Influence of Grazing Intensity on Radiostrontium Concentrations in Milk

The effect of grazing intensity on radiostrontium concentrations in milk was studied by comparing milk of two groups of Holstein cows grazed rotationally. One group was included in the main herd, on a normal rotational grazing system, and the other group followed the main herd one plot behind. Milk...

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Bibliographic Details
Published in:Journal of dairy science 1966-10, Vol.49 (10), p.1219-1222
Main Authors: Burmann, Franz J., Fries, George F., Anderson, Melvin J., Stoddard, George E.
Format: Article
Language:English
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Summary:The effect of grazing intensity on radiostrontium concentrations in milk was studied by comparing milk of two groups of Holstein cows grazed rotationally. One group was included in the main herd, on a normal rotational grazing system, and the other group followed the main herd one plot behind. Milk samples from the group following the main herd showed a significant increase at the 1% level in strontium-90 units and strontium-89 units. A significant, positive linear correlation for S.U. 90 and S.U. 89 in milk between the groups was obtained. During the experimental period, a herd of Holstein cattle without access to pasture, consuming a weighed amount of feed, secreted 1.5% of their total strontium-90 intake into the milk.
ISSN:0022-0302
1525-3198
DOI:10.3168/jds.S0022-0302(66)88057-8