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The effect of diet in winter on the body composition of young steers and subsequent performance during the grazing season

Published online by Cambridge University Press:  02 September 2010

R. D. Baker ,
N. E. Young  and
J. A. Laws
R. D. Baker
Affiliation:
AFRC Institute of Grassland and Environmental Research, Hurley Research Station, Maidenhead SL6 5LR
N. E. Young
Affiliation:
AFRC Institute of Grassland and Environmental Research, North Wyke Research Station, Okehampton EX20 2SB
J. A. Laws
Affiliation:
AFRC Institute of Grassland and Environmental Research, North Wyke Research Station, Okehampton EX20 2SB
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Abstract

Friesian steer calves born in August were reared from 3 to 7 months of age on silage alone (S) or on silage and concentrates to supply metabolizable energy (ME) in the proportion of 0·5: 0·5 (55) or 0·1: 0·9 (19). The mixed diets were either offered to appetite (55A and 19A) or restricted to provide the same energy intake as the S group (55R and 19R). The cattle were then grazed for a 6-month period as a single group. During the winter the S, 55R and 19R groups had similar live-weight gains. Despite having the highest nitrogen intakes the S group deposited less protein, but more fat than the other two groups. There were no significant differences within A or R groups, but the A groups had higher live weights, empty-body weights and carcass weights than the R groups and had more fat and less protein per kg empty body weight at turn-out to grazing.

Compensatory growth was exhibited by the S, 55R and 19R groups during the grazing season. It arose because of differences in intake and not because of differences in the energy content of the gain. Intake was inversely related to the level of fat per kg empty body weight at the start of grazing. There was no evidence that the nature of the diet in winter had an effect on subsequent herbage intake.

It was concluded that diet per se in winter had no residual effect on intake at grazing, but that it did have direct and residual effects on the relative deposition of fat and protein which could lead to an association between the level of fat in the empty body and intake. Inefficient use of nitrogen from silages with moderate fermentation characteristics was also demonstrated.

Keywords

body compositiongrazinggrowthsilagesteers
Type
Research Article
Information
Animal Production , Volume 54 , Issue 2 , April 1992 , pp. 211 - 219
Copyright
Copyright © British Society of Animal Science 1992

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References

Agricultural Research Council. 1980. Requirements for energy. In Nutrient requirements of ruminant livestock, pp 73–119. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Baker, R. D., Gibb, M. J. and Young, N. E. 1984. Fat and protein retention by steers on silage based diets and subsequent performance at grass. Proceeding of the 7th conference, Belfast, pp. 51–52.Google Scholar
Baker, R. D., Young, N. E. and Laws, J. A. 1985. Changes in the body composition of cattle exhibiting compensatory growth and the modifying effects of grazing management. Animal Production 40: 309–321.Google Scholar
Forbes, J. M. 1980. Hormones and metabolites in the control of food intake. In Digestive physiology and metabolism ruminants (ed. Ruckebusch, Y., Thivend, P.), pp. 145–160. MTP Press, Lancaster.CrossRefGoogle Scholar
Fox, D. G., Johnson, R. R., Preston, R. L., Dockerty, T. R. and Klosterman, E. W. 1972. Protein and energy utilization during compensatory growth in beef cattle. Journal of Animal Science 34: 310–318.CrossRefGoogle Scholar
Grassland Research Institute. 1980. Annual report, 1979, p. 78. Grassland Research Institute, Hurley.Google Scholar
Hodgson, J. and Rodrigez Capriles, J. M. 1971. The measurement of herbage intake in grazing studies. Annual report, Grassland Research Institute, 1970, pp. 132–140.Google Scholar
Hodgson, J., Tayler, J. C. and Lonsdale, C. R. 1971. The relationship between intensity of grazing and the herbage consumption and growth of calves. Journal of the British Grassland Society 26: 231–237.CrossRefGoogle Scholar
Holmes, C. W. 1974. The Massey Grass-meter. Dairy Farming Annual, pp. 26–30.Google Scholar
Le Du, Y. L. P. and Baker, R. D. 1978. A note on the effect of milk consumption prior to weaning upon the silage intake and performance of weaned ‘suckled’ calves. Animal Production 27: 117–120.Google Scholar
Liscombe Experimental Husbandry Farm. 1965. Farm Report and Guide. Liscombe EHF, Dulverton, Somerset.Google Scholar
Ministry of Agriculture, Fisheries and Food. 1986. Feed composition. UK tables of feed composition and nutritive for ruminants. Chalcombe Publications, Marlow Bottom.Google Scholar
Moran, J. B. and Holmes, W. 1978. The application of compensatory growth in grass/cereal beef production systems in the United Kingdom. World Review of Animal Production 14: (2), 65–73.Google Scholar
O'Donovan, P. B. 1984. Compensatory gain in cattle and sheep. Nutrition Abstracts and Reviews — Series B 54: 389–410.Google Scholar
Payne, E. and Morris, J. G. 1969. The effect of protein content of the diet and rate of urea formation in sheep liver. Biochemistry Journal 113: 659–662.CrossRefGoogle ScholarPubMed
Roy, J. H. B. 1958. Calves (dairy and beef). In Scientific principles of feeding farm livestock, pp. 48–75. Farmer and Stockbreeder Publications, London.Google Scholar
Searle, T. W. and Griffiths, D. A. 1983. Equations for postnatal chemical composition of the fat-free empty body of sheep and cattle. Journal of Agricultural Science, Cambridge 100: 693–699.CrossRefGoogle Scholar
Tayler, J. C. 1959. A relationship between weight of internal fat, ‘fill’, and the herbage intake of grazing cattle. Nature, London 184: 2021–2022.CrossRefGoogle Scholar
Tilley, J. H. A. and Terry, R. A. 1963. A two-stage technique for the in vitro digestion of forage crops. Journal of the British Grassland Society 18: 104–111.CrossRefGoogle Scholar
Wilson, P. N. and Osbourn, D. F. 1960. Compensatory growth after undernutrition in mammals and birds. Biological Review 35: 324–363.CrossRefGoogle ScholarPubMed
Wright, I. A., Russel, A. J. F. and Hunter, E. A. 1986. The effect of winter food level on compensatory growth of weaned, suckled calves grazed at two sward heights. Animal Production 43: 211–223.Google Scholar