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Intensive beef production: 10. Replacement of cereals with chopped straw

Published online by Cambridge University Press:  02 September 2010

M. Kay ,
A. Macdearmid  and
N. A. MacLeod
M. Kay
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
A. Macdearmid
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
N. A. MacLeod
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
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Summary

1. Two growth trials and a digestibility trial were carried out with 48 Friesian steers given diets containing approximately 5, 20, 35 and 50% chopped barley straw and concentrates up to 100%.

2. Rates of live-weight gain between 130 and 400 kg declined from 1·18 to 0·65 kg/day and carcass gain declined from 0·62 to 0·30 kg/day as the straw content of the diet increased from 5 to 50%.

3. Alimentary tract ‘fill’ increased from 10·5% of live weight with 5% straw to 21% of live weight with 50% straw, and killing-out percentage dropped from 55·5% to 48·3%.

4. Both dry-matter digestibility and apparent nitrogen digestibility were lowest for the diet with 50% straw.

Type
Research Article
Information
Animal Production , Volume 12 , Issue 2 , May 1970 , pp. 261 - 266
Copyright
Copyright © British Society of Animal Science 1970

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References

REFERENCES

Agricultural Research Council. 1965. The Nutrient Requirements of Farm Livestock. No. 2. Ruminants. Agricultural Research Council, London.Google Scholar
Andrews, R. P., Kay, M. and Ørskov, E. R. 1969. The effect of different dietary energy concentrations on the voluntary intake and growth of intensively-fed lambs. Anim. Prod. 11: 173–185.Google Scholar
Association Of Official Agricultural Chemists. 1965. Official Methods of Analysis. Association of Official Agricultural Chemists, Washington, D.C.Google Scholar
Bowers, H. B., Preston, T. R., McDonald, L., MacLeod, N. A. and Philip, Euphemia B. 1965. Intensive beef production. 4. The efect on nitrogen retention of all-concentrate diets containing different levels of fish meal. Anim. Prod. 7: 19–25.Google Scholar
Kay, M., Kilkenny, J. B., Sutherland, E. and Walsh, J. P. 1968. The Intensive Cereal Beef System using Calves from the Dairy Herd. Handbook No. 2. Meat and Livestock Commission, Bletchley, Bucks.Google Scholar
Lamming, G. E., Swan, H. and Clarke, R. T. 1966. Studies on the nutrition of ruminants. 1. Substitution of maize by milled barley straw in a beef fattening diet and its effect on performance and carcass quality. Anim. Prod. 8: 303–312.Google Scholar
Lodge, G. A. 1966. Feeding indoor sheep. Agriculture 73: 113–117.Google Scholar
McCullough, T. A. 1969. A study of factors affecting the voluntary intake of food by cattle. Anim. Prod. 11: 145–154.Google Scholar
Montgomery, M. J. and Baumgardt, B. R. 1965. Regulation of food intake in ruminants. I. Pelleted ratíons varying in energy concentration. J. Dairy Sci. 48: 1623–1628.CrossRefGoogle ScholarPubMed
Owen, J. B., Davies, D. A. R., Miller, E. L. and Ridgman, W. J. 1967. The intensive rearing of lambs. 2. Voluntary food intake and performance on diets of varying oathusk and beef tallow content. Anim. Prod. 9: 509–520.Google Scholar
Owen, J. B. and Ridgman, W. J. 1968. Further studies of the effect of dietary energy content on the voluntary intake of pigs. Anim. Prod. 10: 85–91.CrossRefGoogle Scholar
Swan, H. and Lamming, G. E. 1967. Studies on the nutrition of ruminants. 2. The effect of level of crude fibre in maize-based rations on the carcass composition of Friesian steers. Anim. Prod. 9: 203–208.Google Scholar