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R A Hogg

Publications and source records attributed to R A Hogg.

13 recordsLinked to original sources
PubMed2002

Suspected botulism in dairy cows and its implications for the safety of human food.

A large outbreak of suspected botulism occurred on a dairy farm. The affected animals were listless and showed signs ranging from hindlimb unsteadiness to lateral recumbency, although the most common presentation was sternal recumbency with an apparent hindlimb weakness when stimulated to rise. Postmortem examinations revealed no conclusive gross pathology or histopathology. The affected cattle were found to have neutrophilia and hyperglycaemia with no other consistent haematological or biochemical abnormalities. The combination of clinical signs, disease epidemiology and the ruling out of other differential diagnoses strongly supported a diagnosis of unconfirmed botulism; however, the source of toxin was not demonstrated. Botulism is a severe disease in human beings and there are uncertainties about the pharmacokinetics and pharmacodynamics of Clostridium botulinum toxins. In such circumstances, a precautionary approach to food safety is essential. Restrictions were placed on the movement of livestock and sale of milk from the farm premises until 14 days after the onset of the last clinical case.

Agriculture↗
PubMed1990

Suspected botulism in cattle associated with poultry litter.

Botulism was diagnosed clinically in grazing cattle on three closely sited dairy farms. The evidence suggests that the source of the toxin was poultry carcases containing types C and D Clostridium botulinum. These organism were also found in the alimentary tract of affected animals. Silage is suspected as having acted as a vehicle for the organisms and, or, toxins in cases which occurred later in housed cattle on one of the farms.

Animal Husbandry↗
PubMed1986

Evidence for the presence of avian paramyxovirus type 1 in feral pigeons in England and Wales.

During the period July 1983 to June 1985, 76 submissions of material from feral pigeons were received. Five separate submissions resulted in the isolation of an avian paramyxovirus type 1 (A/PMV-1) variant indistinguishable from the virus responsible for the 1058 disease outbreaks confirmed in racing pigeons up to the end of 1984. In addition 11 separate submissions of pigeon sera had haemagglutination inhibition titres of log(2)4 or greater to A/PMV-1 antigen. Feral pigeons from six sites widely distributed throughout England had evidence of A/PMV-1 infection.

Animals↗