Risk Factors Associated With Mastitis in Smallholder Dairy Farms in Southeast Brazil

Simple item page
dc.citation.issue7
dc.citation.volume11
dc.contributor.authorSilva AC
dc.contributor.authorLaven R
dc.contributor.authorBenites NR
dc.contributor.editorPersson Y
dc.contributor.editorRahman MM
dc.coverage.spatialSwitzerland
dc.date.accessioned2024-02-01T19:32:44Z
dc.date.accessioned2024-07-25T06:39:47Z
dc.date.available2021-07-14
dc.date.available2024-02-01T19:32:44Z
dc.date.available2024-07-25T06:39:47Z
dc.date.issued2021-07-14
dc.description.abstractThe aim of this study was to investigate the potential risk factors for clinical and subclinical mastitis in smallholder dairy farms in Brazil. A prospective, repeated cross-sectional study was carried out between May 2018 and June 2019 on 10 smallholder dairy farms. Potential risk factors for subclinical and clinical mastitis at the herd and cow level were recorded through interviewing the owner and by observation. A combination of clinical udder examination and the Tamis (screened mug with a dark base) test (Tadabras Indústria e Comércio de Produtos Agrovetereinário LTDA, Bragrança Paulista, SP, Brazil) were applied to observe clinical mastitis, and the California Mastitis Test (Tadabras Indústria e Comércio de Produtos Agrovetereinário LTDA, Bragrança Paulista, SP, Brazil) was used to determine subclinical mastitis. A total of 4567 quarters were tested, 107 (2.3%) had clinical mastitis, while 1519 (33.2%) had subclinical mastitis. At the cow level, clinical mastitis risk was highest in mid-lactation (50-150 days in milk) with OR 2.62 with 95% confidence interval (CI) of 1.03-6.67, while subclinical mastitis was highest in late lactation (> 150 days in milk) with OR 2.74 (95% CI 2.05-3.63) and lower in primiparous (OR 0.54, 95% CI 0.41-0.71) than multiparous cows. At the herd level, using dry-cow treatment (OR 4.23, 95% CI 1.42-12.62) was associated with an increased risk of clinical mastitis. Milking clinical (OR 0.37, 95% CI 0.24-0.56) and subclinical cases last (OR 0.21, 95% CI 0.09-0.47) and cleaning the milking parlor regularly (OR 0.27, 95% CI 0.15-0.46) had decreased odds for subclinical mastitis, while herds with optimized feed had greater odds (OR 9.11, 95% CI 2.59-31.9). Prevalence of clinical mastitis was at its lowest at the first visit in June/July and highest at the last visit in April/June (OR 3.81, 95% CI 1.93-7.52). Subclinical mastitis also presented increased odds in the last visit (OR 2.62, 95% CI 2.0-3.36). This study has identified some risk factors for mastitis on smallholder farms but further research on more farms across more areas of Brazil is required to develop a targeted mastitis control program for smallholder farms.
dc.description.confidentialfalse
dc.edition.editionJuly 2021
dc.format.pagination2089-
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/34359217
dc.identifier.citationSilva AC, Laven R, Benites NR. (2021). Risk Factors Associated With Mastitis in Smallholder Dairy Farms in Southeast Brazil.. Animals (Basel). 11. 7. (pp. 2089-).
dc.identifier.doi10.3390/ani11072089
dc.identifier.eissn2076-2615
dc.identifier.elements-typejournal-article
dc.identifier.issn2076-2615
dc.identifier.numberARTN 2089
dc.identifier.piiani11072089
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70633
dc.languageeng
dc.publisherMDPI (Basel, Switzerland)
dc.publisher.urihttps://www.mdpi.com/2076-2615/11/7/2089
dc.relation.isPartOfAnimals (Basel)
dc.rights(c) The author/sen
dc.rights.licenseCC BY 4.0en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectclinical mastitis
dc.subjectfarm management
dc.subjectmilking management
dc.subjectsubclinical mastitis
dc.titleRisk Factors Associated With Mastitis in Smallholder Dairy Farms in Southeast Brazil
dc.typeJournal article
pubs.elements-id447511
pubs.organisational-groupOther
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