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Bulletin No. 19 - Fall 2004
Parasitology- No Category
KANORA A, MEISSONNIER E, DESTOMBES T, DAGORN D
Ascaris suum infection in slaughter pigs: pathological incidence and economical impacts in France
Proceedings of International Pig Veterinary Society 18th Congress, June 27-July 1, 2004, Hamburg, Germany, Volume 1, Page 241, Abstract No. 803.
A survey was conducted in 2002-03 to evaluate the incidence of liver lesions due to Ascaris suum infection in fattening pigs. The random survey was organized in six large slaughterhouses located in Brittany, the main region of pig production in France. Inspected animals were fattening pigs of which the body weight was from 100 to 110 Kg. In total 10,175 livers were observed with numbers varying from 486 to 2786 depending on each slaughterhouse. The incidences of livers with score 2 or 3 were dispatched between 15 % and 42 % by slaughterhouse and between 10 % and 65 % by pigs batch. Macroscopic and microscopic observations of recent and scar hepatic lesions confirmed the previous descriptions on Ascaris suum infection by different authors (2, 3, 4). They are easily explained because no routine deworming of fattening pigs is applied and the Ascaris infection is not controlled. The losses due to chronic hepatitis and microbial surinfections are considered as high if they are compared with the cost of 2 usual dewormings during the fattening period.
