Serological investigation of Mycoplasma synoviae infection in China from 2010 to 2015

Abstract

Mycoplasma synoviae can cause worldwide respiratory diseases, synovitis, or subclinical symptoms in poultry. M. synoviae infection occurs throughout the yr and causes significant economic losses, including increased mortality, condemnations, medication, and live production cost. In the present study, the seroprevalence of M. synoviae among 44,395 non-vaccinated chickens from 21 provinces in China from 2010 to 2015 was estimated using ELISA. The overall seroprevalence was 41.19%. Seropositive rates in different yr ranged between 24.70 and 57.20%; the highest seropositive rate was observed in 2010, and the lowest was observed in 2013. The prevalence rates varied greatly in different provinces from 5.10 to 100%. Of the 463 commercial flocks tested, 375 (80.99%) were positive for M. synoviae by ELISA. The seasonal distribution ranged between 26.83% (in October) and 53.98% (in July). An investigation of chickens according to age further showed that M. synoviae can infect chickens at any age. Our findings indicate that M. synoviae infection is very common in China and should prompt further research into its prevalence to develop effective control and prevention strategies.

Integrated Transcriptomic and Proteomic Analyses of the Interaction Between Chicken Synovial Fibroblasts and Mycoplasma synoviae

“…MS is a major bacterial pathogen affecting the poultry industry worldwide with infections incurring enormous economic losses (Kreizinger et al, 2017;Sun et al, 2017;Xue et al, 2017;Kursa et al, 2019). Clinical signs of MS infection include infectious synovitis, primarily of the hock joints and foot pads (Kleven et al, 1975).…”

Investigation of Mycoplasma Synoviae Seroprevalence in Broiler Breeder Farms in South Bačka Region

“…Seroprevalence in China varied in diff erent provinces from 5.10% to 100%. Commercial vaccine is not yet available in China, so the authors concluded that detected antibodies originated from the natural infection (Xue et al, 2017). In Serbia, the situation in view of the availability of vaccine against Ms is the same as the one in China, so our results indicated seroconversion following natural infection as well.…”

“…Since Ms can be transmitted vertically and horizontally (Stipkovits and Kempf, 1996), it can cause infection in broilers with increased mortality, feed conversion and condemnation. (Xue et al, 2017;Moreira et al, 2015). Feberwee et al (2008) reported lower seroprevalence in meat rearing breeder stock (6%) than in meat-type grandparents stock (10%), due to reduced risk of vertical transmission by elimination of Ms-positive fl ocks.…”

“…Th e use of medications to treat Ms infection increases the production costs. Although vaccines and medication can reduce clinical signs and economic impact of Ms infection, medication cannot completely eliminate mycoplasma infections (Whithear, 1996;Kleven 2003a) and vaccines are not yet available in all countries, such as China and Portugal (Moreira et al, 2015;Xue et al, 2017) as well as Serbia. Ms are capable of establishing lifelong infections in poultry, and that can be one of the reasons for inability to eradicate Ms in commercial poultry fl ocks, especially in breeders that stay a long period in rearing and production sites.…”

Seroprevalence and prevalence of Mycoplasma synoviae in laying hens and broiler breeders in Spain

“…In addition, in layers, M. synoviae can induce shell abnormalities, causing a decrease in egg quality and production, increasing the operating costs ( Catania et al., 2010 ; Landman, 2014 ). Avian mycoplasmosis may be transmitted either vertically by broiler breeders through eggs ( Xue et al., 2017 ) or horizontally, often by direct contact between ill and unaffected carriers ( Marois et al., 2000 ). Moreover, Mycoplasma can remain in the flock constantly as forms ( Nascimiento et al., 2005 ).…”