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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
|
pubmed:dateCreated |
1988-7-12
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pubmed:abstractText |
Intramammary leucocytosis was induced by injection of Escherichia coli endotoxin via the teat canal in three lactating Holstein cows. Concentrations of alpha-lactalbumin and casein in blood serum were measured, and somatic cell concentration and yield and composition of milk were determined. Endotoxin injection elicited mean increases of 100-fold in somatic cell concentration and 50% in protein concentration, whereas milk yield declined 5-fold and lactose concentration was halved. Concentrations of alpha-lactalbumin and casein in blood rose from 80 to 1909 and 0 to 1231 ng/ml, respectively. By 96 h postinjection, all variables were approximately equal to those preinjection. In a second study, concentration of alpha-lactalbumin was determined in blood of lactating cows in two herds (n = 332) and related to milk somatic cell count. Concentrations of alpha-lactalbumin in blood were correlated with somatic cell counts (r = .60). Mean concentrations of alpha-lactalbumin increased with increasing cell count even at low somatic cell concentrations (25 to 250 X 10(3)). Concentrations of milk proteins in blood serum apparently reflect competency of the blood-milk barrier and may therefore yield an indirect measure of udder health.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0022-0302
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
71
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
826-34
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:3286699-Animals,
pubmed-meshheading:3286699-Caseins,
pubmed-meshheading:3286699-Cattle,
pubmed-meshheading:3286699-Endotoxins,
pubmed-meshheading:3286699-Escherichia coli,
pubmed-meshheading:3286699-Female,
pubmed-meshheading:3286699-Lactalbumin,
pubmed-meshheading:3286699-Lactation,
pubmed-meshheading:3286699-Leukocytes,
pubmed-meshheading:3286699-Mammary Glands, Animal,
pubmed-meshheading:3286699-Milk,
pubmed-meshheading:3286699-Milk Proteins,
pubmed-meshheading:3286699-Pregnancy,
pubmed-meshheading:3286699-Radioimmunoassay
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pubmed:year |
1988
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pubmed:articleTitle |
Relationship of milk proteins in blood with somatic cell counts in milk of dairy cows.
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pubmed:affiliation |
Department of Dairy Science, Virginia Polytechnic Institute and State University, Blacksburg 24061.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.
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