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The performance of weaned lambs offered diets containing different proportions of fresh perennial ryegrass and white clover

Published online by Cambridge University Press:  02 September 2010

M. J. Gibb  and
T. T. Treacher
M. J. Gibb
Affiliation:
Grassland Research Institute, Hurley, Maidenhead, Berkshire SL6 5LR
T. T. Treacher
Affiliation:
Grassland Research Institute, Hurley, Maidenhead, Berkshire SL6 5LR
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Abstract

Six weaned lambs were allocated to each of eight restricted feeding treatments with 1·00, 0·85, 0·71, 0·57, 0·43, 0·29, 0·15 or 0 of the diet as perennial ryegrass and the remainder as white clover, and to one ad libitum treatment with perennial ryegrass offered alone. A further six lambs were offered white clover ad libitum starting on day 15. Lambs on the restricted treatments received the same daily allowance of dry matter relative to live weight, adjusted at weekly intervals to allow the greatest possible intake without any rejection of herbage. Fresh cut herbage was offered daily and measurements were made over 69 days. Twelve additional lambs were slaughtered at the beginning of the experiment, and all lambs on restricted treatments were slaughtered at the end.

Increasing the proportion of clover in the diet increased the intake of nitrogen, empty-body-weight gain, carcass weight gain and nitrogen retention. When herbage was offered ad libitum, lambs ate significantly more clover than ryegrass and gained weight faster.

The weight of gut contents decreased as the proportion of clover in the diet increased. The digestibility of the organic matter, energy and nitrogen of the mixed diets simply reflected the digestibilities of the two herbages and their proportions in the mixture.

Type
Research Article
Information
Animal Production , Volume 39 , Issue 3 , December 1984 , pp. 413 - 420
Copyright
Copyright © British Society of Animal Science 1984

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References

REFERENCES

Association of Official Agricultural Chemists. 1965. Official Methods of Analysis of the Association of Official Agricultural Chemists. 10th ed. Association of Official Agricultural Chemists, Washington, DC.Google Scholar
Beever, D. E., Losada, H. R. and Cammell, S. B. 1982. Nutrient supply and utilization of fresh forages. A Rep. Grassld Res. Inst., 1981, pp. 78–80.Google Scholar
Corcuera, P. 1978. The influence of nutrition and management before weaning on the post-weaning performance of artificially-reared lambs. Ph.D. Thesis, Univ. Reading.Google Scholar
Gibb, M. J. and Treacher, T. T. 1978. The effect of herbage allowance on herbage intake and performance of ewes and their twin lambs grazing perennial ryegrass. J. agric.Sci., Camb. 90: 139–147.CrossRefGoogle Scholar
Gibb, M. J. and Treacher, T. T. 1983. The performance of lactating ewes offered diets containing different proportions of fresh perennial ryegrass and white clover. Anim. Prod. 37: 433–440.Google Scholar
Gibb, M. J., Treacher, T. T. and Shanmugalingam, V. S. 1981. Herbage intake and performance of grazing ewes and of their lambs when weanted at 6, 8, 10 or 14 weeks of age. Anim. Prod. 33: 223–232.Google Scholar
Hight, G. K. and Sinclair, D. P. 1965. The autumn growth of hoggets on different pasture types. N.Z. Jl agric. Res. 8: 1079–1086.CrossRefGoogle Scholar
Hodge, R. W. 1965. The apparent digestibility of ewes' milk by young lambs. Aust. J. exp. Agric. Anim. Husb. 5: 369–371.CrossRefGoogle Scholar
Joyce, J. P. and Newth, R. P. 1967. Use of the comparative slaughter technique to estimate the nutritive value of pasture for hoggets. Proc. N.Z. Soc. Anim. Prod. 27: 166–180.Google Scholar
Lloyd, Davies. H. 1962. Intake studies in sheep involving high fluid intake. Proc. Aust. Soc. Anim. Prod. 4: 167–171.Google Scholar
McLean, J. W., Thomson, G. G., Jagusch, K. T. and Lawson, B. M. 1965. Lamb growth and development in relation to pasture species. Proc. Ruakura Fmrs' Conf. Week, pp. 34–42.Google Scholar
Macrae, J. C. and Ulyatt, M. J. 1974. Quantitative digestion of fresh herbage by sheep. II. The sites of digestion of some nitrogenous constituents. J. agric. Sci., Camb. 82: 309–319.CrossRefGoogle Scholar
Milne, J. A., Hodgson, J., Thompson, R., Souter, W. and Barthram, G. T. 1982. The diet ingested by sheep grazing swards differing in white clover and perennial ryegrass content. Grass Forage Sci. 37: 209–218.CrossRefGoogle Scholar
Rattray, P. V. and Joyce, J. P. 1970. The nutritive value of white clover and perennial ryegrass for young sheep. I. Nitrogen retention studies and associated animal performance. N.Z. Jl agric. Res. 13: 778–791.CrossRefGoogle Scholar
Rattray, P. V. and Joyce, J. P. 1974. Nutritive value of white clover and perennial ryegrass. IV. Utilisation of dietary energy. N.Z. Jl agric. Res. 17: 401–406.CrossRefGoogle Scholar
Schneider, B. H. and Flatt, W. P. 1975. The Evaluation of Feeds through Digestibility Experiments, pp. 168–178. The University of Georgia Press, Athens, Georgia.Google Scholar
Sinclair, D. P., Clark, E. A. and Filmer, D. B. 1956. A comparison of hogget thrift on perennial ryegrass and white clover. Proc. N.Z. Soc. Anim. Prod. 16: 23–30.Google Scholar
Tilley, J. M. A. and Terry, R. A. 1963. A two-stage technique for the in vitro digestion of forage crops. J. Br. Grassld Soc. 18: 104–111.CrossRefGoogle Scholar
Ulyatt, M. J. 1969. Progress in defining the differences in nutritive value to sheep of perennial ryegrass, short-rotation ryegrass and white clover. Proc. N.Z. Soc. Anim. Prod. 29: 114–123.Google Scholar
Ulyatt, M. J. 1971. Studies on the causes of the differences in pasture quality between perennial ryegrass, short-rotation ryegrass, and white clover. N.Z. Jl agric. Res. 14: 352–367.CrossRefGoogle Scholar