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Biomedical subjects

M H Lamont

Publications and source records attributed to M H Lamont.

7 recordsLinked to original sources
PubMed1995

Delayed neuropathy in pigs induced by isofenphos.

In 1990 an outbreak of ataxia occurred in over 700 pigs in the north of England. Epidemiological studies demonstrated that the disorder was associated with the consumption of feed from a particular supplier and that one component (wheat screenings) was common to the batch of feed with which the ataxia was associated. An analysis of the feed demonstrated the presence of an organophosphorus pesticide, later identified as isofenphos, a pesticide not approved for use in the United Kingdom. The wheat screenings had been imported from France and the warehouse in which they had been stored was contaminated with isofenphos, which is approved for restricted use in France. Isofenphos is known to cause delayed neuropathy. The dose to which the pigs were theoretically exposed would be expected to have resulted in neuropathy (manifested as ataxia).

Acetylcholinesterase↗
PubMed1987

Retarded growth rate and delayed onset of egg production associated with spirochaete infection in pullets.

Retarded growth rates and delayed onset of egg production were recorded in 22-week-old pullets reared on deep litter and with indirect contact with pigs. Birds reared in cages or transferred to cages were unaffected. Spirochaetes were isolated and identified from the intestines of the pullets reared on deep litter but not from those reared in cages. Birds kept solely on deep litter were more severely affected, with 24 per cent immature birds and 10 per cent mortality compared with those transferred from deep litter to cages where no mortality was recorded but 15 to 22 per cent were found to be immature. The histopathological changes are described and the significance of the findings is discussed.

Animals↗
PubMed1980

Streptococcal meningitis in pigs: results of a five-year survey.

Information about new outbreaks of streptococcal meningitis in pigs has been collected since the disease was first recognised in the United Kingdom in late 1973. The apparent spread of the disease across the country is illustrated. Factors affecting the age distribution of the disease and the dissemination of the infection are also discussed.

Animals↗