FUNGAL AND MICOTOXIN CONTAMINATION IN MIXED FEEDS: EVALUATING RISK IN CATTLE INTENSIVE REARING OPERATIONS (FEEDLOTS)
Argentina is the fourth global beef producer. Exposure to mycotoxins through contaminated feed is a major hazard for ruminants. In the present study we assess mycobiota, aflatoxin B1 (AFB1), fumonisin B1 (FB1), deoxynivalenol (DON) and zearalenone (ZEA) levels in total mixed rations (TMRs) during tw...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Nayarit
2012-07-01
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| Series: | Revista Bio Ciencias |
| Subjects: | |
| Online Access: | http://biociencias.uan.edu.mx/publicaciones/03-01/biociencias3-1-5.pdf |
| _version_ | 1811240983308795904 |
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| author | Cavaglieri LR Dalcero AM Rosa CAR Chiacchiera SM González Pereyra ML |
| author_facet | Cavaglieri LR Dalcero AM Rosa CAR Chiacchiera SM González Pereyra ML |
| author_sort | Cavaglieri LR |
| collection | DOAJ |
| description | Argentina is the fourth global beef producer. Exposure to mycotoxins through contaminated feed is a major hazard for ruminants. In the present study we assess mycobiota, aflatoxin B1 (AFB1), fumonisin B1 (FB1), deoxynivalenol (DON) and zearalenone (ZEA) levels in total mixed rations (TMRs) during two consecutive years. Total fungal counts were evaluated and fungal species were identified. Also, ability of A. flavus isolates to produce AFB1 in vitro was tested. Natural contamination with AFB1 and FB1 was quantified by HPLC. Deoxynivalenol and zearalenone were analysed by immunochromatography and thinlayer chromatogra- phy (TLC), respectively. Fungal counts varied from not detectable (ND) to 2.10 x 108 CFU g-1. The prevalent genera were Aspergillus spp (60 %) and Fusarium spp (66.7 %), respectively The prevalent species was Aspergillus fumigatus. 50 % of A. flavus strains produced 75 to 112.5 μg g-1 AFB1. 46 % of 2007 samples were contaminated with 4 to 10 μg kg-1 AFB1. Deoxynivalenol was detected in 33.3 % of the samples (≥ 1. 25 μg g-1). Fumonisin B1 and ZEA were not detected. This study can be useful to estimate the mycotoxicological risk of cattle TMRs in this region and to compare results with studies from other beef-producing countries. |
| first_indexed | 2024-04-12T13:28:56Z |
| format | Article |
| id | doaj.art-1683987992d04865866f6757c03cd77f |
| institution | Directory Open Access Journal |
| issn | 2007-3380 |
| language | English |
| last_indexed | 2024-04-12T13:28:56Z |
| publishDate | 2012-07-01 |
| publisher | Universidad Autónoma de Nayarit |
| record_format | Article |
| series | Revista Bio Ciencias |
| spelling | doaj.art-1683987992d04865866f6757c03cd77f2022-12-22T03:31:14ZengUniversidad Autónoma de NayaritRevista Bio Ciencias2007-33802012-07-01216980FUNGAL AND MICOTOXIN CONTAMINATION IN MIXED FEEDS: EVALUATING RISK IN CATTLE INTENSIVE REARING OPERATIONS (FEEDLOTS)Cavaglieri LRDalcero AMRosa CARChiacchiera SMGonzález Pereyra MLArgentina is the fourth global beef producer. Exposure to mycotoxins through contaminated feed is a major hazard for ruminants. In the present study we assess mycobiota, aflatoxin B1 (AFB1), fumonisin B1 (FB1), deoxynivalenol (DON) and zearalenone (ZEA) levels in total mixed rations (TMRs) during two consecutive years. Total fungal counts were evaluated and fungal species were identified. Also, ability of A. flavus isolates to produce AFB1 in vitro was tested. Natural contamination with AFB1 and FB1 was quantified by HPLC. Deoxynivalenol and zearalenone were analysed by immunochromatography and thinlayer chromatogra- phy (TLC), respectively. Fungal counts varied from not detectable (ND) to 2.10 x 108 CFU g-1. The prevalent genera were Aspergillus spp (60 %) and Fusarium spp (66.7 %), respectively The prevalent species was Aspergillus fumigatus. 50 % of A. flavus strains produced 75 to 112.5 μg g-1 AFB1. 46 % of 2007 samples were contaminated with 4 to 10 μg kg-1 AFB1. Deoxynivalenol was detected in 33.3 % of the samples (≥ 1. 25 μg g-1). Fumonisin B1 and ZEA were not detected. This study can be useful to estimate the mycotoxicological risk of cattle TMRs in this region and to compare results with studies from other beef-producing countries.http://biociencias.uan.edu.mx/publicaciones/03-01/biociencias3-1-5.pdfAflatoxinscattledeoxynivalenolfeedstuffsfumonisins. |
| spellingShingle | Cavaglieri LR Dalcero AM Rosa CAR Chiacchiera SM González Pereyra ML FUNGAL AND MICOTOXIN CONTAMINATION IN MIXED FEEDS: EVALUATING RISK IN CATTLE INTENSIVE REARING OPERATIONS (FEEDLOTS) Revista Bio Ciencias Aflatoxins cattle deoxynivalenol feedstuffs fumonisins. |
| title | FUNGAL AND MICOTOXIN CONTAMINATION IN MIXED FEEDS: EVALUATING RISK IN CATTLE INTENSIVE REARING OPERATIONS (FEEDLOTS) |
| title_full | FUNGAL AND MICOTOXIN CONTAMINATION IN MIXED FEEDS: EVALUATING RISK IN CATTLE INTENSIVE REARING OPERATIONS (FEEDLOTS) |
| title_fullStr | FUNGAL AND MICOTOXIN CONTAMINATION IN MIXED FEEDS: EVALUATING RISK IN CATTLE INTENSIVE REARING OPERATIONS (FEEDLOTS) |
| title_full_unstemmed | FUNGAL AND MICOTOXIN CONTAMINATION IN MIXED FEEDS: EVALUATING RISK IN CATTLE INTENSIVE REARING OPERATIONS (FEEDLOTS) |
| title_short | FUNGAL AND MICOTOXIN CONTAMINATION IN MIXED FEEDS: EVALUATING RISK IN CATTLE INTENSIVE REARING OPERATIONS (FEEDLOTS) |
| title_sort | fungal and micotoxin contamination in mixed feeds evaluating risk in cattle intensive rearing operations feedlots |
| topic | Aflatoxins cattle deoxynivalenol feedstuffs fumonisins. |
| url | http://biociencias.uan.edu.mx/publicaciones/03-01/biociencias3-1-5.pdf |
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