Microbiological quality of mink feed raw materials and feed production area

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Lyhs , U , Frandsen , H , Andersen , B , Nonnemann , B , Hjulsager , C , Pedersen , K & Chriel , M 2019 , ' Microbiological quality of mink feed raw materials and feed production area ' , Acta Veterinaria Scandinavica , vol. 61 , no. 1 , 56 . https://doi.org/10.1186/s13028-019-0489-6

Title: Microbiological quality of mink feed raw materials and feed production area
Author: Lyhs, Ulrike; Frandsen, Henrik; Andersen, Birgitte; Nonnemann, Bettina; Hjulsager, Charlotte; Pedersen, Karl; Chriel, Mariann
Contributor: University of Helsinki, Institute for Molecular Medicine Finland
Date: 2019-11-21
Language: eng
Number of pages: 10
Belongs to series: Acta Veterinaria Scandinavica
ISSN: 0044-605X
URI: http://hdl.handle.net/10138/310965
Abstract: Background The quality of mink feed and raw ingredients affect health and growth. The objectives of this study were to examine the microbiological quality of ready-to-eat mink feed and its raw ingredients, screen the plant part of the feed for mycotoxins, and determine the hygiene of the production environment in the feed processing facilities. The results of the study are important for identification of critical steps in the feed production and for formulation of recommendations for improvements of production processes to obtain better quality feed. Feed and swab samples were taken at three Danish mink feed producers October 2016 and May 2017, respectively. Viable counts, detection of methicillin-resistant Staphylococcus aureus (MRSA), influenza virus and filamentous fungi were performed together with qualitative chemical analyses for bioactive fungal metabolites and mycotoxins. Swab samples were analyzed for total viable counts. Results Viable counts varied between 7.2 x 10(2) and 9.3 x 10(7) cfu/g in raw ingredients and between 10(7) and 10(9) cfu/cm(2) on different surfaces at the feed production facilities. A pork meat product, pork haemoglobin, pork liver and a poultry mix was found positive for MRSA, while monophasic Salmonella [4,5,12:i:-] was detected in a pork meat product. Neither MRSA nor Salmonella was detected in any ready-to-eat feed. Influenza A virus was not detected in any sample. Filamentous fungi were detected in all analysed samples of ready-to-eat feed while dihydro-demethyl-sterigmatocystin was found in almost 50% of all ready-to-eat feed samples and in 80% of the sugar beet pulp. Fumonisins and other Fusarium toxins were found especially in corn gluten meal and extruded barley and wheat. Conclusions Mink feed contained a cocktail of mycotoxins and bacteria, which may not per se cause clinical disease, but may affect organ function and animal performance and well-being.
Subject: Aspergillus
Clostridium
Hygiene
Influenza A virus
Mink
Mycotoxins
NEOVISON-VISON
STAPHYLOCOCCUS-AUREUS
ANTIMICROBIALS
RESISTANCE
AFLATOXIN
EFFICACY
ABORTION
POULTRY
USAGE
FARM
413 Veterinary science
416 Food Science
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