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Article published the September 21, 2022
Infectious laryngotracheitis (ILT) caused by infectious laryngotracheitis virus (ILTV), is a highly contagious upper respiratory disease of poultry causing great economic losses to the chicken industry. New strains have been reported to emerge due to recombination of vaccine and field strains, some of them replacing less virulent strains because of their high virulence. The present study aimed to ...
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Article published the August 30, 2022
Dust found in poultry housing is a complex substance most likely comprised of a mixture of excreta, feather, feed and bedding material. Exposure to poultry dust can impair the health of both poultry and poultry farmworkers as it serves as a medium for survival and spread of pathogenic microorganisms and inhalation of respirable particles and toxins (Just et al. 2009; Viegas et al. 2013). It has al ...
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Article published the August 23, 2022
Infectious laryngotracheitis (ILT), caused by Gallid herpesvirus type 1, is a highly contagious upper respiratory and conjunctival disease of poultry. The virus (ILTV) is thought to exit the host in respiratory aerosols and enter by inhalation of these. High levels of ILTV DNA have been detected in excreta, dust, blood or plasma and in various organs outside the respiratory tract; raising the poss ...
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Article published the October 21, 2021
Free-range layer pullets are typically reared indoors within Australia, but adult layers go outdoors which might cause poorer adaptation due to the mismatch between rearing and laying environments. Indoor enrichments may optimise physical development of pullets and subsequent welfare as adult free-range hens (Campbell et al., 2019). In the outdoor environment, hens may have greater opportunities f ...
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Article published the October 12, 2021
Method detailsSalmonella spp. cause fowl typhoid and pullorum diseases in poultry and are responsible for nontyphoidal Salmonella infection in humans. Prevention of Salmonella infection in chicken flocks is an important step in reducing salmonellosis outbreaks in humans. Vaccination with live attenuated vaccine of certain strains such as e.g. S. Enteritidis, S. Typhimurium and S. Gallinarum has be ...
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Article published the June 23, 2021
Haemorrhagic enteritis virus (HEV) is an immunosuppressive adenovirus that causes haemorrhagic enteritis in young turkey poults with increased incidence of secondary bacterial infections, such as colibacillosis (Pierson and Fitzgerald, 2013). Worldwide live vaccines propagated in cell culture or turkeys (crude spleen homogenates) are used to prevent the disease. In Australia, there is currently no ...
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Article published the June 22, 2021
I. INTRODUCTION Infectious laryngotracheitis (ILT) is an important respiratory disease of chickens caused by ILT virus (ILTV, Gallid herpesvirus 1) that infects the upper respiratory tract and conjunctiva resulting in high morbidity and sometimes mortality (García et al., 2013). Vaccination with live attenuated vaccines administered by eye drop is generally effective: however for commercial ...
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Article published the June 16, 2021
I. INTRODUCTIONField success of mass ILT vaccination in young meat chickens is often accompanied by reports of vaccine reactions, often rolling through the flock for some time, and even apparent vaccination failure with wild strain outbreaks in vaccinated flocks. This is in spite of laboratory challenge studies often describing good protection of vaccines against an artificial challenge with the f ...
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Article published the May 14, 2021
Infectious laryngotracheitis (ILT) is an ongoing problem in meat chickens in important production areas of Australia. In response to outbreaks, live vaccines are typically administered at 7-14 days of age in drinking water via nipple drinkers which may not provide optimal contact with susceptible tissues. The efficacy of vaccination is not routinely assessed. As part of a series of experiments inv ...
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Location:Armidale, New South Wales, Australia
Profile: Academic / scientific
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