Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
1
|
| pubmed:dateCreated |
1990-4-19
|
| pubmed:abstractText |
Teat canal keratin (n = 461) and mammary gland secretions (n = 370) were collected from 31 unbred and 85 primigravid Jersey heifers from one research and three commercial dairy herds. Of 97 heifers from which secretion samples were obtained, 96.9% had intramammary infections and 29% showed clinical symptoms. Seventy-five percent of quarters were infected. Staphylococcus aureus were isolated from 36 (37.1%) heifers and 55 (14.9%) quarters. One hundred and eight (93.1%) heifers and 326 (70.7%) quarters had teat canals colonized with mastitis pathogens. Staphylococcus aureus were isolated from teat canal keratin samples from 36 (31%) heifers and 57 (12.3%) quarters. The three most common species isolated from secretion and teat canal keratin samples were Staphylococcus chromogenes, Staphylococcus hyicus, and S. aureus. Secretions from infected (n = 240) and uninfected (n = 85) quarters had SCC of 13.6 X 10(6)/ml and 5.7 X 10(6)/ml. Macrophages were the most numerous cell type in secretions of infected and uninfected quarters. Quarters with teat canal colonization, but with no intramammary infections, exhibited higher SCC in secretion (9.3 X 10(6)/ml) than quarters without both teat canal colonizations and intramammary infections (4.9 X 10(6)/ml). Data indicated that intramammary infections and teat canal colonizations were more prevalent and SCC higher than previously realized in dairy heifers.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Jan
|
| pubmed:issn |
0022-0302
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
73
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
107-14
|
| pubmed:dateRevised |
2006-11-15
|
| pubmed:meshHeading |
pubmed-meshheading:1690231-Animals,
pubmed-meshheading:1690231-Cattle,
pubmed-meshheading:1690231-Female,
pubmed-meshheading:1690231-Keratins,
pubmed-meshheading:1690231-Leukocyte Count,
pubmed-meshheading:1690231-Lymphocytes,
pubmed-meshheading:1690231-Macrophages,
pubmed-meshheading:1690231-Mammary Glands, Animal,
pubmed-meshheading:1690231-Mastitis, Bovine,
pubmed-meshheading:1690231-Neutrophils,
pubmed-meshheading:1690231-Pregnancy,
pubmed-meshheading:1690231-Pregnancy Complications, Infectious,
pubmed-meshheading:1690231-Prevalence,
pubmed-meshheading:1690231-Staphylococcal Infections,
pubmed-meshheading:1690231-Staphylococcus,
pubmed-meshheading:1690231-Staphylococcus aureus,
pubmed-meshheading:1690231-Streptococcal Infections,
pubmed-meshheading:1690231-Streptococcus
|
| pubmed:year |
1990
|
| pubmed:articleTitle |
Prevalence of intramammary infection and teat canal colonization in unbred and primigravid dairy heifers.
|
| pubmed:affiliation |
Mastitis Research Laboratory, Louisiana State University Agricultural Center, Homer 71040.
|
| pubmed:publicationType |
Journal Article
|