Poland. Ammonia (NH3), carbon dioxide (CO2), carbon monoxide (CO), hydrogen sulfide (H2S), methane (CH4), nitrogen dioxide (NO2), nitrous oxide (N2O), sulfur dioxide (SO2), and organic dust were the pollutants of interest for this study...
December 13, 2016: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/27980380/prevalence-and-antibiotic-susceptibility-profiles-of-listeria-monocytogenes-contamination-of-chicken-flocks-and-meat-in-oyo-state-south-western-nigeria-public-health-implications
#20
REVIEW
O O Ishola, J I Mosugu, H K Adesokan
INTRODUCTION: Food contamination with Listeria monocytogenes is on the increase posing threats to public health with growing trends in food products recalls due to suspected Listeria contamination. METHODS: We conducted a cross-sectional study to determine the prevalence and antibiotic susceptibility profiles of Listeria monocytogenes (Lm) among 71 randomly selected poultry farms in Oyo State, Nigeria. A total of 450 samples comprising cloacal swabs (426) and randomly selected dressed chicken meat (24) were cultured for Lm isolation using BrillianceTM Selective Listeria Agar with antibiotics and microbial load count with Nutrient Agar...
September 2016: Journal of Preventive Medicine and Hygiene
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