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Effects of a high level of nitrogenous fertilizer and date of cutting on the availability of the magnesium and calcium of herbage to sheep

Published online by Cambridge University Press:  27 March 2009

J. L. L'Estrange ,
J. B. Owen  and
D. Wilman
J. L. L'Estrange
Affiliation:
School of Agriculture, University of Cambridge
J. B. Owen
Affiliation:
School of Agriculture, University of Cambridge
D. Wilman
Affiliation:
School of Agriculture, University of Cambridge
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Extract

1. Herbage harvested from 17 April to 3 July, at approximately 3 weeks after defoliation, from a succession of high-nitrogen paddocks (1001b. nitrogen in March and 60 lb. nitrogen at monthly intervals thereafter, all as Nitro-chalk) and from corresponding low-nitrogen paddocks (40 lb. nitrogen as Nitro-chalk in early March only) was fed to two wethers, and the availability of magnesium and calcium were measured in a series of balance trials.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 68 , Issue 2 , April 1967 , pp. 173 - 178
Copyright
Copyright © Cambridge University Press 1967

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References

REFERENCES

Field, A. C., McCallum, J. W. & Butler, E. J. (1958). Studies on magnesium in ruminant nutrition. Balance experiments on sheep with herbage from fields associated with lactation tetany and from control pastures. Br. J. Nutr. 12, 433–46.CrossRefGoogle ScholarPubMed
Kemp, A., Deijs, W. B., Hemkes, O. J. & Van Es, A. J. H. (1961). Hypomagnesaemia in milking cows: intake and utilisation of magnesium from herbage by lactating cows. Neth. J. Agric. Sci. 9, 134—49.Google Scholar
L'Estrange, J. L. & Axford, R. F. E. (1966). Mineral balance studies on lactating ewes with particular reference to the metabolism of magnesium. J. agric. Sci., Camb. 67, 295–304.Google Scholar
L'Estrange, J. L., Owen, J. B. & Wilman, D. (1967). The relationship between the serum magnesium concentration of grazing ewes and their dry matter intake and milk yield. J. agric. Sci., Camb. 68, 165–171.Google Scholar
L'Estrange, J. L. & Axford, R. F. E. (1964). A study of magnesium and calcium metabolism in lactating ewes fed a semi-purified diet low in magnesium. J. agric. Sci., Camb., 62, 353–68.Google Scholar
Rook, J. A. F. & Campling, R. C. (1962). Magnesium metabolism in the dairy cow. 4. The availability of the magnesium in various feedingstuffs. J. agric. Sci., Camb. 59, 225–32.Google Scholar
Rook, J. A. F. & Balch, C. C. (1958). Magnesium metabolism in the dairy cow. II. Metabolism during the Spring grazing season. J. agric. Sci., Camb. 51, 199–207.CrossRefGoogle Scholar
Rook, J. A. F., Balch, C. C. & Line, C. (1958). Magnesium metabolism in the dairy cow. 1. Metabolism on stall rations. J. agric. Sci., Camb. 51, 189–98.CrossRefGoogle Scholar
Stillings, B. R., Bratzler, J. W., Marriott, L. F. & Miller, R. C. (1964). Utilization of magnesium and other minerals by ruminants consuming low and high nitrogen-containing forages and vitamin D. J. Anim. Sci. 23, 1148–54.Google Scholar
Suttle, N. F. & Field, A. C. (1966). Effect of water intake on the metabolism of magnesium in the sheep. Proc. Nutr. Soc. 25, xx.Google Scholar
Todd, J. R. (1959). The determination of calcium and magnesium in blood serum by direct titration. Br. vet. J. 115, 86–9.CrossRefGoogle Scholar
Wood, T. B. & Woodman, H. E. (1921). The digestibility of oat and tare silage. J. agric. Sci., Camb. 11, 304–9.CrossRefGoogle Scholar