Salmonella Isolated from Animals and Feedstuffs in Sweden during 1983–1987

Abstract

This survey describes the frequency of Salmonella in animals and feedstuffs isolated in Sweden 1983–1987. Since 1949 National Veterinary Institute (NVI) has published such reports every fifth year. During the period of this report 760 outbreaks of Salmonella were reported in animals. This includes both domestic and wild animals. The corresponding figure for the previous period was 1266 outbreaks. 56 different serovariants were reported, 17 of these were new to Sweden. In cattle and swine there were a decrease of outbreaks. In poultry 86 outbreaks were reported, compared with 220 outbreaks during the previous five-year periode.

Swedish feed producing plants are checked both voluntary and compulsory, for the presence of Salmonella in raw materials, scrape and dust samples and compound feed. During 1983–1987 a total of 236 strains at Salmonella were isolated. This is the lowest incidence found during the last 15 years.

All consignments of feedstuffs of animal origin intended for import to Sweden has to be examined for the presence of Salmonella. During 1983–1987 8.6% of the consignments were positive for Salmonella and were thus not allowed to be used in Sweden.

Sammanfattning

Sedan 1949 har Statens Veterinärmedicinska Anstalt (SVA) publicerat 5 års-rapporter. Salmonella-isoleringar angående fall från djur och fodermedel. Under 1983–1987 har 760 salmonellautbrott rapporterats. Detta innefattar både vilda och tama djur. Föregående period var motsvarende siffra 1266 utbrott. Av 56 rapporterade serovarianter är 17 nya för Sverige. Jämfört med föregående rapporteringsperiod har antalet utbrott minskat på nöt och svin. På fjäderfä är 86 utbrott rapporterade, vilket är en extremt läg siffra jämfort med 220 under föregående rapporteringsperiod.

Svenska foderfabriker kontrolleras både frivilligt och obligatoriskt, på förekomst av Salmonella i råvaror, skrap- och dammprov samt i färdigt foder. Under perioden 1983-1987 påvisades 236 salmonellastammar. Detta är den längsta frekvensen under de senaste femton åren.

Alla fodervaror av animalt ursprung avsedda för import till Sverige kontrolleras på förekomst av Salmonella. Under perioden 1983–1987 var 8.6% av importerna salmonellapositiva och tilläts därför ej komma in i Sverige.