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A new source of Magnesium and Phosphorus for dairy heifers fed a grass silage based diet

Published online by Cambridge University Press:  20 November 2017

A S. Chaudhry ,
W. Taylor ,
J. I. Harland  and
P. Rowlinson
A S. Chaudhry
Affiliation:
Dept. of Agriculture, University of Newcastle-upon-Tyne, NE1 7RU, UK
W. Taylor
Affiliation:
Dept. of Agriculture, University of Newcastle-upon-Tyne, NE1 7RU, UK
J. I. Harland
Affiliation:
Bridge Cottage, Castle Eaton, Swindon. Wiltshire, SN6 6JZ, UK
P. Rowlinson
Affiliation:
Dept. of Agriculture, University of Newcastle-upon-Tyne, NE1 7RU, UK
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Extract

Magnesium (Mg) and Phosphorus (P) are essential for various metabolic functions of dairy heifers and thus any dietary imbalance may be detrimental for growing heifers. The most frequently used source of Mg is calcined magnesite (MgO), which has an availability of only 0.20 and is unpalatable to animals. Other inorganic sources of minerals are usually expensive, may be difficult to mix into a premix and can be unpalatable. This study compared the effect of feeding fixed amounts of two mineral mixes that had almost identical mineral levels but differed in sources to supply Mg and P, on palatability, growth and health status of growing heifers.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2001 , 2001 , pp. 137
Copyright
Copyright © The British Society of Animal Science 2001

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References

AFRC. 1980. The nutrient requirements of ruminant livestock. Commonwealth Agricultural Bureux, UK.Google Scholar
AFRC. 1991. Technical committee on responses to nutrients. Report No.6. A reappraisal of the calcium and phosphorus requirements of sheep and cattle. Nutrition Abstracts and Reviews, series B 61:573–612.Google Scholar