Current bacterial taxonomy is mostly based on phenotypic criteria, which may yield misleading interpretations in classification and identification. As a result, bacteria not closely related may be grouped together as a genus or species. For pathogenic bacteria, incorrect classification or misidentification could be disastrous. There is therefore an urgent need for appropriate methodologies to c...

Bacteria of the avian [Pasteurella haemolytica]-'Actinobacillus salpingitidis' complex have been associated with different pathological conditions in birds, among which salpingitis and peritonitis in chickens of layer type seem to dominate. The aim of this study was to classify these bacteria by comparison of 37 strains tentatively classified as biovars of the avian [P. haemolytica]-'A. salping...

Sığırların solunum sistemi hastalığı stres, viral, bakteriyel, çevresel ve hayvana ait faktörleri kapsayan multifaktöriyel sebeplerden oluşabilmektedir. Enfeksiyon etkenlerinden viral etkenleri Herpes virüs-1, Parainflüenza virüs 3, Bovine respiratuar sinsityal virüs, diyare oluştururken, bakteriyel Mannheimia haemolytica, Pasteurella multocida, Histophilus somni Mycoplasma bovis oluşturmaktadı...

AIM This study was aimed to detect Mannheimia haemolytica in lung tissues of sheep and from a bacterial culture. INTRODUCTION M. haemolytica is one of the most important and well-established etiological agents of pneumonia in sheep and other ruminants throughout the world. Accurate diagnosis of M. haemolytica primarily relies on bacteriological examination, biochemical characteristics and, bi...

Mannheimia haemolytica (previously known as Pasteurella haemolytica) is a weakly hemolytic, gram-negative coccobacillus that is an opportunistic pathogen of cattle, sheep and other ruminants. In stressed, immunocompromised animals, the organism causes a fibrinous, necrotic pneumonia, commonly called "shipping fever". In the United States, economic losses due to shipping fever pneumonia surpass ...

Respiratory infections which commonly occur in sheep and goats often result from adverse physical and physiological stress combined with viral and bacterial infections. Inevitably, Pasteurella haemolytica pneumonia occurs as a result of these interactions. In this review, we present recent advances in research on the complex etiology of pneumonia involving P. haemolytica. Initially stress, indu...

Bovine respiratory disease (BRD) continues to greatly affect beef, dairy, and veal production systems. Vaccination against the bacteria involved is common, yet questions remain regarding efficacy. The purpose of this review was evaluate evidence for effects vaccinating United States or Canadian calves Mannheimia haemolytica, Pasteurella multocida, Histophilus somni on BRD-related morbidity, mor...

We conducted field and laboratory experiments to evaluate whether treating pregnant bighorn ewes with a combination of an experimental Pasteurella trehalosi and Mannheimia haemolytica (formerly P. haemolytica) vaccine and a commercially-available bovine P. multocida and M. haemolytica vaccine would increase lamb survival following a pneumonia epidemic. Three free-ranging bighorn herds affected ...