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The relationship of hogg weight to the subsequent performance of Scottish Blackface ewes

Published online by Cambridge University Press:  01 September 1959

A. F. Purser  and
R. C. Roberts
A. F. Purser
Affiliation:
A.R.C. Animal Breeding Research Organisation, Edinburgh, 9
R. C. Roberts
Affiliation:
A.R.C. Animal Breeding Research Organisation, Edinburgh, 9
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Extract

The relationship of six-month weight of sheep to their subsequent performance has been studied in a Scottish Blackface flock. The various aspects of performance considered were—live-weight of the ewe at tuppings, mortality and culling rates, fleece weight, lambing and weaning percentages and weight of lamb weaned. The regressions of these characteristics on sixmonth weight all declined with increasing age of the sheep and in any case only tupping weight, fleece weight and weight of lamb weaned had an association which was statistically significant. The results for each year of life of the sheep (up to drafting age at 6½ years) were subsequently combined to show how the total production of a flock of 1,000 ewes was related to the weight of the hoggs.

Type
Research Article
Information
Animal Production , Volume 1 , Issue 2 , September 1959 , pp. 107 - 111
Copyright
Copyright © British Society of Animal Science 1959

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References

REFERENCES

Robinson, J. F., 1953. Survey of Blackface sheep. Edinburgh, H.M.S.O.Google Scholar