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Study on gross pulmonary lesions in lungs of slaughtered animals and their economic importance in Tigray, Ethiopia
Abstract
A cross-sectional epidemiological study on slaughtered cattle at Mekelle abattoir, Northern Ethiopia, was conducted from November 19, 2008 to February 21, 2009 to investigate the distribution and risk factors of pulmonary lesions. The pulmonary lesions and diseases were diagnosed on the basis of pathological findings. Out of the 1,148 slaughtered cattle examined, 990 (86.2%) had one or more lesions. The prevalence of pulmonary lesions in the slaughtered cattle varied among categories of the study variables. The most common lesions were congestion (38.5%), emphysema (36.3%), hydatidosis (18.3%), abscesses (7.1%) and verminous pneumonia (3.2%). The risk factors identified on statistical basis (p < 0.05) were fat in cattle in pulmonary congestion, old age (>7 years) and very lean cattle in pulmonary emphysema and pulmonary abscesses and young age (<7 years) in verminous pneumonia. A total of 990 lungs (86.2%) were condemned or partially trimmed due to pulmonary lesions with an economic loss of 7,920 Ethiopian Birrs (ET Birr). This loss was calculated from the mean retail local market price of cattle lung and the total number of lungs condemned during the study period. Annual economic lose due to lung condemnation, determined by considering annual slaughter rate of cattle and prevalence of lung lesions in the abattoir, was estimated to be 65,000 ET Birr (US$).
Keywords: Pulmonary lesions, Cattle, Abattoir, Economic loss, Ethiopia.
