Factors affecting serum selenium and vitamin E concentrations in dairy cows

G. Y. Miller, P. C. Bartlett, R. J. Erskine, K. L. Smith

Research output: Contribution to journalArticlepeer-review

Abstract

Supplementation of selenium and vitamin E to enhance disease resistance in dairy cattle has become common, particularly to prevent periparturient reproductive disorders and mastitis. To establish reference values for serum vitamin E and selenium concentrations in postparturient dairy cattle and to determine whether serum concentrations of these micronutrients varied with season and stage of lactation, cows from a stratified random sample of 50 herds were studied for 1 year. Blood samples were collected from each of the 50 study herds twice, from the 10 most recently parturient cows or from 10% of the herd, whichever was greatest. Mean concentration of vitamin E and selenium was 2.55 μg/ml and 78.12 ng/ml, respectively. Vitamin E concentrations were significantly (P < 0.05) higher during the summer and fall than during the winter and spring. Selenium concentrations were significantly (P < 0.05) lower during the summer and fall than during the winter and spring. Herd, season of blood sample collection, and time since parturition were significant (P < 0.02) in explaining variation in vitamin E and selenium concentrations.

Original languageEnglish (US)
Pages (from-to)1369-1373
Number of pages5
JournalJournal of the American Veterinary Medical Association
Volume206
Issue number9
StatePublished - Jan 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • veterinary(all)

Fingerprint

Dive into the research topics of 'Factors affecting serum selenium and vitamin E concentrations in dairy cows'. Together they form a unique fingerprint.

Cite this