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Cited by 476Milk Quality and Mastitis in Dairy CowsMicrobial infections and disease researchGenetic and phenotypic traits in livestock

The DOI matches its Crossref record; 55 of the 57 references it cites were found in a registry or an index.

Environmental Mastitis: Cause, Prevalence, Prevention

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Smith, K.Larry, Todhunter, D.A., Schoenberger, P.S.·1985·Journal of Dairy Science
DOI 10.3168/jds.s0022-0302(85)80993-0
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Abstract

Rate of intramammary infection by coliform bacteria and species of streptococci other than Streptococcus agalactiae (environmental pathogens) was studied in a dairy herd in total confinement. Rate was higher during the dry period than during lactation and increased progressively as parity increased. Rate was maximal during summer and coincided with maximum exposure to coliforms in bedding. Streptococcal infections were longer than coliform. Approximately 59% of streptococcal infections and 69% of coliform infections were present for 30 lactation days or less. Percent quarters infected by day of year varied between .7 and 3.0% for coliform bacteria and between 1.6 and 4.7% for streptococci. Approximately 81% of coliform infections and 53% of streptococcal infections during lactation were clinical. Clinical cases were highest during the first 76 days of lactation and during summer. Only 6.7% of coliform infections resulted in acute coliform mastitis, and all acute cases were during summer or early lactation. Dry cow therapy reduced rate of streptococcal infection during the early dry period but was without effect during the prepartum period. There was no effect of dry cow therapy on coliform infection rate during the dry period. Problems associated with prevalence and control of environmental mastitis were discussed.

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Crossref · 10.3168/jds.s0022-0302(85)80993-0

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Research works printed but not linked: 5

  1. Eberhart, 1975, Control of coliform mastitis. Seminar on Mastitis Control, Int. Dairy Fed. Bull. Doc., 85, 371
  2. Eberhart, 1977, Coliform mastitis, J. Am. Vet. Med. Assoc., 170, 1160, 10.2460/javma.1977.170.10.1160 · DOI
  3. Murphy, 1943, Infections of the bovine udder with coliform bacteria, Cornell Vet., 33, 61
  4. Smith, 1982, Diagnosis of coliform intramammary infection, J. Dairy Sci., 65, 170
  5. Smith, 1983, Relationship of stage of lactation and season of year to incidence of clinical mastitis caused by environmental pathogens, J. Dairy Sci., 66, 202

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Metadata

Authors
Smith, K. L., Todhunter, D. A., & Schoenberger, P. S.
ORCID
Smith, K.Larry
Venue
Journal of Dairy Science
Publisher
American Dairy Science Association
Published
1985-06
Volume
68
Issue
6
Pages
1531-1553
ISSN
0022-0302 (ISSN-L)
DOI
10.3168/jds.s0022-0302(85)80993-0
OpenAlex
W1511204912
Cited by
475
References
57
Citations by year
2026: 11 · 2025: 2 · 2024: 12 · 2023: 3 · 2022: 18 · 2021: 13 · 2020: 32 · 2019: 9 · 2018: 14 · 2017: 14 · 2016: 9 · 2015: 9 · 2014: 43 · 2013: 15 · 2012: 16
FWCI
16.80
Type
journal article
Language
en
Open access
Licence
Locations
  • Journal of Dairy Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Agriculture
  • Ohio State University
Topics
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Milk Quality and Mastitis in Dairy Cows
  • Life Sciences › Immunology and Microbiology › Microbiology › Microbial infections and disease research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
Keywords
environmental mastitis, intramammary infection, coliform bacteria, Streptococcus, Streptococcus agalactiae, dairy cattle, dry period, parity, seasonal variation, bedding, dry cow therapy, clinical mastitis, mastitis prevention, total confinement
MeSH terms
Animals, Cattle, Corynebacterium, Disinfection, Enterobacteriaceae, Environmental Microbiology, Female, Immunization, Lactation, Mammary Glands, Animal, Mastitis, Bovine, Ohio, Pregnancy, Seasons, Species Specificity, Staphylococcus, Streptococcus

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