B. Nielsen et al., A new Salmonella surveillance and control programme in Danish pig herds and slaughterhouses, BERL MUN TI, 114(9-10), 2001, pp. 323-326
Citations number
9
Categorie Soggetti
Veterinary Medicine/Animal Health
Journal title
BERLINER UND MUNCHENER TIERARZTLICHE WOCHENSCHRIFT
The Danish Salmonella Surveillance and Control Programme for pigs operates
at all stages of the production chain and has been applied nationally since
1995. Due to the program the level of Salmonella in Danish pork has declin
ed from 3.5 % in 1993 to 0.7 % in the year 2000. Simultaneously, the number
of human cases with salmonellosis due to pork has declined from approximat
ely 1,144 in 1993 to 166 in 2000. In year 2001, the programme has been impr
oved at a number of stages. A new classification scheme for the serological
surveillance of finisher herds has been developed. The individual test cut
-off in the mix-ELISA has been reduced to 20 OD %. Only herds producing mor
e than 200 finishers/year are sampled. Based on the serological result from
the last 3 months a new weighted salmonella index is calculated.
The Danish Bacon and Meat Council has agreed on a new stricter penalty syst
em. Level 2 and 3 herds get a penalty of 2 % and 4 % of the value per slaug
hter carcass, respectively. A new method of Salmonella testing on carcasses
has been introduced; 5 carcasses per slaughter day are swabbed at 3 define
d areas at 100 cm(2) for each sample. This method is more sensitive than th
e one used previously,
Herds infected with multiresistant Salmonella Typhimurium DT104 have to fol
low special restrictions. These include a requirement for a herd interventi
on plan, restriction on livestock trade, and a requirement for special slur
ry handling. Carcasses from DT 104 herds must be heat-treated or decontamin
ated with hot water.