LES MYCOPLASMOSES PORCINES

Swine mycoplasmoses.

Mycoplasma hyopneumoniae is the primary agent of enzootic pneumonia in pigs. The lung lesions, generally observed in young pigs, are characterised by a hyperplasia of the epithelial cells and an increased perivascular and peribronchiolar accumulation of mononuclear cells. Following M. hyopneumoniae infection, immune reactions are observed and resistance is induced in pigs. Laboratory diagnosis ...

Control of avian mycoplasmoses by vaccination.

Vaccination is an option for controlling Mycoplasma gallisepticum or M. synoviae when biosecurity measures fail to prevent the infection of poultry flocks with these mycoplasmas. Both killed vaccines (bacterins) and living vaccines are currently in commercial use. Bacterins usually contain an oil emulsion adjuvant and are administered by subcutaneous or intramuscular injection. They can reduce ...

Some pathological and epidemiological considerations of animal mycoplasmoses.

None of the presently known mycoplasmal respiratory diseases of animals offers a model system closely resembling chronic bronchitis or pulmonary emphysema. The only animal disease with clinical and pathological similarities to human emphysema is the emphysema seen in horses. This is a very interesting model and would probably be useful for clinical evaluation and manipulation, but it is not goi...

Les maladies causées par les anaérobies pathogènes sporulés chez les animaux domestiques

Les Rotations Et Les Quaternions

La construction du corps non commutatif H de quaternions est une variante plus compliquée de la construction du corps commutatif C de nombres complexes. Donc on commence en rappelant la construction de C à partir de R. Les nombres complexes s’écrivent a+ bi avec a, b ∈ R. Donc C est un espace vectoriel sur R de dimension 2 avec base {1, i}. La loi d’addition de C est celle que C possède en tant...