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Biomedical subjects

J Shreeve

Publications and source records attributed to J Shreeve.

7 recordsLinked to original sources
PubMed1979

Diagnostic aspects of cerebrocortical necrosis.

Specimens from cattle and sheep suspected of having cerebrocortical necrosis (CCN) were studied. Rumenal contents were examined for thiaminase-producing bacteria. Thiaminase activity was assessed in rumenal contents. The thiamine concentration of liver, brain and heart was determined and erythrocyte transketolase assessed. Diagnosis in each case, whether positive or negative for CCN, was decided by histopathological examination. There was a substantial agreement between the biochemical findings and the histological diagnosis indicating that a provisional diagnosis may be made on clinical and biochemical data alone. The findings are discussed in relation to other diseases which have the same neuropathological features. Attempts to isolate thiaminase-producing bacteria, which may be implicated in the aetiology of CCN, were inconclusive.

Animals↗
PubMed1979

The experimental infection of calves with a British strain of Haemophilus somnus.

Intravenous inoculation of a British strain of Haemophilus somnus resulted either in fatal peracute or chronic forms of H somnus disease. Pleuritis, pericarditis and arthritis were prominent post mortem findings. Intratracheal inoculation led to severe cellulitis and abscess formation in the neck with acute suppurative bronchopneumonia in one calf, while in another, encapsulated abscesses and pleural adhesions were seen. Intraperitoneal inoculation resulted in fatal fibrinous peritonitis in one calf. The organism was readily recovered from the lesions except when overgrown by post mortem contaminants. Rising antibody titres were detected in two calves 12 days after inoculation by a micro-complement fixation test, and the organism was demonstrated in synovial fluid by an indirect fluorescent antibody test. No organisms were recovered from and no lesions were seen in the nervous tissues of the calves in contrast to studies of this disease in the USA.

Animals↗
PubMed1977

Incidence of salmonella infection in animals in England and Wales 1968--1974.

Of a total of 23,609 incidents of salmonella infection reported during the period 1968--74, 20,326 occurred in cattle, 1744 in poultry and other birds, 675 in sheep, 558 in pigs and 306 in other species of animals. Despite the large number of serotypes isolated (153), 88% of incidents were due to only two stereotypes: S. dublin (15,929 incidents of which 15,446 occurred in cattle ) and S. typhimurium (4842 incidents of which 3785 occurred in cattle and 732 in birds). S. choleraesuis was the third (314 incidents which with only 5 exceptions occurred in pigs) and S. abortusovis (243 incidents all in sheep) was the fourth most commonly isolated serotype. The following six serotypes were each recorded in more than 100 incidents: S. newport (177), S. agona (170), S. virchow (169), S. anatum (152), S. enteritidis (150) and S. montevideo (111). The other 143 serotypes accounted for only 5-8% of total incidents. The trends of annual incidence of salmonella infection in cattle, sheep, pigs, poultry and other birds during the 17-year period 1958-74 and the distribution of the main serotypes in the individual species of animals from 1968 to 1974 are discussed.

Animals↗