Fungal Contamination of Dairy Feed and Major Mycotoxin Transfer: A Risk Evaluation for Animal Exposure and Health
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View abstract on PubMed
Summary
This summary is machine-generated.Dairy cattle feed fungal growth and mycotoxin accumulation were studied. Aflatoxin M1 carry-over into milk was minimal, but subclinical liver changes were observed in cattle due to chronic low-dose exposure.
Area Of Science
- Animal Science
- Mycology
- Food Safety
Background
- Fungal contamination and mycotoxin production in animal feed pose risks to livestock health.
- Understanding fungal dynamics and mycotoxin accumulation in feed is crucial for dairy production.
- Dairy cattle are susceptible to mycotoxins, which can affect their health and milk quality.
Purpose Of The Study
- To assess fungal occurrence, mycotoxin dynamics, and aflatoxin carry-over in dairy cattle feed.
- To investigate the biochemical responses of dairy cattle to mycotoxin exposure.
- To determine the relationship between feed mycotoxins and milk aflatoxin M1 levels.
Main Methods
- Fungal communities were analyzed based on substrate moisture content.
- Mycotoxin levels (ochratoxin A, zearalenone, aflatoxins) were quantified in feed matrices.
- Aflatoxin M1 in milk was measured to assess carry-over.
- Serum biochemical parameters were analyzed to evaluate cattle health responses.
Main Results
- Moisture content significantly influenced fungal genus distribution in feed.
- Mycotoxin levels fluctuated dynamically during feed storage, with ochratoxin A accumulating significantly.
- Aflatoxin M1 levels in milk were low, indicating limited carry-over from feed.
- While serum biochemical parameters remained within normal ranges, multivariate analyses revealed metabolic modulation linked to aflatoxin exposure, particularly affecting hepatic profiles.
Conclusions
- Feed moisture is a key driver of fungal contamination in dairy feed.
- Mycotoxin accumulation during feed storage can occur independently of fungal counts.
- Dairy cattle exhibit subclinical physiological adaptations to chronic low-dose aflatoxin exposure, impacting liver function.
- Monitoring feed quality and mycotoxin levels is essential for dairy herd health and productivity.
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