Incidence of Avian Mycoplasmosis in the region of Batna, Eastern Algeria

Veterinary World 03/2011; 4(3). DOI: 10.5455/vetworld.2011.101-105
Source: DOAJ


Avian mycoplasmosis is infectious and contagious disease which affects chicken and turkey as well as many other species with many economics losses. The absence of data on avian mycoplasmosis in Algeria and the importance of the poultry breeding in Batna encouraged us to undertake the prevalence of the most pathogenic mycoplasmas in broiler and layer chickens in this area, Mycoplasma gallisepticum (MG). 143 Mycoplasmas were isolate from 237 samples, at a rate of 60.33%. MG was isolate at a rate of 21.67% (2.09% in layer hens and 19.58% in broiler chickens). The serological screening using of breedings showed a sensitivity of 83.10%. This study shows that mycoplasmosis and in particular MG infection, represent a serious problem in chickens in Algeria in the absence of hygiene conditions and vaccination especially. [Vet. World 2011; 4(3.000): 101-105]

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    • "In this present study, seasonal variation for prevalence of MS infection was noted, high prevalence in autumn and winter 50% and 40% respectively, similar results were reported in other different geographical conditions(Heleili et al,.2011, Sikder et al,. "
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    ABSTRACT: Mycoplasma synoviae (MS) is an important avian pathogen of poultry production, and a worldwide emergent infection, causing respiratory tract infection and infectious synovitis. The aim of the present study is to determine the incidence of MS infection in broiler breeder farms in Morocco, and analyze the relationship between risk factors and infection. The study was based on direct diagnosis using Real time PCR, and evaluation of risk factors such as: age of flocks, age of farms, season, zone of sampling, and biosecurity measures. In fact, MS infection was associated significantly with the age (P<0,001). The prevalence was highest (50%) in autumn, (40%) in winter and lowest (25%) in spring. MS infection was significantly associated with age of farms at 8 th week of age of flocks, and no significant difference was noted at 16 th week.The prevalence was recorded highest 50% at 8 th week, 75% at 16 th week in farm situated in zone with high number of sites of poultry production above 300 farms. This same trend was observed in farm with lack of biosecurity and hygiene measures.The results showed that MS infection and transmission was significantly associated with age of flocks, age of farms and highest without significant relationship with season, zone of sampling, and biosecurity measures. Copy Right, IJAR, 2014,. All rights reserved.
    Full-text · Article · Sep 2014 · International Journal of Advanced Research
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    • "Despite rapid growth of this industry, it is vulnerable to certain infectious agents (Sarkar et al., 2005). A number of microbial diseases are the major health hazards being faced by poultry birds and mycoplasmosis is of paramount important in this regard (Heleili et al., 2011). Mycoplasma gallisepticum (MG), M. synoviae (MS), M. meleagrides (MM) and M. iowae (MI) are four major pathogens that cause mycoplasmosis in poultry birds (Bradbury, 2001; Evans et al., 2005). "
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    ABSTRACT: This study aimed to determine the seroprevalence of Mycoplasma gallisepticum (MG) infection in the chicken population of Bhola district, Bangladesh, during the period from April 2011 to March 2012. A total of 480 blood samples from chickens were collected from different upazilas (sub-districts) of Bhola district. The sampling considered the types of chicken (backyard and commercial layer), age groups (pullet, adult and old) and seasons (summer and winter). On the basis of the serum plate agglutination test, 55.83% (n=268/480) chickens were found positive for MG. The MG infection was higher (62.5%) in backyard chickens as compared to those being reared in commercial farming systems (53.61%). With respect to age groups, the prevalence was highest in pullets (60.63%) followed by adults (55.63%) and old chickens (51.25%). Moreover, chickens reared in winter showed higher prevalence of MG (60.42%) as compared to those reared in summer (51.25%). In conclusion, MG infection is prevalent in the chicken population of Bhola district, Bangladesh. Appropriate strategies should be taken for successful prevention and control of this disease in Bangladesh.
    Full-text · Article · Feb 2014
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    ABSTRACT: Isolation of Mycoplasma gallisepticum (MG) was attempted from different organs including trachea, air sacs and lungs (n=27 for each organ) of commercial layer chickens. Out of all the organs examined, 18.51% trachea (n=5/27) and 7.41% air sacs (n=2/27) were found positive for MG isolates; whereas, no isolation was made from lungs. The isolates were identified by microbiological and biochemical tests i.e. change in the color (red to orange) and turbidity of broth in addition to the typical colony characteristics (fried egg shaped colonies) of MG on PPLO (pleuropneumonia like organism) agar. Isolates were purified and sub-cultured in PPLO broth and pathogenicity of MG was observed in chicken embryos on the basis of mortality pattern. Gross pathological lesions in inoculated chicken embryos included oedema, stunted growth and hemorrhagic embryos. In second trial, antigen-antibody complex was inoculated in 7-days old (n=10) embryonated eggs to observe the effect of the exogenous antibodies on the viability of MG in chicken embryos. Results showed that simultaneous administration of anti-MG antibodies along with MG antigen failed to neutralize the antigen inside the embryonated chicken eggs.
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