title: [Selenium deficiency without clinical symptoms in young cattle on a dairy farm].
abstract: On a dairy farm a selenium deficiency was diagnosed on the basis of the blood chemistry of heifer calves. Of ten heifers, aged five to fourteen months, six animals had a glutathione peroxidase (GSH-PX) activity lower than 10 U/gHb. A good correlation was found between this low GSH-Px-activity and the selenium concentration in the blood. The animals had no symptoms of selenium deficiency nor elevated CPK levels. On the basis of the vitamin E-concentration in the blood it is postulated that the lack of symptom is mainly caused by the amount of vitamin E in the ration (grass and grass silage).
authors.affiliation: Gezondheidsdienst voor Dieren in West- en Midden-Nederland, Gouda.
authors.forename: J
authors.initials: J
authors.lastname: Veling
authors.forename: G H
authors.initials: GH
authors.lastname: Counotte
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D002417:Cattle / Q000097:blood*; D003612:Dairying; D005260:Female; D005979:Glutathione Peroxidase / Q000097:blood; D012643:Selenium / Q000097:blood / Q000172:deficiency*; D014810:Vitamin E / Q000032:analysis / Q000097:blood
chemical_list: D014810:Vitamin E; D005979:Glutathione Peroxidase; D012643:Selenium
vernacular_title: Seleendeficiëntie zonder klinische symptomen bij jongvee op een melkveebedrijf.