Journal article

Increasing selenium concentration in milk: Effects of amount of selenium from yeast and cereal grain supplements

JW Heard, CR Stockdale, GP Walker, CM Leddin, FR Dunshea, GH McIntosh, PM Shields, A McKenna, GP Young, PT Doyle

JOURNAL OF DAIRY SCIENCE | ELSEVIER SCIENCE INC | Published : 2007

Abstract

Two experiments were conducted to establish responses in milk Se concentrations in grazing dairy cows to different amounts of dietary Se yeast, and to determine the effects of the Se concentration of the basal diet. The hypothesis tested was that the response in milk, blood, and tissue Se concentrations to supplemental Se would not be affected by whether the Se was from the basal diet or from Se yeast. In addition, by conducting a similar experiment in either early (spring; experiment 1) or late (autumn; experiment 2) lactation, we hypothesized that different Se input-output relationships would result. Both 6-wk experiments involved 60 multiparous Holstein-Friesian cows, all of which had cal..

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University of Melbourne Researchers