Differences in the microRNAs Levels of Raw Milk from Dairy Cattle Raised under Extensive or Intensive Production Systems

Studying microRNA (miRNAs) in certain agri-food products is attractive because (1) they have potential as biomarkers that may allow traceability and authentication of such products; and (2) they may reveal insights into the products' functional potential. The present study evaluated differences...

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Published in:Veterinary sciences 2022-11, Vol.9 (12), p.661
Main Authors: Abou El Qassim, Loubna, Alonso, Jaime, Zhao, Ke, Le Guillou, Sandrine, Diez, Jorge, Vicente, Fernando, Fernández-Sanjurjo, Manuel, Iglesias-Gutiérrez, Eduardo, Guan, Leluo, Royo, Luis J
Format: Article
Language:English
Subjects:
Animal welfare
biomarker
Consumer behavior
Dairy cattle
Dairy farms
dairy production systems
Diet
Farm buildings
Farms
Food products
Gene expression
Life Sciences
MicroRNA
MicroRNAs
Milk
Milk production
miRNA
mRNA
Oils & fats
Pasture
Quality control
Reagents
Rural populations
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Summary:Studying microRNA (miRNAs) in certain agri-food products is attractive because (1) they have potential as biomarkers that may allow traceability and authentication of such products; and (2) they may reveal insights into the products' functional potential. The present study evaluated differences in miRNAs levels in fat and cellular fractions of tank milk collected from commercial farms which employ extensive or intensive dairy production systems. We first sequenced miRNAs in three milk samples from each production system, and then validated miRNAs whose levels in the cellular and fat fraction differed significantly between the two production systems. To accomplish this, we used quantitative PCR with both fractions of tank milk samples from another 20 commercial farms. Differences in miRNAs were identified in fat fractions: overall levels of miRNAs, and, specifically, the levels of were higher in intensive systems than in extensive systems. Bovine mRNA targets for and their pathway analysis were performed. While the causes of these miRNAs differences remain to be elucidated, our results suggest that the type of production system could affect miRNAs levels and potential functionality of agri-food products of animal origin.
ISSN:2306-7381
2306-7381
DOI:10.3390/vetsci9120661