The Corynebacterium pyogenes infection of cattle. 2. Tenacity of Corynebacterium pyogenes]

Some common agents were tested for their effectiveness against Corynebacterium pyogenes. The pathogen proved most susceptable to Wofasteril. All germs were killed within ten minutes by a 0.005% solution. Equally good action was recorded from all the other tested agents as well (lactic acid, Lugol's solution, formalin, cupric sulphate, alcohol, and aethacridine. Other studies were conducted with the view to testing the survival capacity of Corynebacterium pyogenes in different media and storage conditions. The pathogen survived three months in routine media and mastitis secretion at room temperature. Regrowth of 38 in 50 strains took place after nine months of refrigerator storage in slanting blood agar tubes with paraffin plugs. Germs sampled from mastitis secretion and stored in a refrigerator were cultivable even after one year had elapsed. The detectability rate of Corynebacterium pyogenes did not change over months by storage of wound infection material at 12 degrees C below zero. The pathogen remained detectable five days from artificial contamination of cattle skin.     

Corynebacterium pyogenes mastitis among heifer calves.

In August 1975 an outbreak of C pyogenes mastitis occurred involving 18 heifer calves at the National Institute for Research in Dairying. This paper describes the outbreak which affected animals varying in age from five to 22 months. Fourteen of the cases (77%) were among calves less than 10 months old. The advisability of using fly control measures among young stock in the summer months is discussed.     

化脓棒状杆菌的分离与鉴定

北京动物园的2头斑羚和1头岩羊相继发病死亡。剖检发现肺部均有淤血和化脓灶。经取其肺组织作细菌培养,均分离到纯粹的杆菌。经细菌形态、培养特性和生化特性分析,鉴定为化脓棒状杆菌。     

化脓棒状杆菌的分离与坚定

北京动物园的2头斑羚和1头岩羊相继发病死亡。剖检发现肺部均有淤血和化脓灶。经取其肺组织作细菌培养,均分离到纯粹的杆菌。经细菌形态、培养特性和生化特性分析,鉴定为化脓棒状杆菌。     

Acute lameness in sheep caused Corynebacterium pyogenes

Abstract

Extract

Feild outbreaks of acute lameness in sheep in New Zealand are usually attributed to contagious footrot (Fusiformis nodosus) (Beveridge, 1941 Beveridge, W. I. B. 1941. Bull. Counc. Sci. indusir. Res. Aust., 140 [Google Scholar]), foot abscess (Sphaerophorus necrophorus) (Gregory, 1939 Gregory, T. S. 1939. Aust. vet. J., 15: 160–160.  [Google Scholar]), or so-called “nutritional scald” Occasionally Erysipelothrix rhusio pathiae is also responsible (Whitten, 1951 Whitten, L. K. 1951. Aust. vet. J., 28: 6–6.  [Google Scholar]).     

Feline pyothorax caused by a Borrelia-like organism and Corynebacterium pyogenes.

A 2-year-old, neutered, male cat was euthanatized because of difficult repiration and inability to rise. Necropsy revealed pyothorax. Corynebacterium pyogenes was grown from the purulent thoracic exudate. A Borrelia-like microorganism was demonstrated in the exudate, using phase-contrast microscopy.     

The Corynebacterium pyogenes infection in cattle. 1. Incidence of the pathogen]

Reported are the incidence of Corynebacterium pyogenes together with different pathological changes as well as the existence of latent Corynebacterium pyogenes infections and their widespread occurrence. Corynebacterium pyogenes was established from 609 in 2,130 samples of pathological processes, accounting for 28.6%. The pathogen was cultivated from various processes, including enlarged tail lymph nodes (61.1%), tail phlegmons (56.3%), abscesses (49.1%), epiphysiolyses (45.2%), liver abscesses (31.8%), panaritia at beginning of fattening (20.5%), aborted foetuses (14.9%), foetal membranes in cases of incarcerated placenta (12.0%), and panaritia on end of fattening (3.4%). The same pathogenic microorganism was recorded from nine per cent of apparently intact heifer udders, before pasturing. Corynebacterium pyogenes was cultivated also from nasal mucous membrane (8.4%) and retropharyngeal lymph nodes (37.2%). The highest detection rate was 71.6%, obtained from the tonsils.