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The health and performance of the grazing animal in relation to fertilizer nitrogen usage. II. Weaned lambs

Published online by Cambridge University Press:  27 March 2009

R. V. Large  and
C. R. W. Speeding
R. V. Large
Affiliation:
The Grassland Research Institute, Hurley, Berks.
C. R. W. Speeding
Affiliation:
The Grassland Research Institute, Hurley, Berks.
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Extract

1. Experiments were carried out in 1961 and 1962 to study the effect of high levels of nitrogenous fertilizer on the health and performance of early weaned lambs. The lambs were artificially reared and grazed in a ‘worm-free’ area. In 1961, levels of Nitro-chalk were applied at 22 and 110 kg. N/hectare/month and in 1962 an intermediate level of 66 kg. N/hectare/month was added; the actual totals applied per hectare were 220,660 and 1100 kg. to treatments N1, N2 and N3 respectively. All nitrogen treatments were carried out with and without irrigation (applied to maintain a soil moisture deficit of less than 2.5 cm.).

2. Lambs were introduced to the experimental plots when 8-10 weeks of age and grazed in rotation a series of four paddocks on each treatment; a low grazing pressure was maintained at all times.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 67 , Issue 1 , August 1966 , pp. 41 - 52
Copyright
Copyright © Cambridge University Press 1966

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References

REFERENCES

Babnett, A. J. G. & Bowman, I. E. R. (1957). J. Sci. Fd Agric. 8, 243.Google Scholar
Boyd, D. A., Church, B. M. & Hills, M. G. (1963). J. Brit. Grassl. Soc. 18, 18.Google Scholar
Bradley, W. D., Eppson, H. F. & Beath, O. A. (1940). Bull. Wyo. agric. Exp. Stn. no. 241.Google Scholar
Bryant, A. M. & Ulyatt, M. J. (1965). N.Z. J. Agric. Res. 8, 109.Google Scholar
Castle, M. E. & Reid, D. (1963). J. Brit. Grassl. Soc. 18, 1.Google Scholar
Dukes, H. H. (1947). The Physiology of Domestic Animals. New York: Comstock.Google Scholar
Garner, G. B. (1963). Proc. N.Z. Soc. Anim. Prod. 23, 28.Google Scholar
Gordon, H. Mcl. (1957). Adv. Vet. Sci. 3, 296.Google Scholar
De Groot, Th. (1963) J. Brit. Grassl. Soc. 18, 112.Google Scholar
Hemingway, R. G. (1961). J. Brit. Grassl. Soc. 16, 106.Google Scholar
Hemingway, R. G. (1962). J. Brit Grassl. Soc. 17, 182.CrossRefGoogle Scholar
Hodgson, J. & Spedding, C. R. W. (1966). In preparation.Google Scholar
Jones, D. I. H. & ApGriffith, G. (1963). Rep. Welsh PI. Breed. Stn. 1963, 115.Google Scholar
Jones, D. I. H., ApGriffith, G. & Walters, R. J. K. (1965). J. Agric. Sci. 64, 323.Google Scholar
Large, R. V. (1965). J. Agric. Sci. 65, 101.Google Scholar
Large, R. V. & Spedding, C. R. W. (1965). J. Brit. Grassl. Soc. 20, 123.Google Scholar
Long, C. H., Ullrey, D. E., Miller, E. R., Vincent, B. H. & Zutaut, C. L. (1965). J. Anim. Sci. 24, 145.Google Scholar
Mcclymont, G. L., Wynne, K. N., Briggs, P. K. & Franklin, M. C. (1957). Aust. J. Agric. Res. 8, 83.Google Scholar
Moles, A. D., Thompson, G. B. & Dyer, A. J. (1958). Bull. Mo. agric. Exp. Sta. Res. no. 654, 23.Google Scholar
Ranhotra, S. G. (1964). Diss. Abstr. 25 (4), 2131.Google Scholar
Sapiro, M. L., Hoflund, S., Clark, R. & Quin, J. I. (1949). Onderstepoort J. Vet. Sci. 22, 357.Google Scholar
Sinclair, K. B. & Jones, D. I. H. (1964). J. Sci. Fd Agric. 15, 717.Google Scholar
Spedding, C. R. W., Brown, T. H. & Large, R. V. (1960). Proc. 8th Int. Grassl. Cong. Reading, 718Google Scholar
Spedding, C. R. W., Brown, T. H. & Large, R. V. (1964). J. Agric. Sci. 63, 421.Google Scholar
Spedding, C. R. W., Large, R. V., Brown, T. H. & Wilson, I. A. N. (1965). J. Agric. Sci. 64, 283.Google Scholar
Tucker, J. M., Cordy, D. R., Berby, L. J., Harvey, W. A. & Fulleb, T. C. (1961). Univ. Calif. A.E.S. Circ. no. 506.Google Scholar
Willoughby, W. M. (1958). Proc. Aust. Soc. Anim. Prod. 2, 42.Google Scholar