Focus on Shell Eggs Production: Microbiological Risk Assessment
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CONTRIBUTORS:
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JOURNAL:
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LUA Research papers,
66(19),
60 -
65.
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YEAR:
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2005
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PUB TYPE:
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Journal Article
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SUBJECT(S):
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Food safety, poultry, housing systems, eggs, contamination, microorganisms
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DISCIPLINE:
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Agricultural and Food Sciences
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HTTP:
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http://www.lzuu.lt/file.doc?id=16581
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LANGUAGE:
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English
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PUB ID:
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103-442-193
(Last edited on
2008/04/09 23:48:35 GMT-6)
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SPONSOR(S):
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ABSTRACT:
In 2002-2003 the investigation was carried out at the Department of Animal Hygiene and Ecology Institute of
Animal Science of Lithuanian Veterinary Academy, and on the two laying hens farms with different shell eggs
production systems: cage and litter floor systems. The aim of the study was to show the influence of changes in the
housing systems on egg production in Lithuania, with emphasis on microbiological contamination at farm level. Many cultures of fungi and bacteria were isolated from different substrates in laying hens barns: indoor air, litter, water and feed. The average concentration of bacteria on the farm with cage housing system was five times smaller (P<0.05) it compared with that in conventional litter floor system. Moulds of 13 species were identified from shell eggs. The results showed that micromycetes species of genera Aspergillus, Fusarium, Penicillium, Alternaria and Mucor were the most frequent in all the substrates of laying hens barns. Aspergillus was the most numerous genus of the dominant group. The results showed that eggs from conventional litter floor environments were typically more contaminated than those from cage systems.
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