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https://www.readbyqxmd.com/read/28632789/movement-and-contact-patterns-of-long-distance-free-grazing-ducks-and-avian-influenza-persistence-in-vietnam
#1
Anne Meyer, Tung Xuan Dinh, Thu Van Nhu, Long Thanh Pham, Scott Newman, Thuy Thi Thanh Nguyen, Dirk Udo Pfeiffer, Timothée Vergne
Presence of ducks, and in particular of free-grazing ducks, has consistently been shown to be one of the most important risk factors for highly pathogenic avian influenza outbreaks which has compromised poultry production in South-East Asia since the early 2000s and continues to threaten public health, farmers' livelihood and food security. Although free-grazing duck production has been practised for decades in South-East Asia, there are few published studies describing this production system, which is suspected to play an important role in the maintenance of avian influenza viruses...
2017: PloS One
https://www.readbyqxmd.com/read/28626158/ducks-as-a-potential-reservoir-for-pasteurella-multocida-infection-detected-using-a-new-romph-based-elisa
#2
Rongchang Liu, Cuiteng Chen, Longfei Cheng, Ronghui Lu, Guanghua Fu, Shaohua Shi, Hongmei Chen, Chunhe Wan, Jiansheng Lin, Qiuling Fu, Yu Huang
Pasteurella multocida is an important pathogen of numerous domestic poultry and wild animals and is associated with a variety of diseases including fowl cholera. The aim of this study was to develop an indirect enzyme-linked immunosorbent assay (ELISA) based on recombinant outer-membrane protein H (rOmpH) for detection of anti-P. multocida antibodies in serum to determine their prevalence in Chinese ducks. The P. multocida ompH gene was cloned into pET32a, and rOmpH was expressed in Escherichia coli BL21 (DE3)...
June 15, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28622473/nonculturability-might-underestimate-the-occurrence-of-campylobacter-in-broiler-litter
#3
Issmat I Kassem, Yosra A Helmy, Dipak Kathayat, Rosario A Candelero-Rueda, Anand Kumar, Loic Deblais, Huang-Chi Huang, Orhan Sahin, Qijing Zhang, Gireesh Rajashekara
We investigated the contribution of litter to the occurrence of Campylobacter on three broiler farms, which were known to have low (LO) and high (HI-A and HI-B) Campylobacter prevalence. For this purpose, we collected litter samples (n = 288) during and after two rearing cycles from each farm. We evaluated the occurrence of Campylobacter (using selective enrichment and quantitative real-time polymerase chain reaction [q-PCR] analysis) in the litter samples as well as the litter's pH and moisture content...
June 16, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28620682/infectious-bursal-disease-outbreak-investigation-molecular-characterization-and-vaccine-immunogenicity-trial-in-ethiopia
#4
Aregitu Mekuriaw, Molalegne Bitew, Esyas Gelaye, Bedaso Mamo, Gelagay Ayelet
The study was conducted with the objective of isolation and molecular characterization of infectious bursal disease virus (IBDV) circulating in Ethiopia and to assess the immunogenicity of different commercially available live attenuated IBD vaccines and finally to select the appropriate vaccine strain for the existing IBDV. Outbreak samples collected from different poultry farms with IBD infection between 2013 and 2015 were used for the virus isolation and molecular characterization. IBD vaccine immunogenicity test was conducted using four different commercially available live attenuated IBD vaccine strains: namely D78, B2K, LC75, and EXTREM...
June 15, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28616387/biosecurity-and-geospatial-analysis-of-mycoplasma-infections-in-poultry-farms-at-al-jabal-al-gharbi-region-of-libya
#5
Abdulwahab Kammon, Paolo Mulatti, Monica Lorenzetto, Nicola Ferre, Monier Sharif, Ibrahim Eldaghayes, Abdunaser Dayhum
Geospatial database of farm locations and biosecurity measures are essential to control disease outbreaks. A study was conducted to establish geospatial database on poultry farms in Al-Jabal Al-Gharbi region of Libya, to evaluate the biosecurity level of each farm and to determine the seroprevalence of mycoplasma and its relation to biosecurity level. A field team of 7 Veterinarians belongs to the National Center of Animal Health was assigned for data recording and collection of blood samples. Personal information of the producers, geographical locations, biosecurity measures and description of the poultry farms were recorded...
2017: Open veterinary journal
https://www.readbyqxmd.com/read/28611739/the-pk-pd-relationship-and-resistance-development-of-danofloxacin-against-mycoplasma-gallisepticum-in-an-in-vivo-infection-model
#6
Nan Zhang, Yuzhi Wu, Zilong Huang, Lihua Yao, Longfei Zhang, Qinren Cai, Xiangguang Shen, Hongxia Jiang, Huanzhong Ding
Mycoplasma gallisepticum is the causative agent of chronic respiratory disease (CRD), a prevalent disease of poultry, which is responsible for significant economic losses in farms. Although several antimicrobial agents are currently recommended for the treatment and prevention of M. gallisepticum infections, investigations of M. gallisepticum have been hampered by their fastidious growth requirements and slow growth rate. As such, little work has been conducted concerning the PK/PD relationship and mechanisms of antibiotic resistance between antimicrobials against M...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28595918/studies-on-bromadiolone-resistance-in-rattus-rattus-populations-from-punjab-india
#7
Nancy Garg, Neena Singla, Vikas Jindal, Bhupinder K Babbar
There are several reports on development of resistance to bromadiolone in different species of rodents around the globe, however, there is no such report involving systematic study from India. Hence, present study was carried out to investigate current status of bromadiolone resistance in house rat (Rattus rattus; n=154) collected from different poultry farms (n=8) based on feeding test, blood clotting response (BCR) test and molecular characterization of VKORC1 gene. Based on feeding test and BCR test, 28% rats were suspected to be resistant...
June 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28594893/pandemic-extra-intestinal-pathogenic-escherichia-coli-expec-clonal-group-o6-b2-st73-as-a-cause-of-avian-colibacillosis-in-brazil
#8
Marcos Paulo Vieira Cunha, Andre Becker Saidenberg, Andrea Micke Moreno, Antonio José Piantino Ferreira, Mônica Aparecida Midolli Vieira, Tânia Aparecida Tardelli Gomes, Terezinha Knöbl
Extra-intestinal pathogenic Escherichia coli (ExPEC) represent an emerging pathogen, with pandemic strains increasingly involved in cases of urinary tract infections (UTIs), bacteremia, and meningitis. In addition to affecting humans, the avian pathotype of ExPEC, avian pathogenic E. coli (APEC), causes severe economic losses to the poultry industry. Several studies have revealed overlapping characteristics between APEC and human ExPEC, leading to the hypothesis of a zoonotic potential of poultry strains. However, the description of certain important pandemic clones, such as Sequence Type 73 (ST73), has not been reported in food sources...
2017: PloS One
https://www.readbyqxmd.com/read/28579143/energy-from-poultry-waste-an-aspen-plus-based-approach-to-the-thermo-chemical-processes
#9
Gianluca Cavalaglio, Valentina Coccia, Franco Cotana, Mattia Gelosia, Andrea Nicolini, Alessandro Petrozzi
A particular approach to the task of energy conversion of a residual waste material was properly experienced during the implementation of the national funded Enerpoll project. This project is a case study developed in the estate of a poultry farm that is located in a rural area of central Italy (Umbria Region); such a farm was chosen for the research project since it is almost representative of many similar small-sized breeding realties of the Italian regional context. The purpose of the case study was the disposal of a waste material (i...
May 31, 2017: Waste Management
https://www.readbyqxmd.com/read/28575116/molecular-diagnosis-and-characterization-of-cryptosporidium-spp-in-turkeys-and-chickens-in-germany-reveals-evidence-for-previously-undetected-parasite-species
#10
Yosra A Helmy, Jürgen Krücken, El-Sayed M Abdelwhab, Georg von Samson-Himmelstjerna, Hafez M Hafez
A total of 256 fecal specimens were randomly collected from farmed poultry in Germany and screened for the presence of Cryptosporidium spp. by PCR and further characterized by direct automated DNA sequencing. Using a nested PCR amplifying approximately 830 bp 18S rDNA fragment, 7.03% (n = 18) of the samples were Cryptosporidium-positive. In detail, Cryptosporidium was detected in 9.3% (8/86) of turkeys, 5.7% (9/158) of broilers and 8.3% (1/12) of layers. After DNA sequencing, Cryptosporidium parvum the most frequently observed species was identified in 5...
2017: PloS One
https://www.readbyqxmd.com/read/28567032/recurring-necrotic-enteritis-outbreaks-in-commercial-broiler-chicken-flocks-strongly-influence-toxin-gene-carriage-and-species-richness-in-the-resident-clostridium-perfringens-population
#11
Marie-Lou Gaucher, Gabriel G Perron, Julie Arsenault, Ann Letellier, Martine Boulianne, Sylvain Quessy
Extensive use of antibiotic growth promoters (AGPs) in food animals has been questioned due to the globally increasing problem of antibiotic resistance. For the poultry industry, digestive health management following AGP withdrawal in Europe has been a challenge, especially the control of necrotic enteritis. Much research work has focused on gut health in commercial broiler chicken husbandry. Understanding the behavior of Clostridium perfringens in its ecological niche, the poultry barn, is key to a sustainable and cost-effective production in the absence of AGPs...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28558423/public-environmental-awareness-of-water-pollution-from-urban-growth-the-case-of-zarjub-and-goharrud-rivers-in-rasht-iran
#12
Seyyed Ali Noorhosseini, Mohammad Sadegh Allahyari, Christos A Damalas, Sina Siavash Moghaddam
Rivers in urban areas have been associated with water quality problems because of the practice of discharging untreated domestic and industrial waste into the water bodies. However, to what extent the public can identify specific environmental problems and whether people are ready to cope with potential risks is to a great extent unknown. Public environmental awareness of factors underpinning the pollution of rivers and approaches for reducing it were studied in Rasht City of Guilan Province in northern Iran, with Zarjub and Goharrud rivers as a case study...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28553267/effect-of-feed-additives-on-productivity-and-campylobacter-spp-loads-in-broilers-reared-under-free-range-conditions
#13
Muriel Guyard-Nicodème, Adeline Huneau-Salaün, Fabrizio A Tatone, Fabien Skiba, Maxime Quentin, Ségolène Quesne, Typhaine Poezevara, Marianne Chemaly
The poultry reservoir, especially broiler meat, is generally recognized as one of the most-important sources for human Campylobacteriosis. The measures to control Campylobacter targeted essentially the primary production level. The aim of this work was to evaluate the effectiveness of different treatments against natural Campylobacter colonization in a French experimental farm of free-range broilers during the whole rearing period. Five commercial products and a combination of two of them were tested and all the products were added to feed or to water at the dose recommended by the suppliers...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28549473/attitudes-of-consumers-and-live-poultry-workers-to-central-slaughtering-in-controlling-h7n9-a-cross-sectional-study
#14
Xiao Lin, Dingmei Zhang, Xinwei Wang, Yun Huang, Zhicheng Du, Yaming Zou, Jiahai Lu, Yuantao Hao
BACKGROUND: Guangdong Province in the Pearl River Delta of Southeast China is among the areas in the country with the highest rates of avian flu cases. In order to control the outbreak of human-infected H7N9 cases, Guangdong launched a new policy on the central slaughtering of live poultry in 2015. This study aims to evaluate attitudes of consumers and live-poultry workers toward the policy. The live-poultry workers consisted of two sub-groups: live-poultry traders and poultry farm workers...
May 26, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28549236/assessment-of-pathogenicity-and-antigenicity-of-american-lineage-influenza-h5n2-viruses-in-taiwan
#15
Chun-Yang Lin, Min-Yuan Chia, Po-Ling Chen, Chia-Tsui Yeh, Ming-Chu Cheng, Ih-Jen Su, Min-Shi Lee
During December 2003 and March 2004, large scale epidemics of low-pathogenic avian influenza (LPAI) H5N2 occurred in poultry farms in central and southern Taiwan. Based on genomic analysis, these H5N2 viruses contain HA and NA genes of American-lineage H5N2 viruses and six internal genes from avian influenza A/H6N1 viruses endemic in poultry in Taiwan. After disappearing for several years, these novel influenza H5N2 viruses caused outbreaks in poultry farms again in 2008, 2010 and 2012, and have evolved into high pathogenic AI (HPAI) since 2010...
May 23, 2017: Virology
https://www.readbyqxmd.com/read/28532990/-catch-22-biosecurity-awareness-interpretation-and-practice-amongst-poultry-catchers
#16
Caroline Millman, Rob Christley, Dan Rigby, Diana Dennis, Sarah J O'Brien, Nicola Williams
Campylobacter contamination of chicken on sale in the UK remains at high levels and has a substantial public health impact. This has prompted the application of many interventions in the supply chain, including enhanced biosecurity measures on-farm. Catching and thinning are acknowledged as threats to the maintenance of good biosecurity, yet the people employed to undertake this critical work (i.e. 'catchers') are a rarely studied group. This study uses a mixed methods approach to investigate catchers' (n=53) understanding of the biosecurity threats posed by the catching and thinning, and the barriers to good biosecurity practice...
June 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28532813/genetics-and-biological-property-analysis-of-korea-lineage-of-influenza-a-h9n2-viruses
#17
Min Kang, Hyung-Kwan Jang
H9N2 influenza viruses have been detected from wild and domestic avian species including chickens and ducks worldwide. Few studies have compared the biological properties of different H9N2 lineages or determined whether certain lineages might pose a higher risk to mammals, especially H9N2 viruses of Korean lineage. The objective of this study was to characterize the genetic and biological properties of 22 Korean H9N2 viruses and assess their potential risks to mammals. Their complete genomes were analyzed. Some Korean H9N2 viruses were found to carry mammalian host-specific mutations...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28528532/caged-young-pigeons-mortality-by-coleoptera-larvae
#18
Adele Magliano, Jiri Hava, Andrea Di Giulio, Antonino Barone, Claudio De Liberato
Dermestidae and Tenebrionidae are well known inhabitants of bird's nests and poultry farms, under favourable conditions they can be very abundant under favourable conditions. At times, their larvae shift from a scavenging behaviour to a parasitic/predatory one, entering nestling's plumage and feeding on skin and feathers, and nally provoking skin damages and blood losses. These episodes mainly involve species of the genus Dermestes, but the tenebrionid Alphitobius diaperinus h also been reported to be responsible of similar cases...
April 11, 2017: Veterinaria Italiana
https://www.readbyqxmd.com/read/28525340/detection-of-bordetella-avium-by-taqman-real-time-pcr-in-tracheal-swabs-from-wildlife-birds
#19
T Stenzel, D Pestka, B Tykałowski, M Śmiałek, A Koncicki, A Bancerz-Kisiel
Bordetella avium, the causing agent of bordetellosis, a highly contagious infection of the respiratory tract in young poultry, causes significant losses in poultry farming throughout the world. Wildlife birds can be a reservoir of various pathogens that infect farm animals. For this reason the studies were conducted to estimate the prevalence of Bordetella avium in wildlife birds in Poland. Tracheal swab samples were collected from 650 birds representing 27 species. The bacterial DNA was isolated directly from the swabs and screened for Bordetella avium by TaqMan real-time PCR...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28523489/occurrence-of-ornithonyssus-sylviarum-in-pet-birds-from-the-district-of-set%C3%A3%C2%BAbal-portugal
#20
Helga Waap, Diana Paulino, Rita Cardoso
Ornithonyssus sylviarum is a blood-feeding ectoparasite of birds and the most serious pest in poultry farms in North America. Although the mites are typically adapted to temperate climates, information on this mite in Europe is sparse, and Dermanyssus gallinae is considered to be the only mite impacting the poultry industry. The present study reports the occurrence of O. sylviarum in pet birds in Portugal. Mites were collected directly from birds and with traps placed in cages and nests at 20 different sampling places belonging to 6 municipalities in the district of Setúbal...
July 2017: Parasitology Research
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