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Gliotoxinogenic Aspergillus fumigatus in the dairy herd environment.
MedLine Citation:
PMID:  23467846     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The potential association between hygienic conditions in the environment of lactating cows and the presence of gliotoxinogenic Aspergillus fumigatus strains was studied. Milk samples (individual cow's milk [ICM], bulk tank milk [BTM]) from 44 dairy farms were sampled. In ICM samples, eight different species of Aspergillus were identified. A. flavus and A. fumigatus were predominant, with 37.8 % and 26.1 % relative densities, respectively. A. fumigatus strains were isolated from 61.4 % of the BTM samples, and 34 % of these strains were able to produce gliotoxin. Principal component analysis was used to associate the presence of A. fumigatus with some hygienic and sanitary practices. A significant and positive correlation was observed between dry cow therapy and forestripping. The presence of A. fumigatus gliotoxin producers in milk was associated with high somatic cells count (SCC) samples. Good hygienic and sanitary practices were associated with absence of A. fumigatus and relatively low SCCs of <250,000 cells/ml. In general, a high percentage of dairy farms were positive for A. fumigatus in BTM samples. This is the first work that indicates the positive effects of adequate hygienic and sanitary practices in dairy herds on the control of A. fumigatus and related species. By reducing the frequency of Aspergillus spp. in the dairy environment, the risk of farm handlers' exposure and the risk of intramammary fungal infections would also be reduced.
Authors:
M Pellegrino; V Alonso; C Vissio; A Larriestra; S M Chiacchiera; C Bogni; L Cavaglieri
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-3-7
Journal Detail:
Title:  Mycotoxin research     Volume:  -     ISSN:  1867-1632     ISO Abbreviation:  Mycotoxin Res     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-3-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8807334     Medline TA:  Mycotoxin Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Departamento de Microbiología e Inmunología, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina.
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