Hostname: page-component-848d4c4894-4hhp2 Total loading time: 0 Render date: 2024-05-14T04:45:57.155Z Has data issue: false hasContentIssue false

The voluntary intake of silage by sheep:III. The effects of post-ruminal infusions of casein on the intake and nitrogen retention of sheep given silage ad libitum

Published online by Cambridge University Press:  27 March 2009

K. J. Hutchinson
Affiliation:
The Grassland Research Institute, Hurley, Maidenhead, Berk S16 5LR
R. J. Wilkins
Affiliation:
The Grassland Research Institute, Hurley, Maidenhead, Berk S16 5LR
D. F. Osbourn
Affiliation:
The Grassland Research Institute, Hurley, Maidenhead, Berk S16 5LR

Summary

Isocaloric quantities of casein, and glucose were infused into the abomasum and duodenum of sheep given perennial ryegrass silage ad libitum. Casein infusion significantly increased nitrogen retention but failed to affect silage consumption, suggesting that the positive relationship found between silage intake and silage nitrogen content is unlikely to be due to a low nitrogen status in sheep fed all-silage rations.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1971

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Association of Official Agricultural Chemists (1965). Official Methods of Analyses of the Association of Official Agricultural Chemists, 10th ed.Google Scholar
Blaxter, K. L., Wainman, F. W. & Wilson, R. S. (1961). The regulation of food intake by sheep. Anim. Prod. 3, 5162.Google Scholar
Dewar, W. A. & McDonald, P. (1961). Determination of dry matter in silage by distillation with toluene. J. Sci. Fd Agric. 12, 790–5.CrossRefGoogle Scholar
Egan, A. R. (1965). Nutritional status and intake regulation in sheep. II. The influence of sustained duodenal infusions of casein or urea upon voluntary intake of low-protein roughages by sheep. Aust. J. agric. Res. 16, 451–62.CrossRefGoogle Scholar
Egan, A. R. (1966). Nutritional status and intake regulation in sheep. V. Effects of intraruminal infusions of volatile fatty acids upon voluntary intake of roughage by sheep. Aust. J. agric. Res. 17, 741–55.CrossRefGoogle Scholar
Elsden, S. R. & Gibson, Q. H. (1954). The estimation of lactic acid using ceric sulphate. Biochem. J. 58, 154–8.CrossRefGoogle ScholarPubMed
Fatianoff, N., Durand, M., Tisserand, J. L. & Zelter, S. Z. (1966). Comparative effects of wilting and of sodium metabisulphite on quality and nutritive value of alfalfa silage. Proc. 10th Int. Qrassld Congr., Helsinki, pp. 551–5.Google Scholar
Gordon, C. H., Derbyshire, J. C., Wiseman, H. G., Kane, E. A. & Melin, C. G. (1961). Preservation and feeding value of alfalfa stored as hay, haylage and direct as silage. J. Dairy Sci. 44, 12991311.CrossRefGoogle Scholar
Harris, C. E. & Raymond, W. F. (1963). The effect of ensilage on crop digestibility. J. Br. Qrassld Soc. 18, 204–12.CrossRefGoogle Scholar
McDonald, P., Edwards, R. A. & Greenhalgh, J. F. D. (1966). Animal Nutrition. Edinburgh: Oliver and Boyd.Google Scholar
McDonald, P., Watson, S. J. & Whittenbuby, R. (1966). The principles of ensilage. Z. Tierphysiol. Tierernahr. Futtermittelk. 21, 103–10.CrossRefGoogle Scholar
Moore, L. A., Thomas, J. W. & Sykes, J. F. (1960). The acceptability of grass/legume silage by dairy cows. Proc. 8th Int. Qrassld Congr., Reading, pp. 701–4.Google Scholar
Thomson, D. J. (1966). The voluntary intake of hay and silage by sheep. Anim. Prod. 8, 351.Google Scholar
Thomson, D. J. (1968). The digestibility and utilization of fresh grass, hay and silage by sheep. Anim. Prod. 10, 240.Google Scholar
Weston, R. H. (1967). Factors limiting the intake of feed by sheep. II. Studies with wheaten hay. Aust. J. agric. Res. 18, 9831002.CrossRefGoogle Scholar
Weston, R. H., & Hogan, J. P. (1968). Factors limiting the intake of feed by sheep. IV. The intake and digestion of mature ryegrass. Aust. J. agric. Res. 19, 567–76.CrossRefGoogle Scholar
Wilkins, R. J., Hutchinson, K. J., Wilson, R. F. & Harris, C. E. (1971). The voluntary intake of silage by sheep. I. Interrelationships between silage composition and intake. J. agric. Sci., Camb. 77, 531–7.CrossRefGoogle Scholar
Zeman, W. V. (1966). New device for permanent cannulation of the gall-bladder, urinary bladder, stomach and intestine of dogs. Applications and biological investigation. Surgery, St Louis 59, 387–96.Google ScholarPubMed