Study on toxigenic fungi in ruminant feeds under desert conditions with special references to its biological control

Hegazy, Shimaa M.S.; Hassan, Walid H.; Shawki, Heidi M.; Osman, Wafaa Abd El-Lateef

doi:10.1016/j.bjbas.2015.05.011

Cited by 2 publications

(4 citation statements)

References 20 publications

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“…It is a well-documented problem in poultry and pigs pellets that are rich in grains [ 12 ]. Similarly, in grain-rich ruminant feeds, Hegazy et al [ 27 ] found fungi, such as Aspergillus flavus , A. niger , Alternaria spp., A. fumigates and A. terreus , Cladosporium spp., Fusarium spp., Mucor spp., Penicillium spp., Trichoderma spp., and Rhizopus spp. In addition, identified fungal strains in grain-rich pellets, stored at different temperatures for 3 months, included Eurotium amstelodami , Scopulariopsis brevicaulis , A. candidus , A. niger , A. unguis , Trichomonascus ciferrii , Stepharoascus ciferrii , Absidia corymbifera , and Rhizopus microspores .…”

Section: Discussionmentioning

confidence: 99%

Feed Preference Response of Weaner Bull Calves to Bacillus amyloliquefaciens H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets

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et al. 2020

Animals

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This study tested the hypothesis that Bacillus amyloliquefaciens strain H57 (H57) improves preference by reducing the development of microbial volatile organic compounds (mVOCs) in feed pellets. Sixteen bull calves were, for 4 weeks, provided equal access to a panel of 8 automated feed bunks in a single paddock with some hay. Each bunk contained pellets with (H57) or without (Control) the H57, each aged for 4 months at either ambient or chiller temperature. Each treatment was changed to a new bunk pair position weekly. Relative preference was determined according to weight of pellets remaining per hour per treatment bunk pair per 24 h. Pellets were analysed for volatile organic compounds (VOCs) and the concentrations tested for correlation with relative preference. Calves showed the lowest preference (p < 0.0001) for the Control/Ambient treatment whereas preference for all other treatments (H57/Ambient; H57/Chiller; Control/Chiller) was similar. The Control/Ambient treatment odour profile grouped differently to the other 3 treatments which grouped similarly to each other. Up to 16 mVOCs were determined to have potential as pre-ingestive signals for the extent of microbial spoilage. Further studies are required to find which combination of these mVOCs, when added to pellets, results in feed aversion.

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Section: Discussionmentioning

confidence: 99%

Feed Preference Response of Weaner Bull Calves to Bacillus amyloliquefaciens H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets

Ngo

Bang

Dart

et al. 2020

Animals

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“…Zanieczyszczenie pasz grzybami i ich zarodnikami jest częstym tematem doniesień w literaturze światowej (7,30). Według raportu Hegazy i wsp.…”

Section: Drożdże I Pleśnie W Paszyunclassified

“…Według raportu Hegazy i wsp. (30), głównymi grzybami pleśniowymi występującymi w paszach dla przeżuwaczy są: Penicillium spp., Aspergillus flavus, Cladosporium spp., Mucor spp., Trichoderma spp., Aspergillus niger, Alternaria spp., Rhizopus spp., Fusarium spp., A. fumigates i A. terreus. Jak wynika z badań Cegielskiej-Radziejewskiej (7), do najczęstszych rodzajów grzybów pleśniowych wykrywanych w paszach dla drobiu należą: Aspergillus, Rhizopus i Mucor.…”

Section: Drożdże I Pleśnie W Paszyunclassified

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Microbiological contamination of feed – current hazards and new challenges

Goldsztejn¹,

Grenda²,

Kozak³

et al. 2022

Medycyna Weterynaryjna

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Feed microflora remains a very complex and still largely uncharacterized ecosystem. Given the wide range of potential sources of microbial contamination that may come into contact with feed, a variety of microorganisms, including pathogenic ones, can be expected. Microbiological contamination of feeds depends on environmental factors, which are a natural, primary source related to the microflora carried on feed materials and coming from soil, water and air. Microbial contamination may also emerge secondarily in the processing and distribution stages of feed, but also in the breeding stage, where feed may be contaminated by animals showing disease symptoms or asymptomatically. A wide variety of pathogenic microorganisms that are transmitted symptomatically or asymptomatically can cause economic losses to feed producers and farmers, and some of them due to their zoonotic nature can also pose a potential risk to consumers. New feed materials appear on the market, i.e. Insect Processed Animal Proteins, which are part of the strategy of replacing traditional protein sources. These materials are under investigation for their benefits as well as for microbiological safety. The aim of this review was to present the current knowledge on the main microbiological risk factors influencing the quality and safety of feed, as well as new analytical challenges related to the introduction of new feed materials.

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Study on toxigenic fungi in ruminant feeds under desert conditions with special references to its biological control

Cited by 2 publications

References 20 publications

Feed Preference Response of Weaner Bull Calves to Bacillus amyloliquefaciens H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets

Feed Preference Response of Weaner Bull Calves to Bacillus amyloliquefaciens H57 Probiotic and Associated Volatile Organic Compounds in High Concentrate Feed Pellets

Microbiological contamination of feed – current hazards and new challenges

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