Maedi-Visna: forma respiratoria en ovinos de cuatro meses de edad

  1. González, J. 1
  2. Delgado, L. 1
  3. Benavides, J. 1
  4. Muñoz, M. 1
  5. Garza, J.m. 1
  6. Pérez, V. 1
  7. Ferreras, M.c. 1
  8. García Marín, J.f. 1
  1. 1 Facultad de Veterinaria. Universidad de León
Book:
XXXII Jornadas Científicas y XI Jornadas Internacionales de la Sociedad de Ovinotecnia y Caprinotecnia: Mallorca 2007, 19, 20 y 21 de septiembre: producción ovina y caprina
  1. Abecia Martínez, Alfonso (coord.)
  2. Mª Jesús Alcalde Aldea (coord.)
  3. Josep Cifre Llompart (coord.)
  4. Aina Rigo Alemany (coord.)

Publisher: Conselleria d'Agricultura i Pesca ; Govern de les Illes Balears

ISBN: 978-84-690-7763-4

Year of publication: 2007

Pages: 263-265

Congress: Sociedad Española de Ovinotecnia y Caprinotecnia (SEOC). Jornadas (32. 2007. Mallorca)

Type: Conference paper

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Abstract

This work describes lesions compatibles with the respiratory form of Maedi-Visna in 20 sheeps between 3,5 and 4 month old, belonging to an Assaf flock, with a seropositive prevalence higher than 90%. An interstitial pneumonia was observed in the apical and the diaphragmatic lobes, with macrophages and some lymphocytes, with a diffuse o multifocal distribution, and also characterized with some lymphoid aggregates and follicles of different intensity depending on the animal. The presence of Maedi-Visna virus in the lesions was confirmed in 5 lambs by immunohistochemistry and by PCR. Seven of 20 lambs were seropositive. These features are important related with the presence of severe lesions and infection by Maedi-Visna virus in very young lambs.

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