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Hexoestrol implantation of Blackface wether lambs

Published online by Cambridge University Press:  01 March 1959

R. H. Armstrong  and
A. E. Cameron
R. H. Armstrong
Affiliation:
Hill Farming Research Organisation, Edinburgh
A. E. Cameron
Affiliation:
Hill Farming Research Organisation, Edinburgh
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Extract

1. Sixty-four Blackface wether lambs, weaned some 8 days previously from the hill were divided into two similar groups. One group of lambs was implanted with 15 mg. hexoestrol.

2. The treated lambs had gained an average of 2·32 lb., and 3·88 lb. live-weight more than the control group, after 4 and 7 weeks respectively.

3. The mean carcass weight of 23 hexoestrol-implanted lambs was 1·5 lb. greater than that of the same number of untreated lambs.

4. Carcass grading provided no evidence of a deterioration in quality as the result of hexoestrol implantation.

5. Light lambs responded at least as well as heavy lambs to the hormone.

Type
Research Article
Information
Animal Production , Volume 1 , Issue 1 , March 1959 , pp. 37 - 40
Copyright
Copyright © British Society of Animal Science 1959

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References

REFERENCES

Clegg, M. T., Albough, R., Lucas, J., & Weir, W. C., 1955. A comparison of the effect of stilbestrol on the growth response of lambs of different age and sex. J. Anim. Sci., 14: 178.CrossRefGoogle Scholar
Gill, J. C., Thomson, W., & Crichton, J. A., 1956. The effect of hexoestrol implantation on the fattening of lambs. Brit. J. Nutr., 10: 226.Google Scholar
Jordan, R. M., & Croom, H. G., 1956. The effect of various hormone implants on fattening lambs. J. Anim. Sci., 15: 1003.Google Scholar
Preston, T. R., & Gee, Isoline, 1957. Æstrogens in lamb and mutton production. Proc. Brit. Soc. Anim. Prod., 1957: 41.Google Scholar