New Zealand Journal of Agricultural Research abstracts

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Influence of Se status on milk Se concentrations in dairy cows

N. D. GRACE
J. LEE

AgResearch Grasslands
Private Bag 11008
Palmerston North, New Zealand

R. A. MILLS
A. F. DEATH

AgResearch
Flock House Agricultural Centre
Private Bag 1900
Bulls, New Zealand

Abstract  Changes in blood and milk selenium (Se) concentrations were measured in dairy cattle grazing Se-deficient pastures compared with animals grazing the same pasture but given either an intraruminal Se bolus or a barium selenate injection. The Se supplementation significantly increased and maintained the blood Se concentrations (e.g., 342 versus 1113 nmol/l) over 190-265 days during the lactation and also increased milk Se concentrations 2-fold (e.g., 77.2 versus 132.3 nmol/l).

Keywords  dairy cows; blood; milk; selenium

New Zealand Journal of Agricultural Research, 1997, Vol. 40: 75-78

0028-8233/97/4001-0075 $2.50/0 (c) The Royal Society of New Zealand 1997

PDF file of entire paper: medium quality (294K); (scanned from paper original: notes about this process)

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