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Biomedical subjects

A C Rowland

Publications and source records attributed to A C Rowland.

At least 55 records · Page 3Linked to original sources

Rabbit mortality survey.

In a survey of mortality in 2224 rabbits of up to 12 weeks of age, drawn from 10 production units, neonatal mortality was important with 111 stillbirths and 175 deaths in the 1st week of life out of a total of 457 deaths in the whole survey. There was a low overall incidence of death from respiratory and enteric disease during the period of study.

Animals↗

Bacteriological and pathological studies of the "collapse syndrome" in suckled calves.

During the winter of 1971-72 faecal samples from 91 diarrhoeic calves, 25 of which were considered to be suffering from the "collapse syndrome" were examined bacteriologically. E coli of serotypes reported as having the ability to produce enterotoxins were isolated from most of the calves with the "collapse syndrome", but from only a few of the other diarrhoeic calves, as well as a few unaffected in-contact animals. On post mortem examination, abomasal dilatation was a characteristic finding in calves dying of the "collapse syndrome" but not of other diarrhoeic deaths. The significance of these findings is discussed.

Abomasum↗

Intestinal adenomatosis in the pig: a possible relationship with a haemorrhagic enteropathy.

An outbreak of a haemorrhagic enteropathy in a closed herd of pigs was followed by the appearance, in the same herd, of cases of intestinal adenomatosis. This paper now draws attention to similarties in the mucosal pathology which are present in the two conditions. The affected tissue showed substantial epithelial proliferation and retrospective electron microscopic studies of material from both these entities revealed the presence of bacteria of similar morphology within the cytoplasm of these epithelial cells.

Adenoma↗

The characterisation of Campylobacter sputorum subspecies mucosalis isolated from pigs.

A comparison is made between the recognised subspecies of Campylobacter sputorum isolated from humans and cattle and the previously unrecognised catalase negative vibrios isolated from porcine intestinal adenomatosis. The characters of the porcine strains warrant their inclusion within the species Campylobacter sputorum. Differentiation between all three is possible in the laboratory and we propose that, in addition to the recognised subspecies, sputorum and bubulus, the pig strains be accorded subspecies rank and called mucosalis. Other porcine strains characterised as C coli formed a heterogeneous group but could be differentiated from porcine C sputorum strains by their pigment and catalase production, sodium chloride tolerance, antigenic and a number of other characters.

Agglutination Tests↗