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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.

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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