Description of an acute bovine pulmonary edema and emphysema outbreak in southwest cordoba, argentina
An acute bovine pulmonary edema and emphysema (ABPEE) outbreak observed in the southwest region of Cordoba province, Argentina is described. The outbreak occurred in spring 2004, in a cattle ranch located in Coronel Moldes, Departamento Río Cuarto, Argentina, under natural grazing conditions, involving Aberdeen Angus x Hereford crossed cows, ~3-5 years of age. The outbreak started after moving the animals from a range lot with scarce pasture, to different grassland with higher availability of the same forage, after a rainfall event. Mortality and lethality rates were 6.6 % and 55.5 %, respectively. Three days after arrival in the new grassland, one dead animal was found. On the next day, several animals suddenly showed respiratory distress with remarkable expiratory dyspnea. Major lesions at necropsy included distended (not collapsed) lungs, emphysema, and intense interstitial edema. These lesions were confirmed by histopathology, including type II hyperplasia and hyaline membranes. Successful, symptomatic treatment was given at condition onset to those cows with severe respiratory distress. It was concluded that the natural pasture on which cattle were grazing at outbreak start -mostly Cynodon dactylon and Cynodon hirsutus- could have caused this pathology.
| Main Authors: | , , , , , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias
2012
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| Online Access: | https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/1782 |
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