Phenotypic and antigenic variation of Mycoplasma Gallisepticum vaccine strains

Ferraz, Priscila N.; Danelli, Maria das Graças Miranda

doi:10.1590/s1517-83822003000300011

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…In different countries of the world, five types of live strain MG are available; F strain, K strain, MS-H strain, 6/85 and ts-11 but the use of these live vaccines are not permitted in all countries (N. M. Ferguson-Noel & Williams, 2015;Liu et al, 2001). Australia and U.S.A. was the first time originated TS-11 and 6/85 live strain vaccine of CRD (Ferraz & Danelli, 2003). A single dose of F-strain is helpful to protect birds against MG (Ley, 2003).…”

Section: Vaccination Of Mycoplasmamentioning

confidence: 99%

Mycoplasma gallisepticum Infection, A Perpetual Problem

Jelani¹,

Farhan²,

Asrar³

et al. 2023

RJVP

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I n various regions of the world, poultry meat consumption elevates day by day owing to being the cheapest source of animal protein and poultry meat is becoming the consumer's first choice (Hess et al., 2001;Marangoni et al., 2015). Chicken meat is very nutritious with low content of fat, with more desirable unsaturated fatty acid according to other meat (Cavani et al., 2009;Dal Bosco et al., 2022). The production of poultry meat is possible when the health of birds will be good and according to need the demand for poultry meat will be fulfilled. Common respiratory diseases in poultry birds like CRD, infectious bronchitis (IB), infectious laryngotracheitis (ILT) etc. are very harmful to the health of birds and causes low production and high loss in the economy (Mugunthan & Mani Chandra, 2021;

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Section: Vaccination Of Mycoplasmamentioning

confidence: 99%

Mycoplasma gallisepticum Infection, A Perpetual Problem

Jelani¹,

Farhan²,

Asrar³

et al. 2023

RJVP

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“…The F strain is highly virulent and immunogenic, but is responsible for post vaccination clinical outbreaks. The Ts-11 and 6/85 strain originated from Australia and U.S.A respectively (Ferraz and Danelli, 2003). Ts-11 and 6/85 are live vaccines and contain poorly transmitted strains which makes them safer vaccine than MG-F strain vaccine.…”

Section: Control Of Mycoplasmosismentioning

confidence: 99%

Mycoplasmosis in Poultry, a Perpetual Problem

Shoaib¹

2019

J microb biotech food sci

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Bacterial diseases are a huge concern for poultry farmers and cause huge economic losses to poultry industry every year. Various diseases can initiate respiratory signs in poultry, including mycoplasmosis. Mycoplasmosis is a major threat currently faced by poultry industry worldwide. In poultry main pathogenic species of Mycoplasma are Mycoplasma gallisepticum and Mycoplasma synoviae. Mycoplasma is a worldwide avian pathogen that causes immense losses in the poultry industry by decreasing eggs production, reducing growth and increased condemnation at slaughter houses. Mycoplasma is a wall-less bacterium that causes chronic respiratory disease in all types of chickens. Mycoplasmosis is an egg transmitted, hatchery disseminated and economically very important disease of chickens. Commonly used methods for diagnosis of Mycoplasma include isolation and identification of bacteria, several serological tests and molecular techniques. Closely located poultry farms, rearing of mixed avian species in close milieus, mixed commercial poultry farming and presence of wild birds in close proximity to poultry farms have made this disease very difficult to control. The review summarized the pathogenesis of Mycoplasma, associated risk factors, diagnostic tools and control measures. Best measures to control Mycoplasmosis include biosecurity, hygiene, good management, monitoring and removal of infected flocks, routine vaccination and farmer awareness. To reduce the risk of transmission of disease to other poultry populations, there should be continued monitoring of flocks for Mycoplasma.

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Effect of Dosage and Vaccination Route on Transmission of a Live Attenuated Mycoplasma gallisepticum Vaccine: A Broiler Model

2009

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Mycoplasma gallisepticum (MG) is an economically significant pathogen of poultry species. Among the table egg sector of the poultry industry, live attenuated strains of MG are commonly used to limit production losses associated with MG-induced disease. These vaccines, however, may be problematic to broiler- and turkey-related industries because of associated virulence; therefore, an understanding of the transmissibility of the live MG vaccines is of particular importance. In the present study, a broiler model addresses the effect of vaccine application route and dosage on the transmission of the MG vaccine FVAX-MG to commingled unvaccinated subjects for 7 wk postvaccination. Vaccinations occurred at 2 wk of age via eyedrop or spray application at 1 x (4 x 10(6) colony-forming units [cfu]), 10(-3) x (4 x 10(3) cfu), or 10(-6) x (4 cfu) of the manufacturer's recommended dosage, and subsequent transmission to unvaccinated subjects was measured. The serologic response to MG antigen and the presence of MG DNA indicated FVAX-MG transmission only within the 1 x FVAX-MG eyedrop treatment. Among no other treatment was transmission of FVAX-MG detected. The results of the present study demonstrate that the dosage and vaccination route may have direct implications on subsequent transmission of FVAX-MG.

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Phenotypic and antigenic variation of Mycoplasma Gallisepticum vaccine strains

Cited by 3 publications

References 23 publications

Mycoplasma gallisepticum Infection, A Perpetual Problem

Mycoplasma gallisepticum Infection, A Perpetual Problem

Mycoplasmosis in Poultry, a Perpetual Problem

Effect of Dosage and Vaccination Route on Transmission of a Live Attenuated Mycoplasma gallisepticum Vaccine: A Broiler Model

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