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Molecular Detection and Sensitivity to Antibiotics and Bacteriocins of Pathogens Isolated from Bovine Mastitis in Family Dairy Herds of Central Mexico

León-Galván, Ma. Fabiola ; Barboza-Corona, José E. ; Lechuga-Arana, A. Arianna ; Valencia-Posadas, Mauricio ; Aguayo, Daniel D. ; Cedillo-Pelaez, Carlos ; Martínez-Ortega, Erika A. ; Gutierrez-Chavez, Abner J. López-Meza, Joel E.

BioMed research international, 2015-01, Vol.2015, p.615153-9 [Periódico revisado por pares]

United States: Hindawi Publishing Corporation

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Título:
Molecular Detection and Sensitivity to Antibiotics and Bacteriocins of Pathogens Isolated from Bovine Mastitis in Family Dairy Herds of Central Mexico
Autor: León-Galván, Ma. Fabiola ; Barboza-Corona, José E. ; Lechuga-Arana, A. Arianna ; Valencia-Posadas, Mauricio ; Aguayo, Daniel D. ; Cedillo-Pelaez, Carlos ; Martínez-Ortega, Erika A. ; Gutierrez-Chavez, Abner J.
López-Meza, Joel E.
Assuntos: Animals ; Anti-Bacterial Agents - administration & dosage ; Antibiotics ; Bacillus thuringiensis ; Bacteria ; Bacteriocins ; Bacteriocins - administration & dosage ; Brachybacterium ; Brevibacterium ; Cattle ; Dairy cattle ; Dairy industry ; Dairying ; Dosage and administration ; Drug interactions ; Drug Resistance, Bacterial - genetics ; Drug therapy ; Female ; Health aspects ; Humans ; Laboratories ; Life sciences ; Mastitis ; Mastitis, Bovine - drug therapy ; Mastitis, Bovine - microbiology ; Mexico ; Microbial Sensitivity Tests ; Microorganisms ; Milk ; Milk - microbiology ; Observations ; Peptides ; RNA, Ribosomal, 16S - genetics ; Staphylococcal Infections - drug therapy ; Staphylococcal Infections - genetics ; Staphylococcal Infections - pathology ; Staphylococcus aureus ; Staphylococcus aureus - drug effects ; Staphylococcus aureus - pathogenicity ; Streptococcus uberis ; Studies
É parte de: BioMed research international, 2015-01, Vol.2015, p.615153-9
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Academic Editor: Joel E. López-Meza
Descrição: Thirty-two farms (n=535 cows) located in the state of Guanajuato, Mexico, were sampled. Pathogens from bovine subclinical mastitis (SCM) and clinical mastitis (CLM) were identified by 16S rDNA and the sensitivity to both antibiotics and bacteriocins of Bacillus thuringiensis was tested. Forty-six milk samples were selected for their positive California Mastitis Test (CMT) (≥3) and any abnormality in the udder or milk. The frequency of SCM and CLM was 39.1% and 9.3%, respectively. Averages for test day milk yield (MY), lactation number (LN), herd size (HS), and number of days in milk (DM) were 20.6 kg, 2.8 lactations, 16.7 animals, and 164.1 days, respectively. MY was dependent on dairy herd (DH), LN, HS, and DM P<0.01, and correlations between udder quarters from the CMT were around 0.49 P<0.01. Coagulase-negative staphylococci were mainly identified, as well as Staphylococcus aureus, Streptococcus uberis, Brevibacterium stationis, B. conglomeratum, and Staphylococcus agnetis. Bacterial isolates were resistant to penicillin, clindamycin, ampicillin, and cefotaxime. Bacteriocins synthesized by Bacillus thuringiensis inhibited the growth of multiantibiotic resistance bacteria such as S. agnetis, S. equorum, Streptococcus uberis, Brevibacterium stationis, and Brachybacterium conglomeratum, but they were not active against S. sciuri, a microorganism that showed an 84% resistance to antibiotics tested in this study.
Editor: United States: Hindawi Publishing Corporation
Idioma: Inglês

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Molecular Detection and Sensitivity to Antibiotics and Bacteriocins of Pathogens Isolated from Bovine Mastitis in Family Dairy Herds of Central Mexico

León-Galván, Ma. Fabiola ; Barboza-Corona, José E. ; Lechuga-Arana, A. Arianna ; Valencia-Posadas, Mauricio ; Aguayo, Daniel D. ; Cedillo-Pelaez, Carlos ; Martínez-Ortega, Erika A. ; Gutierrez-Chavez, Abner J. López-Meza, Joel E.

United States: Hindawi Publishing Corporation

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