tailieunhanh - Báo cáo thú y: "An assessment of soybeans and other vegetable proteins as source of salmonella contamination in pig production"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú yđề tài: An assessment of soybeans and other vegetable proteins as source of salmonella contamination in pig production. | Wierup and Hăggblom Acta Veterinaria Scandinavica 2010 52 15 http content 52 1 15 AVS ACTAVETERINARIA SCANDINAVICA RESEARCH Open Access An assessment of soybeans and other vegetable proteins as source of salmonella contamination in pig production Martin Wierup1 Per Haggblom2 Abstract Background The impact of salmonella contaminated feed ingredients on the risk for spreading salmonella to pigs was assessed in response to two incidences when salmonella was spread by feed from two feed mills to 78 swine producing herds. Methods The assessment was based on results from the salmonella surveillance of feed ingredients before introduction to feed mills and from HACCP - based surveillance of the feed mills. Results from the mills of the Company A that produced the salmonella contaminated feed were by the Chi. Square test compared to the results from all the other B - E feed producers registered in Sweden. Isolated serovars were compared to serovars from human cases of salmonellosis. Results Salmonella 28 serovars was frequently isolated from imported consignments of soybean meal and rape seed meal . Company A largely imported soybean meal from crushing plants with a history of unknown or frequent salmonella contamination. The risk for consignments of vegetable proteins to be salmonella contaminated was times P larger for A when compared to the mills of the other companies which largely were supplied by soybean meal from a crushing plant with a low risk for salmonella contamination. Also the level of feed mill contamination of salmonella was higher for feed mills belonging to Company A in comparison to the other companies before and also after heat treatment. Four of the 38 serovars isolated from feed ingredients 28 and feed mills 10 were on the EU 2007 top ten list of human cases of salmonellosis and all but eight on a 12 year list 1997-2008 of cases of human salmonellosis in Sweden. Conclusions Salmonella contaminated .

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