<i>Mycoplasma synoviae</i>in the guinea‐fowl

Pascucci, S.; Maestrini, N.; Govoni, Stefano; Prati, Anny Carolina

doi:10.1080/03079457608418198

Cited by 19 publications

(5 citation statements)

References 7 publications

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“…Route of 50% intranasal-conjunctivalj 50% intraperitoneal intranasal-conjunctival administration It has been shown that the guinea-fowl is susceptible to all common and well-known viral diseases of gallinaceous birds (among others, Tanyi, 1974;Lage et al, 1974;Pascucci et al, 1976;Nedyalkov, 1977;Nedyalkov et al, 1979;Yakimov et al, 1979;Geneste, 1981;Gough & Spackman, 1981;Ibragimov & Trubitsin, 1989;Misciattelli et al, 1981;Misciatelli et al, 1982;Pascucci et al, 1982;Kirev et al, 1983;Kirev, 1984;Watanabe & Ohmi, 1983;Toshkov et al, 1984;Cowen et al, 1988;Kles et al, 1988;Brahem et al, 1992). Pancreatitis aetiologically attributed to adenoviruses was reported in 3 to 4-week-old guineafowl (Reece & Pass, 1986).…”

Section: Introductionmentioning

confidence: 99%

Pancreatitis caused by reovirus in guinea‐fowl

Tanyi

Glávits²,

Sályi³

et al. 1994

Avian Pathology

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SUMMARYPancreatitis caused by a reovirus was observed among 8-to 22-day-old guinea-fowls held under extensive conditions in groups of 10,000 birds. With the virus isolated from the affected birds the disease entity could be reproduced experimentally. Both the naturally affected and the experimentally infected birds showed depression, lack of appetite and weakness, followed by recumbency, opisthotonus and, occasionally, convulsions. A proportion of the survivors were retarded in growth and stunted. At the acute stage, the pancreas showed 2-to 5-fold enlargement and bright yellowish discoloration, was tense to the touch, and had haemorrhages and necroses both on its surface and within its substance. The main findings revealed by histopathological and electron microscopic examination included the degeneration and necrosis of secretory cells of the exocrine glands responsible for the secretion of digestive enzymes, and the intensive replication of viral particles in the cytoplasm of these cells. The subacute stage of the disease was characterized by an irreversible depletion of the glandular substance and reparative phenomena. The activity of amylase, trypsin, total protease and lipase significantly decreased in the infected birds' intestinal content; at the same time, in the injured pancreatic tissue the activity of these enzymes showed an increase. Hepatic deiodinase activity of the experimentally infected guinea-fowls underwent a significant decrease; parallel to that, serum T 4 level increased and serum T 3 concentration decreased.

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Section: Introductionmentioning

confidence: 99%

Pancreatitis caused by reovirus in guinea‐fowl

Tanyi

Glávits²,

Sályi³

et al. 1994

Avian Pathology

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“…Otherwise, although the proportion of embryos with M. synoviae infection could exceed 36%, there was no correspondingly high clinical incidence in broiler chickens of Chinese native breeds. It might suggest that, in addition to the potential of chickens to produce anti- M. synoviae antibodies [28] and virulence differences between M. synoviae isolates [29–31], maternal antibodies against M. synoviae could inhibit M. synoviae activity in vivo at early ages and the developmental window when chickens were negative for the M. synoviae antibody - might play a key role in M. synoviae reproduction in hosts. Therefore, improving maternal antibody levels in developing chickens and effectively controlling M. synoviae activity during the developmental window when chickens are negative for the M. synoviae antibody might an efficient strategy to prevent M. synoviae infection.…”

Section: Discussionmentioning

confidence: 99%

Epidemiological investigation of Mycoplasma Synoviae in native chicken breeds in China

et al. 2017

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Backgroud Mycoplasma synoviae (M. synoviae) is widely distributed around the world, and leads to serious economic losses in the world every year. Nevertheless, the incidence and epidemiology of M. synoviae infection in China have remained unclear.ResultsIn this study we demonstrate that over 9773 broiler chicken flocks in 16 Chinese provinces were affected by M. synoviae between 2010 and 2015. Our epidemiological study revealed that M. synoviae was widely prevalent in multi-aged Chinese native breeder chickens, and the prevalence of M. synoviae in embryos of breeders reached up to 16.29%. In addition, our data showed that chickens aged 14 days or younger carried simultaneously high levels of maternal antibody against M. synoviae and high M. synoviae infection (10%), and low M. synoviae antibody levels in breeders and high proportion of M. synoviae infection in embryos could increase the chances of incidence in the offspring. Finally, our results also indicated that 3- to 7-week-old chickens might be most the susceptible to M. synoviae and, therefore, might play a key role in the horizontal transmission of M. synoviae.ConclusionOur findings suggest that M. synoviae is widely circulating in Chinese native chickens, accordingly, effective control measures are urgently needed to control the spread.

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“…However, it cannot be ignored that this species could be a host of this agent. Pascucci et al (1976) reported natural sinovitis by Mycoplasma synoviae in Numida meleagris in Italy and there are researchers who consider its occurrence to be common in this poultry species (Friend & Franson 1999).…”

Section: Discussionmentioning

confidence: 99%

Occurrence and risk factors assessment associated with Mycoplasma gallisepticum (MG) infection in chickens in the semiarid region of Pernambuco, Brazil

Sá

Júnior

Vilela³

et al. 2015

Pesq. Vet. Bras.

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RESUMO.-[Ocorrência e fatores de riscos associados à infecção por Mycoplasma gallisepticum em galinhas na região Semiárida do estado de Pernambuco.] Objetivo do presente estudo foi avaliar a ocorrência de infecção porMycoplasma gallisepticum (MG) e os fatores de risco dessa doença em trezentas amostras de soro sanguíneo de galinhas domésticas em 23 propriedades da agricultura familiar na região semiárida do estado de Pernambuco, Brasil. Para a pesquisa de anticorpos contra Mycoplasma gallisepticum utilizou-se o Ensaio Imunoenzimático (ELISA). A aná-lise univariada (Qui-quadrado ou Exato de Fischer) seguida pela análise multivariada (Regressão Logística) foram utilizadas para avaliar os fatores de risco com duas variáveis: manejo e sanidade das aves. Foi detectada uma frequência de 53,33% (157/300) de aves soropositivas para MG com 100% de focos. Os fatores de risco confirmados na análi-se multivariada, neste estudo, foram a criação de outras espécies de aves na propriedade como Numida meleagris (OR=2,22; p=0,005) The aim of the present study was to assess the occurrence of Mycoplasma gallisepticum (MG) infection and risk factors of this disease in three hundred serum samples from on 23 familiar agricultural properties in the semiarid region of the state of Pernambuco, Brazil. ELI-SA was used to study antibodies anti-Mycoplasma gallisepticum. The univariate analysis (chi--squared test or Fischer's exact test) followed by multivariate analysis (logistic regression) were used to assess the risk factors with two variables: management and sanity of the poultry. It was detected a frequence of 53.33% (157/300) of the birds were positive for MG, with 100% foci. The risk factors confirmed by multivariate analysis, in the present study, were the presence of other poultry species on the property, including Numida meleagris (OR=2.22; p=0.005), parrots (OR=1.72; p=0.027), and of passerines (OR=1.88; p=0.007). These results showed that Mycoplasma gallisepticum infection is endemic among backyard poultry in the semiarid region of the state of Pernambuco. These birds could be a source of infection for other wild or domestic poultry. . This is the first report of the occurrence of avian mycoplasmosis in backyard poultry in the state of Pernambuco in northeastern Brazil. The risk factors identified should serve as a parameter for the health authorities to seek solutions related to controlling the disease.

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Mycoplasma synoviaein the guinea‐fowl

Cited by 19 publications

References 7 publications

Pancreatitis caused by reovirus in guinea‐fowl

Pancreatitis caused by reovirus in guinea‐fowl

Epidemiological investigation of Mycoplasma Synoviae in native chicken breeds in China

Occurrence and risk factors assessment associated with Mycoplasma gallisepticum (MG) infection in chickens in the semiarid region of Pernambuco, Brazil

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