title: A survey on the occurrence of ochratoxin A in feeds for swine and laying hens.
abstract: Results of a 2-year (2009-2010) survey on the occurrence of ochratoxin A (OTA) in swine feed and in feed for laying hens in Portugal are reported. A total of 664 samples (478 swine feed, 186 feed for laying hens) were analyzed by a HPLC method using fluorescence detection with 2 μg kg(-1) as detection limit. In swine feed, 31 samples (6.49%) were positive for OTA. In feed for laying hens, 12 samples (6.45%) were OTA-positive. The average levels of contamination were low, with median values of positive samples at 3-4 μg kg(-1) in both years and both commodities, although a few samples contained exceptionally high levels (maximum 130 μg kg(-1)). Only the maximum level sample (swine feed) contained OTA at a concentration exceeding the European Commission guidance value. The remaining OTA concentrations found in feed samples were much lower than the guidance values.
authors.affiliation: INRB, IP - Laboratório Nacional de Investigação Veterinária, Estrada de Benfica 701, 1549-011 Lisboa, Portugal. marina.martins@lniv.min-agricultura.pt
authors.forename: H Marina
authors.initials: HM
authors.lastname: Martins
authors.forename: Inês
authors.initials: I
authors.lastname: Almeida
authors.forename: Carolina
authors.initials: C
authors.lastname: Camacho
authors.forename: José M
authors.initials: JM
authors.lastname: Costa
authors.forename: Fernando
authors.initials: F
authors.lastname: Bernardo
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002645:Chickens; D002851:Chromatography, High Pressure Liquid; D005260:Female; D005506:Food Contamination; D009183:Mycotoxins / Q000032:analysis*; D009793:Ochratoxins / Q000032:analysis*; D011174:Portugal; D013552:Swine
chemical_list: D009183:Mycotoxins; D009793:Ochratoxins; C025589:ochratoxin A