Resumen de Estudios hematológicos y patológicos comparativos de cerdos inoculados con un aislado de campo y el serotipo 5 ATCC de Actinobacillus pleuropneumoniae.
D. Muñoz, Antonio Ruiz Reyes, M. González, A. Islas, Norman Díaz, Manuel P. Quezada
An experimental inoculation of Actinobacillus pleuropneumoniae (App) was carried out with a field isolate and an ATCC serotype 5. Three groups of 15 pigs each were used. Group 1 (G 1) was the control group inoculated with sterile media, Group 2 was inoculated with the serotype 5 ATCC, and Group 3 (G3) was inoculated with a field isolate (418/07). The results showed statistically significant differences (P S 0.05) in the totalleukocytes count between Gl v/s G2 and G 1 v/s G3. The total macroscopic lung lesions scores were statistically different among the 3 groups (P S 0.05). However, statistical difference was found only between G 1 and G3 in the histopathologicallung lesions (P s 0.05). This work shows a clear difference in the hematological changes and the macroscopic and histopathological lesions between the serotype 5 ATCC and the field isolate. These facts suggest a higher virulence and pathogenicity of the national isolate. The serotypification of this App national isolate will be done in the near future.
