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Presence of <i>Actinobacillus pleuropneumoniae, Streptococcus suis, Pasteurella multocida, Bordetella bronchiseptica, Haemophilus parasuis and Mycoplasma hyopneumoniae</i>in upper respiratory tract of swine in farms from Aguascalientes, Mexico

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Open Journal of Animal Sciences 2013年第2期3卷 132-137页

作者： Abraham Loera-Muro Francisco J. Avelar-González Víctor M. Loera-Muro Mario Jacques Alma L. Guerrero-Barrera Centro de Ciencias Básicas Universidad Autónoma de Aguascalientes Aguascalientes México Groupe de recherche sur les maladies infectieuses du porc Faculté de Médecine Vétérinaire Université de Montréal St-Hyacinthe Canada Laboratorio de Biología Celular y Tisular Departamento de Morfología Centro de Ciencias Básicas Universidad Autónoma de Aguascalientes Aguascalientes México

Respiratory diseases are one of the most important health problems in pig herds. The porcine respiratory disease complex (PRDC) is the term used to describe pneumonic diseases caused by multiple infectious agents that provoke weight loss in animals or death. In the PRDC multiple pathogens (bacteria and/or viruses) work in combination to induce this respiratory disease. Within this complex, Actinobacillus pleuropneumoniae, Streptococcus suis, Pasteurella multocida, Bordetella bronchiseptica, Haemophilus parasuis and Mycoplasma hyopneumoniae are the main bacterial pathogens involved in great economic losses to the swine industry. The aim of this work was to estimate the presence of A. pleuropneumoniae, S. suis, P. multocida, B. bronchiseptica, H. parasuis and M. hyopneumoniae in the upper respiratory tract of pigs in representative swine farms inAguascalientes,Mexico, using PCR technique. The study was performed in 14 swine farms. We obtained a total of 212 nasal swabs. Near 20% of samples were positive for A. pleuropneumoniae (located in the 79% of farms);17% were positive for S. suis (in 86% of farms), of these, 3% were S. suis serovar 2;30% were positive for H. parasuis (93% of farms);23% of the samples to P. multocida (in 79% of farms);and 19% to M. hyopneumoniae (in 64% of farms). B. bronchiseptica was not detected in this study. The results obtained show that bacterial pathogens of PRDC were present in the upper respiratory tract of pigs in all farms studied;therefore, these pathogens are widely disseminated in pig farms of Aguascalientes, Mexico.

关键词： Porcine Respiratory Disease Complex Actinobacillus pleuropneumoniae Streptococcus suis Pasteurella multocida Bordetella bronchiseptica Haemophilus parasuis Mycoplasma hyopneumoniae

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Current Status of <i>M. hyopneumoniae</i>in Pigs in Grenada, West Indies

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Open Journal of Veterinary Medicine 2017年第7期7卷 77-84页

作者： Traci M. Vogler Sachin Kumthekar Keshaw Tiwari Claude De Allie Ravindra Nath Sharma Department of Pathobiology School of Veterinary Medicine St. George’s University Grenada West Indies

Mycoplasma hyopneumoniae, cause of enzootic pneumonia is known for serious economic losses in pigs. The disease is prevalent all over the world. There is no published report on Mycoplasma hyopneumoniae incidence in Grenadian pigs. The aim of this study was to estimate seroprevalence of antibodies for Mycoplasma hyopneumoniae in non vaccinated pigs in Grenada. Sera were collected randomly from 459 pigs of all ages from all six parishes of Grenada. Sera were tested for antibodies to Mycoplasma hyopneumoniae using an indirect Enzyme Linked Immunosorbant Assay (ELISA) kit. Antibodies to Mycoplasma hyopneumoniae were found in 8.71% (95% CI: 0.0644 to 0.1167) pigs. The greatest percent of positives (62.5%) (95% CI: 0.4699 to 0.7582) were in youngest group 22.5% (95% CI: 0.1211 to 0.3771) in >2 year. Positive females were overrepresented compared to males by 3:1. This is the first report on the sero-prevalence of Mycoplasma hyopneumoniae in pigs from Grenada, West Indies.

关键词： Grenada Mycoplasma hyopneumoniae Pigs Seroprevalence

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The Prevalence of Mycoplasma hyopneumoniae in Commercial Suckling Pigs in Thailand

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World Journal of Vaccines 2012年第3期2卷 161-163页

作者： Alongkot Boonsoongnern Pichai Jirawattanapong Preeda Lertwatcharasarakul Sakukuna Phatthanakunanan Pariwat Poolperm Supanee Urairong Wichian Navasakuljinda Kitcha Urairong Faculty of Veterinary Medicine Kasetsart University Kamphaengsaen campus Nakonpathom Thailand Pfizer Animal Health (Thailand) Limited Bangkok Thailand

The aim of this study was to determine the prevalence of M. hyopneumoniae infection in suckling pigs. Nasal swabs were collected from 300 suckling pigs originating from five farrow-to-finishing farms. One farm had a confirmed PRDC problem (farm A) and four other farms previously had a PRDC problem (farms B, C, D and E). Thirty (30) lactating sows in parity 1, 2 and 3 were selected from each farm (Ten sows per parity). Two piglets from each sow were randomly sampled for nasal swab at 3 weeks of age. The samples were analyzed by the nested PCR technique. Forty five per cent (27/60) of nasal swabs from farm A were found positive. On the other hand, a total of 2.08 per cent were found positive (5/240) from farm B, C, D and E. The tendency of piglet infection per sow by parity showed that first parity had more prevalence than the second and the third parity (60%, 55%, 20%), respectively. We have found a correction between M. hyopneumoniae early infection in suckling pigs and a confirmed PRDC problem (farm A) as oppose to farms that did not have a PRDC problem. The strategies to prevent M. hyopneumoniae early infection are to maintain good lactation, antibiotic prevention program and early M. hyopneumoniae

关键词： Natural Infection M. hyopneumoniae Suckling Pig Nested PCR

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