Relación entre la excrecion de Coxiella burnetii en heces, leche y fluido vaginal al parto y la presencia de la bacteria en los cotiledones placentarios

• J. Tutusaus-Batle ^[1] ; F. López Gatius ^[1] ; I. García Isperto ^[1]
  1. [1] Universitat de Lleida

     Universitat de Lleida

     Lérida, España

     
• Localización: XV Jornadas sobre Producción Animal: 14 y 15 de mayo de 2013, Zaragoza / Jorge Hugo Calvo Lacosta (aut.), Isabel Casasús Pueyo (aut.), Margalida Joy Torrens (aut.), Javier Álvarez Rodríguez (aut.), Luis Varona Aguado (aut.), Begoña Panea Doblado (aut.), Carlos Calvete Margolles (aut.), Joaquín Balcells Teres (aut.), Vol. 2, 2013, ISBN 978-84-695-7684-7, págs. 819-821
• Idioma: español
• Títulos paralelos:
  • Relationship between Coxiella burnetii shedding in faeces, milk and vaginal fluid at parturition and the presence of bacterium in placental cotyledons
• Enlaces
  • Texto Completo Libro  1 (pdf)   2 (pdf) 
• Resumen

  • The aim of this study was to analyze the relationship between Coxiella burnetiiin the cotyledons at parturition and placenta retention, stillborns, C. burnetii seropositivity and shedding by other routes during days 171-177 of pregnancy and at parturition in dairy cows. Two herds in northeastern Spain provided 78 cows that were sampled at 171-177 days of pregnancy and at parturition. Samples of blood, faeces, milk, vaginal fluid, and cotyledons were collected for the specific antibodies detection in blood by indirect ELISA and C. burnetiiDNA detection by quantitative PCR in the remaining samples. The seroprevalence during pregnancy and % of PCR positive samples was 52.6% and 8.6%, respectively. All cows delivered at term. No significant links were found in the study by logistic regression between retained placenta, stillborn calves, C. burnetii seropositivity and shedding on days 171-177 of gestation with the presence of C. burnetii in cotyledons. However, according to the odds ratio, the probability to present positive PCR cotyledons at parturition is 10.3 times higher in shedding cows at parturition by other routes than non shedders in the same period (P = 0.005). In conclusion, C. burnetii shedding cows at parturition are more likely to have the bacterium in the cotyledons than non-shedders.