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2022 ◽  
Vol 2022 ◽  
pp. 1-12
Author(s):  
Melissa A. Ramtahal ◽  
Anou M. Somboro ◽  
Daniel G. Amoako ◽  
Akebe L. K. Abia ◽  
Keith Perrett ◽  
...  

The presence of the zoonotic pathogen Salmonella in the food supply chain poses a serious public health threat. This study describes the prevalence, susceptibility profiles, virulence patterns, and clonality of Salmonella from a poultry flock monitored over six weeks, using the farm-to-fork approach. Salmonella was isolated using selective media and confirmed to the genus and species level by real-time polymerase chain reaction (RT-PCR) of the invA and iroB genes, respectively. Antimicrobial susceptibility profiles were determined using Vitek-2 and the Kirby–Bauer disk diffusion method against a panel of 21 antibiotics recommended by the World Health Organisation Advisory Group on Integrated Surveillance of Antimicrobial Resistance (WHO-AGISAR). Selected virulence genes were identified by conventional PCR, and clonality was determined using enterobacterial repetitive intergenic consensus PCR (ERIC-PCR). Salmonella was present in 32.1% of the samples: on the farm (30.9%), at the abattoir (0.6%), and during house decontamination (0.6%). A total of 210 isolates contained the invA and iroB genes. Litter, faeces, and carcass rinsate isolates were classified as resistant to cefuroxime (45.2%), cefoxitin (1.9%), chloramphenicol (1.9%), nitrofurantoin (0.4%), pefloxacin (11.4%), and azithromycin (11%). Multidrug resistance (MDR) was observed among 3.8% of the isolates. All wastewater and 72.4% of carcass rinsate isolates were fully susceptible. All isolates harboured the misL, orfL, pipD, stn, spiC, hilA, and sopB virulence genes, while pefA, spvA, spvB, and spvC were absent. In addition, fliC was only present among the wastewater isolates. Various ERIC-PCR patterns were observed throughout the continuum with different subtypes, indicating the unrelated spread of Salmonella. This study concluded that poultry and the poultry environment serve as reservoirs for resistant and pathogenic Salmonella. However, there was no evidence of transmission along the farm-to-fork continuum.


2021 ◽  
Vol 6 (1) ◽  
pp. 51-57
Author(s):  
Eris Nuraliev ◽  
Kaisar Kushaliev

The aim of the research is improving measures for the prevention of periodic colisepticaemia infection of hens in industrial poultry farming. To ensure reliable protection of the poultry flock and break the epizootological chain, an optimal scheme of therapeutic measures was developed for chickens of the Rhodonit 3, Hajseks Braun, Braun Nik crosses. Therapeutic measures were carried out in private farms as of causative agent of infection for industrial poultry farming. In the course of conducting an administrative control of private farms of entrepreneurs engaged in incubation, breeding and keeping in exercise pens chickens, guinea fowls, pheasants and turkeys in exercise pens, it was found that periodic mortality of birds from colisepticaemia was the result of violations or non-implementation of therapeutic and preventive measures. Past-mortem examination of non-incubated chickens, tur-keys, guinea fowls and pheasants revealed pathanatomical changes in liver, lungs, heart, and kidneys. In the ex-periment with colistin antibiotic use, of the polypeptide group, which is active in regard to colibacillosis, the flock of 126990 heads participated. With oral use, colistin is practically not absorbed, it is not exposed to digestive en-zymes, thus creating a high colistin antibacterial concentration in the intestine. In an experimental poultry farm, 30- and 60-days-old chickens were treated with the colistin AVZ antibiotic. The drug was prescribed at the rate of 1 liter of the antibiotic colistin AVZ per 4000 liters of drinking water. The colistin AVZ solution was prepared just before drinking and chickens had it during 2 hours after morning feeding for 7 days (the same procedure was repeated until the flock reached 60 days of age). Chickens were not given antibiotics of the controlled farm. After the antibiotic treatment, the safety of the flock was controlled on the daily basis. A Past-mortem examination was performed with a pathoanatomical diagnosis determination and subsequent laboratory test of the pathological material. The bird mortality in the experimental poultry farm was significantly less (949 heads for the entire period of the experiment) than that in the control group (6931 heads).


Author(s):  
W Hananeh ◽  
M Ababneh

Spotty liver disease is an acute bacterial disease that affects the poultry industry throughout the world. In this report, we discuss the first documented outbreak of the recently emerging disease, spotty liver disease, in a poultry flock in Jordan. The clinical history, pathological and molecular findings are described. The outbreak was characterised by recurrent mortalities that subsided with antibiotic treatments. Grossly, there were multiple pinpoint white foci distributed throughout the enlarged liver and less frequently throughout the spleen too. Histologically, the white foci represented areas of acute hepatocellular lytic necrosis and degeneration that were consistent with those of spotty liver disease. An end point polymerase chain reaction (PCR) assay targeting the glycerol kinase gene, coupled with sequencing, confirmed the pathological diagnosis. Continuous surveillance is needed to estimate the prevalence of this disease in Jordanian poultry flocks.


2020 ◽  
Vol 2 (1) ◽  
pp. 14-16
Author(s):  
Roshan Kumar Yadav ◽  
Rabindra Yadav

Poultry farming is integral part of agriculture in Nepal which accounts about 3.5% of total Gross Domestic Product (GDP). This review was done to study the population ,production (egg and meat) and distribution of poultry in Nepal. In order to meet the demand of poultry produce, the commercial poultry population has increased about more than double the last decade. The recent data of 2018/19 shows the total number of laying hens and ducks are 12.52 million and 0.19 million respectively whereas total chicks production of Broilers, Layers and kuroilers are 25-30(×106), 1.5-1.75(×106) and 2.5-3(×106) respectively with breeder stock population of 2 million birds. Likewise, the total hen egg and duck egg are 1534.68 million and 15 million respectively. Also the total chicken and duck meat is 62899 MT and 353 MT respectively. In Nepal, the national poultry flock includes chickens, ducks, pigeons and other birds that are kept in different production system. Chitwan, Kathmandu and Kaski are major districts with higher number of poultry farms followed by rural people which is under the free range system and low input. The higher number of poultry is concentrated in hill region followed by terai and mountain region. Conversely, the population of duck is higher in terai followed by hill and mountain region.


2020 ◽  
Vol 9 (20) ◽  
Author(s):  
Francesca Profeta ◽  
Elisabetta Di Giannatale ◽  
Massimiliano Orsini ◽  
Massimo Ancora ◽  
Camilla Smoglica ◽  
...  

Here, we report the complete genome sequence of Clostridium perfringens 2016TE7641_69, isolated from the intestine of a turkey reared in a conventional poultry flock located in central Italy, where animals were showing enteric disorders suggesting subclinical necrotic enteritis.


2020 ◽  
Vol 8 (2) ◽  
pp. 261 ◽  
Author(s):  
Valerie Wist ◽  
Marina Morach ◽  
Marianne Schneeberger ◽  
Nicole Cernela ◽  
Marc J.A. Stevens ◽  
...  

Food-producing animals may be a reservoir of vancomycin-resistant enterococci (VRE), potentially posing a threat to animal and public health. The aims of this study were to estimate the faecal carriage of VRE among healthy cattle (n = 362), pigs (n = 350), sheep (n = 218), and poultry (n = 102 flocks) in Switzerland, and to characterise phenotypic and genotypic traits of the isolates. VRE were isolated from caecum content of six bovine, and 12 porcine samples respectively, and from pooled faecal matter collected from 16 poultry flock samples. All isolates harboured vanA. Three different types of Tn1546-like elements carrying the vanA operon were identified. Conjugal transfer of vanA to human Enterococcus faecalis strain JH2-2 was observed for porcine isolates only. Resistance to tetracycline and erythromycin was frequent among the isolates. Our data show that VRE harbouring vanA are present in healthy food-producing animals. The vanA gene from porcine isolates was transferable to other enterococci and these isolates might play a role in the dissemination of VRE in the food production chain.


2019 ◽  
Author(s):  
C. Mathieu ◽  
A. Gonzalez ◽  
A. Garcia ◽  
M. Johow ◽  
C. Badia ◽  
...  

SUMMARYIn December of 2016, low pathogenic avian influenza (LPAI) caused by an H7N6 subtype was confirmed in a grow-out turkey farm located in Valparaiso Region, Chile. Depopulation of exposed animals, zoning, animal movement control and active surveillance were implemented to contain the outbreak. Two weeks later, a second turkey grow-out farm located 70 km north of the first site was also infected by H7N6 LPAI, which subsequently spilled over to one backyard poultry flock. The virus involved in the outbreak shared a close genetic relationship with viruses collected from Chilean aquatic birds’ viruses. The A/turkey/Chile/2017(H7N6) LPAI virus belonged to a native South American lineage. Based on the H7 and most of the internal genes phylogenies, these viruses were also closely related to the viruses that caused a highly pathogenic avian influenza outbreak in Chile in 2002. Results from this study help understand the regional dynamics of influenza outbreaks, highlighting the importance of local native viruses circulating in the natural reservoir hosts.


2019 ◽  
Vol 66 (2) ◽  
pp. 696-704
Author(s):  
Scott M. Reid ◽  
Ruth Manvell ◽  
James M. Seekings ◽  
Vanessa Ceeraz ◽  
Helen Errington ◽  
...  

Author(s):  
Manisha R. Sajnani ◽  
D. Sudarsanam ◽  
Subhash J. Jakhesara ◽  
Siddhardha Solosanc, ◽  
Chaitanya G. Joshi ◽  
...  

Respiratory diseases are the most common causes of death in a poultry flock. Knowledge of the avian respiratory system is essential for developing a health monitoring plan for a poultry flock, recognizing problems that may occur, and taking action to correct them. Recently, respiratory diseases in commercial broiler chicken flocks have increased in India and no significant cause has been identified till date. Viral populations are predominant in respiratory tract infections and they cause severe economic loss through decreased productivity. We performed shotgun sequencing approach to understand viruses associated with or causing respiratory infections (RI) in broilers. We report high quality sequencing reads, de novo assembled sequences, taxonomical as well as functional classifications of virome of the infected broiler birds.


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