The Impact of Selective Dry Cow Therapy Adopted in a Brazilian Farm on Bacterial Diversity and the Abundance of Quarter Milk

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dc.contributor.authorGoncalves, Juliano L.
dc.contributor.authorYoung, Juliana
dc.contributor.authorLeite, Renata de F.
dc.contributor.authorFidelis, Carlos E.
dc.contributor.authorTrevisoli, Priscila A.
dc.contributor.authorCoutinho, Luiz L.
dc.contributor.authorSilva, Nathália C. C.
dc.contributor.authorCue, Roger I.
dc.contributor.authorRall, Vera Lucia Mores [UNESP]
dc.contributor.authordos Santos, Marcos V.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionMichigan State University (MSU)
dc.contributor.institutionUniversity of Wisconsin-Madison (UW)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionMcGill University
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T13:59:32Z
dc.date.available2023-07-29T13:59:32Z
dc.date.issued2022-10-01
dc.description.abstractWe aimed to evaluate the impact of selective dry cow therapy (SDCT) (protocol 1: antimicrobial combined with internal teat sealant (ITS); vs. protocol 2: ITS alone) on bacterial diversity and the abundance of quarter milk. Eighty high production cows (parity ≤ 3 and an average milk yield of 36.5 kg/cow/day) from the largest Brazilian dairy herd available were randomly selected; milk quarter samples were collected for microbiological culture (MC) on the day of drying-off (n = 313) and on day 7 post-calving (n = 313). Based on the results of the MC before and after calving, 240 quarters out of 313 were considered healthy, 38 were cured, 29 showed new infections and 6 had persistent infections. Mammary quarters were randomly selected based on intramammary information status and SDCT protocols for bacterial diversity analyses. The bacterial diversity was similar when comparing both healthy and cured quarters submitted to both drying-off protocols. Despite healthy cows that were treated at dry-off using only teat sealant showing no alteration in the alpha and beta bacterial diversity, they did show a higher abundance of bacterial groups that may be beneficial to or commensals of the mammary gland, which implies that antibiotic therapy should be reserved for mammary quarters with a history of mastitis.en
dc.description.affiliationDepartment of Animal Nutrition and Production School of Veterinary Medicine and Animal Sciences University of São Paulo (USP)
dc.description.affiliationDepartment of Large Animal Clinical Sciences College of Veterinary Medicine Michigan State University (MSU)
dc.description.affiliationDepartment of Bacteriology University of Wisconsin-Madison (UW)
dc.description.affiliationCollege of Agriculture University of São Paulo (USP), São Paulo
dc.description.affiliationDepartment of Food Science and nutrition Faculty of Food Engineering University of Campinas, São Paulo
dc.description.affiliationDepartment of Animal Science McGill University, Macdonald Campus
dc.description.affiliationDepartment of Chemical and Biological Sciences Institute of Biosciences Sao Paulo State University, São Paulo
dc.description.affiliationUnespDepartment of Chemical and Biological Sciences Institute of Biosciences Sao Paulo State University, São Paulo
dc.identifierhttp://dx.doi.org/10.3390/vetsci9100550
dc.identifier.citationVeterinary Sciences, v. 9, n. 10, 2022.
dc.identifier.doi10.3390/vetsci9100550
dc.identifier.issn2306-7381
dc.identifier.scopus2-s2.0-85140601905
dc.identifier.urihttp://hdl.handle.net/11449/248995
dc.language.isoeng
dc.relation.ispartofVeterinary Sciences
dc.sourceScopus
dc.subjectantibiotic resistance
dc.subjectbacterial diversity
dc.subjectinternal teat sealant
dc.subjectnew intramammary infection
dc.subjectselective dry cow therapy
dc.titleThe Impact of Selective Dry Cow Therapy Adopted in a Brazilian Farm on Bacterial Diversity and the Abundance of Quarter Milken
dc.typeArtigo
unesp.author.orcid0000-0003-0732-1563[3]
unesp.author.orcid0000-0002-0711-9800[5]
unesp.author.orcid0000-0002-2839-1416[7]
unesp.author.orcid0000-0003-4280-5619[9]
unesp.author.orcid0000-0002-4273-3494[10]

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