Abstract
Respiratory diseases in sheep are a multifactorial etiology syndrome, causing great economic losses. This study was carried out with the aim of establishing a bacteriological diagnosis of respiratory diseases in sheep, on the basis of lungs with macroscopic lesions taken from sheep slaughtered at the Blida abattoir. A total of 150 samples (swabs and lung parenchyma) from 75 Ouled Djellal sheep, aged six to twelve months old, with pulmonary lesions, were collected to determine possible correlations between the etiological agents and the type of lesion. Hepatization (or consolidation) was the main lesion observed (70%), preferentially localized on the right apical lobe (88% of the cases). This is a special form of pneumonia called atypical pneumonia. A varied microbial flora was isolated, alone or in association, namely bacteria with respiratory tropism as well as others of secondary infection. The bacteria most frequently isolated were γ-hemolytic streptococci (18%), Escherichia coli (17.5%), Micrococcus species (14.5%), and coagulase-negative staphylococci (10.5%); the large family of Enterobacteriaceae represented nearly 43% of the isolates. The pneumotropic bacteria (Mannheimia haemolytica and Pasteurella multocida) which count for 5.6% of the isolates, turned out to be correlated with the hepatization lesions. Key words: Mannheimia haemolytica, Pasteurella multocida, pneumonia, sheep, Algeria.
Highlights
Sheep farming in Algeria constitutes 50% of the agricultural gross domestic product
The pneumotropic bacteria (Mannheimia haemolytica and Pasteurella multocida) which count for 5.6% of the isolates, turned out to be correlated with the hepatization lesions
The study focused on sample "all comers" of Ouled Djellal sheep slaughtered at Blida abattoir (Algeria) from January 2009 to April 2010
Summary
Sheep farming in Algeria constitutes 50% of the agricultural gross domestic product. The sheep number has increased from 17.5 to 26.6 million head with an average annual increase of 4.4% over the ten-year period (2003 to 2013) (MADR, 2014). In 2003, it represented 25 to 30% of animal production and 10 to 15% of agricultural production. It provides more than 50% of the total meat needs of the country (Abdelguerfi and Ramdane, 2003). The rearing of grazing livestock in Mediterranean countries includes 13% of the world’s sheep and goats (Boutonnet, 1998). Respiratory diseases in sheep are among the most frequent pathologies, with heavy health and economic impacts.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
