Hemolytic and bactericidal activities of bovine complement in mammary secretions of cows during the early nonlactating (dry) period
Abstract
Hemolytic and bactericidal complement-dependent activities were measured in quarter mammary secretions obtained during the first 21 days of the nonlactating (dry) period from 8 Holstein-Friesian cows. We demonstrated an inhibition of hemolytic activity and bactericidal activity against a serum-sensitive Escherichia coli strain. Both hemolytic and inhibitory titers increased markedly during active involution. The bactericidal activity of dry secretions required a minimal threshold of complement and an inhibitory titer lower than the hemolytic titer.
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Complement activity is greater in secretions from involuted mammary glands than in milk collected during lactation.
“Complement activity is greater in secretions from involuted mammary glands than in milk collected during lactation [51].”
From Coliform mastitis (2003) · cites this paper as [51]
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Hogan, J., & Larry Smith, K. (2003) · Veterinary Research · doi:10.1051/vetres:2003022 · Cited by 245 · see citing works
Serum Susceptibility of Coliforms Isolated from Bovine Intramammary Infections
Hogan, J. S., Todhunter, D. A., Smith, K. L., & Schoenberger, P. S. (1989) · Journal of Dairy Science · doi:10.3168/jds.s0022-0302(89)79308-5 · Cited by 14 · see citing works
- Authors
- Poutrel, B., & Rainard, P.
- Affiliations
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (FR)
- ORCID
- Rainard, P.
- Venue
- American Journal of Veterinary Research
- Published
- 1986-09-01
- Volume
- 47
- Issue
- 9
- Pages
- 1961-1962
- ISSN
- 0002-9645 (ISSN-L)
- OpenAlex
- W2410889713
- Cited by
- 8
- References
- 0
- Citations by year
- 2025: 1
- FWCI
- 1.87
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Veterinary Research (publishedVersion)
- PubMed (publishedVersion)
- PubMed
- Topics
- Health Sciences › Veterinary › Small Animals › Animal health and immunology
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Milk Quality and Mastitis in Dairy Cows
- Life Sciences › Immunology and Microbiology › Immunology › Complement system in diseases
- Keywords
- mammary secretion, dry period, hemolytic complement activity, bactericidal activity, Escherichia coli, Holstein cows, complement inhibition
- MeSH terms
- Animals, Cattle, Complement System Proteins, Escherichia coli, Female, Hemolysis, Mammary Glands, Animal
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