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The effect of hexoestrol on nitrogen retention of lambs and on ration digestibility

Published online by Cambridge University Press:  06 May 2016

T. R. Preston ,
V. Rochanasaroj  and
Isoline Gee
T. R. Preston
Affiliation:
The Rowett Research Institute, Bucksburn, Aberdeenshire
V. Rochanasaroj
Affiliation:
The Rowett Research Institute, Bucksburn, Aberdeenshire
Isoline Gee
Affiliation:
The Rowett Research Institute, Bucksburn, Aberdeenshire
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Extract

It is now widely accepted that the subcutaneous implantation of stilboestrol or hexoestrol increases the rate of live-weight gain in lambs and cattle. In sheep it is generally considered that for a feeding period of up to 12 weeks a single implantation of hormone produces an adequate growth response. Perry et al.(1951), Stephens & Thompson (1952) and Bell et al.(1954) reported no advantage from repeated implantations during the experimental period. In a series of experiments at this Institute (Preston & Gee, 1957a) it has been noticed that the major part of the increased weight gain takes place during the first six weeks after hexoestrol implantation.

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Type
Research Article
Information
Proceedings of the British Society of Animal Production , Volume 1958 , 1958 , pp. 13 - 17
Copyright
Copyright © The British Society of Animal Production 1958

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References

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