LEPTOSPIROSIS PORCINA PDF

Puede estar presente en la orina de ciertos animales como roedores, perros, vacas, cerdos, caballos y animales silvestres. Hay dos especies principales: L. El cerdo puede infectarse con cualquiera de estos serotipos. Las ratas silvestres y domesticas son los principales reservorios del germen en la naturaleza. El microbio puede sobrevivir y hasta reproducirse por mucho tiempo en aguas estancadas contaminadas con orina de animales enfermos o portadores. El contagio puede establecerse al consumir alimentos y agua de bebida contaminados con orina de animales enfermos, convalecientes, portadores o reservorios.

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Si consideramos una granja de 1. Por ejemplo en la serovariedad Bratislava se distinguen tres genotipos: B1, B2a y B2b, que como veremos posteriormente tiene distinto rango de hospedadores y diferente patogenicidad.

Tabla 1: especies, serogrupos y serovariedades de leptospiras de mayor importancia en ganado porcino. Como ya se ha citado anteriormente, se han descrito tres genotipos y cada uno de ellos presenta un espectro de hospedadores de mantenimiento diferente. Al igual que la MAT, no diferencia entre animales vacunados o infectados.

Se consideran bastante eficaces, pero en el caso de la serovariedades Bratislava se han realizado pocos ensayos de eficacia. UU, Alemania, Vietnam y Brasil. Sin embargo, en el caso de Bratislava los animales pueden ser portadores y no tener anticuerpos detectables.

Por ello, es recomendable eliminar posibles portadores tratando a estos animales con estreptomicina durante la cuarentena. Hay que establecer un buen programa de control de roedores, ya que estos son reservorios de diferentes serovariedades, principalmente Icterohaemorrhagiae. Las leptospiras pueden sobrevivir en agua sin tratar durante largos periodos.

The effects of the periodical use of in-feed chlortetracycline on the reproductive performance of gilts and sows of a commercial pig with a clinical history of clinical and subclinical viral and bacterial infections. Reprod Dom Anim, Leptospira interrogans serovars Bratislava and Muenchen animal infections: implications for epidemiology and control. Microbiol, Detection of leptospires in urine by PCR for early diagnosis of leptospirosis. J Clin Microbiol, Isolation of Leptospira interrogans serovars bratislava from stillborn and weak pigs in Iowa.

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Vet Microbiol, Dikken H y Kmety E. Serological typing methods of leptospires. Method Microbiol, Leptospires in pig urogenital tracts and fetuses. Vet Rec, Prevalence of Leptospira infection in aborted pigs in Northern Ireland. Isolation of leptospiras from the genital tract and kidneys of aborted sows. Boars as carriers of leptospiras of the Australis serogroup on farms with an abortion problem.

Isolation of Leptospira interrogans serovar bratislava from sows in Iowa. Am J Vet Res, An experimental study with a Leptospira interogans serovar bratislava vaccine.

Ellis WA. Disease of swine. Iowa University Press. En: Manual of standards for diagnostic test and vaccines. Office International de Epizooties O. Effect of vaccination with a bacterin containing Leptospira interrogans serovar bratislava on the breeding performance of swine herds. Leptospira 1: Introduction and pathogenesis. Pig Topics. Leptospira 2: Clinical signs and lesions. Leptospira 3: Clinical and laboratory diagnosis—I.

Leptospira 4: Clinical and laboratory diagnosis—II. Detection of seven species of pathogenic leptospires by PCR using two sets of primers.

J Gen Microbiol, Prevalence and clinical significance of leptospiral antibodies in pigs in England. Isolation of Leptospira interrogans serovar muenchen from a sow with a history of abortion. Hayden J. Leptospirosis control in UK pigs. Hayden H. Leptospira 8: Overall view of leptospira from the UK. International Pig Topics. Kingscote BF. Leptospirosis outbreak in a piggery in southern Alberta. Can Vet J, Leptospirosis in pigs. Vet Ann, 23rd ed.

Lisboa N. Leptospira 6: Treatment and control. Leptospirosis in wild and domestic carnivores in natural areas in Andalusia, Spain. Porcine leptospirosis in Iowa. J Vet Diagn Invest, 2: A seroepidemiological survey of Leptospira bratislava infections in Danish sow herds. Prev Vet Med, Differentiation of pathogenic and non-pathogenic leptospires by means of the polymerase chain reaction.

Anaporc, Prevalence of antibodies to different Leptospira interrogans serovars in pigs on large farms. J Vet Med B, Prescott J. Treatment of leptospirosis. Cornell Vet, 7. Influence of leptospirosis on reproductive performance of sows in Brazil. Theriogenology, Rocha T. Isolation of Leptospira interrogans serovar mozdok from aborted swine fetuses in Portugal.

The isolation of Leptospira interrogans serovar bratislava from a pig in Germany. Stein T. Leptospira 7: Production and economic effects. Taylor DJ. Leptospira 5: Prevalence of leptospiral infection in pigs.

Thiermann AB. Leptospirosis: current developments and trends. Vannier P. Infectious causes of abortion in swine. Rep Dom Anim, A serological survey of leptospirosis in Prince Edward Island swine herds and its association with infertility. Can J Vet Res, Me gusta:.

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