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Intensive beef production. 12. Replacement of concentrates with chopped dried grass

Published online by Cambridge University Press:  02 September 2010

M. Kay ,
R. Massie  and
A. MacDearmid
M. Kay
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
R. Massie
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
A. MacDearmid
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
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Summary

1. A growth trial was carried out using 24 British Friesian steers given diets containing (1) 100%, (2) 60%, (3) 40% and (4) 0% concentrates and chopped dried grass up to 100%.

2. Daily dry-matter intake was significantly lower for steers on Treatment 1 than for steers on the other three treatments.

3. Rate of live-weight gain declined from 1·18 to 0·88 kg/day and carcass gain from 625 to 430 g/day between steers on Treatments 1 and 4.

4. Killing-out percentage dropped from 55·3% (1) to 51·9% (4) and the 8th-10th rib from steers on Treatments 3 and 4 contained significantly more crude protein and less ether-extractable matter than ribs from steers on Treatments 1 and 2.

Type
Research Article
Information
Animal Production , Volume 13 , Issue 1 , February 1971 , pp. 101 - 106
Copyright
Copyright © British Society of Animal Science 1971

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References

REFERENCES

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