Microbioma do leite de bovinos das raças Curraleiro Pé-Duro e Pantaneiro
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2019-08-22
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Universidade Federal de Goiás
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The objective of the present study was to describe the microbiota of raw milk
from naturalized bovine breeds, such as Curraleiro Pé- Duro and Pantaneiro and
to increase the value of these herds, through their use as specific genetic banks
of microorganisms. Attention is also given to the possible technological
application of microbial populations present in the udder and milk of these
breeds. Six samples of milk from the Curraleiro Pé-Duro herd were collected at
the State University of Mato Grosso do Sul, University Unit of Aquidauana, while
15 samples from the Pantaneiro herd were collected from the Aquidauana
Center for Pantaneiro Cattle Conservation also belonging to the State University
of Mato Grosso do Sul, University Unit of Aquidauana .From the results found in
this study, the Somatic Cell Count and the centesimal composition were
determined to identify lactic acid bacteria present in the raw milk and to
recognize those isolated lactic acid bacteria both by phenotype and genotype
that produce bacteriocins with inhibitory activity against food pathogens and
their susceptibility to antimicrobials. In addition, the genes present and protein
sequences were described. The results suggest that, even though it is a herd of
low milk production, it presents quality. The microbiota that makes up the
Curraleiro Pé-Duro and Pantaneiro breeds is specifically interesting with regard
to the functional use of lactic acid bacteria. Enterococcus faecium was the
dominant species, with phenotypic variability for the production of bacteriocins
and resistance to vancomycin and penicillin. Pantaneiro cattle isolates were
known to produce bacteriocins anti- Listeria monocytogenes and with genome
elements that show double suitability for agroindustrial use, as well as risk to
animal and human health.
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SOARES, N. R. Microbioma do leite de bovinos das raças Curraleiro Pé-Duro e Pantaneiro. 2019. 61 f. Tese (Doutorado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2019.