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The effect of energy, protein and vitamin supplementation on the performance and voluntary intake of barley straw by cattle

Published online by Cambridge University Press:  02 September 2010

T. Lyons ,
P. J. Caffrey  and
W. J. O'Connell
T. Lyons
Affiliation:
University College, Dublin, Lyon's Estate, Celbridge, Co. Kildare, Eire
P. J. Caffrey
Affiliation:
University College, Dublin, Lyon's Estate, Celbridge, Co. Kildare, Eire
W. J. O'Connell
Affiliation:
University College, Dublin, Lyon's Estate, Celbridge, Co. Kildare, Eire
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Summary

1. Daily allowances of 1·37 kg of concentrates, containing either 8·9 (treatment A), 13·6 (B), 19·1 (C) or 29·2% crude protein (D) were given to 40 individually-fed steers eating long barley straw to appetite over a 112-day winter feeding period. Voluntary straw intake on treatment B was 25% higher than that on treatment A. There were no signiicant differences in straw intake between treat-ments B, C, and D. Mean daily live-weight gains (kg) for the treatment groups were A, −0·22; B, 0·05; C, 0·04; D, 0·15. When the animals were turned out to pastore, group A showed very rapid compensatory growth, and it was concluded that this was mainly due to differences between the groups in their changes in alimentary tract contents. Vitamin A and D supplementation did not affect straw intake or performance.

2. When the above supplements were given to steers in metabolism crates receiving barley straw in restricted or unrestricted quantities, it was found that an increase in the crude-protein content of the supplement significantly increased the digestibility of the organic matter, crude fibre and crude protein of the whole diet when straw intake was restricted, and significantly increased the digestibility of crude fibre and crude protein when straw was unrestricted.

3. It was concluded that voluntary straw intake was limited, at the lowest level of supplementary protein, by a deficiency of absorbed protein. At the higher levels of supplementary protein, intake was probably limited by the capacity of the alimentary tract.

Type
Research Article
Information
Animal Production , Volume 12 , Issue 2 , May 1970 , pp. 323 - 334
Copyright
Copyright © British Society of Animal Science 1970

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References

REFERENCES

Abou Akkada, A. R. and El-Shazly, K. 1958. Studies of the nutritive value of some common Egyptian feedingstuffs. J. agric. Sci., Camb. 51: 157–163.CrossRefGoogle Scholar
Alderman, G. 1968. Using the A.R.C, metabolizable energy system for ruminant rations. N.A.A.S. Q. Rev. no. 81, pp. 35–42.Google Scholar
Association Of Official Agricultural Chemists. 1965. Official Methods of Analysis. Association of Official Agricultural Chemists, Washington, D.C.Google Scholar
Agricultural Research Council, 1965. The Nutrient Requirements ofFarm Livestock. No. 2 Ruminants. Agricultural Research Council, London.Google Scholar
Balch, C. C. and Campling, R. C. 1962. Regulation of voluntary food intake in ruminants. Nutr. Abstr. Rev. 32: 669–686.Google ScholarPubMed
Balch, C. C. and Johnson, V. W. 1948. Pneumatic cannula and bung for rumen fistulae. Vet. Rec. 60: 446–447.Google ScholarPubMed
Blaxter, K. L. and Wilson, R. S. 1963. The assessment of a crop husbandry technique in terms of animal production. Anim. Prod. 5: 27–43.Google Scholar
Bridge, P. S. and Spratling, F. R. 1965. In Recent Advances in Animal Nutrition (ed. Abrams, J. T.). Churchill, London.Google Scholar
Campling, R. C., Freer, M. and Balch, C. C. 1962. The effect of urea on the voluntary intake of oat straw. Br. J. Nutr. 16: 115–124.CrossRefGoogle ScholarPubMed
Conway, E. J. 1950. Microdiffusion Analysis and Volumetric Error, p. 95. Crosby Lockwood, London.Google Scholar
Coombe, J. B. and Tribe, D. E. 1963. The effects of urea supplements on the utilization of straw plus molasses diets by sheep. Aust. J. agric. Res. 16: 70–92.CrossRefGoogle Scholar
Duncan, D. L. 1966. In Recent Advances in Animal Nutrition (ed. Abrams, J. T.). Churchill, London.Google Scholar
Egan, A. R. 1965a. The fate and effects of duodenally infused casein and urea nitrogen in sheep fed on a low-protein roughage. Aust. J. agric. Res. 16: 169–177.CrossRefGoogle Scholar
Egan, A. R. 1965b. The relationship between improvement of nitrogen status and increase in voluntary intake of low-protein roughages by sheep. Aust. J. agric. Res. 16: 463–472.CrossRefGoogle Scholar
Elliott, R. C. and Topps, J. H. 1963. Voluntary intake of low-protein diets by sheep. Anim. Prod. 5: 269–277.Google Scholar
European Association For Animal Production. 1969. Methods for determination of digestibility coefficients of feeds for ruminants. Rep. Study Commission on Animal Nutrition No. 1.Google Scholar
Graham, N. McC. 1967. The net energy value of three subtropical forages. Aust. J. agric. Res. 18: 137–147.Google Scholar
Hemsley, J. A. and Moir, R. J. 1963. The influence of higher volatile fatty acids on the intake of urea supplemented low quality cereal hay by sheep. Aust. J. agric. Res. 14: 509–517.CrossRefGoogle Scholar
Hungate, R. E. 1966. The Rumen and Its Microbes. Chap. 5. Academie Press, New York.Google Scholar
Minson, D. J. and Pigden, W. J. 1961. Effect of continuous supply of urea on utilization of low quality forages. J. Anim. Sci. 20: 962 (Abstr.).Google Scholar
Pieterse, P. J. S. 1967. In Urea as a Protein Supplement. (ed. Briggs, M. H.). Pergamon Press, London.Google Scholar
Weston, R. H. 1967. Factors limiting intake of feed by sheep. Aust. J. agric. Res. 18: 983–1002.CrossRefGoogle Scholar
Williams, C. H., David, D. J. and Iismaa, O. 1962. The determination of chromic oxide in faeces samples by atomic absorption spectrophotometry. J. agric. Sci., Camb. 59: 381–386.CrossRefGoogle Scholar
Wilson, P. N. and Osbourn, D. F. 1960. Compensatory growth after undernutrition in mammals and birds. Biol. Rev. 35: 324–363.CrossRefGoogle ScholarPubMed