Abstract
THE use of a capacitance meter to measure the amount1, wet and dry matter content2 and water content3 of pasture herbage has been described previously. As similar data are of interest in farm animals4,5, an apparatus was designed by two of us (D.S.M.P. and G. de la M. N.) to measure the capacitance and resistance of live lambs. The instrument essentially consists of two parallel plates of aluminium foil 3 ft. square backing on bakelite sheets 12 in. apart. Capacitance and resistance measurements were taken on a Wayne Kerr radio frequency bridge B601 at a frequency of 5 Mc/s. The plate nearer the operator was earthed and he had to keep a constant position while readings were being taken on lambs. A background reading was taken before and after each lamb recording and the mean of the two background readings was subtracted from the measurement for each lamb to give those reported here. Duplicate runs were made on each series of lambs and the mean of the two observations has been used in all calculations.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Fletcher, J. E., and Robinson, M. E., J. Range Mgmt., 9, 96 (1956).
Campbell, A. G., Phillips, D. S. M., and O'Reilly, E. D., J. Brit. Grasslands Soc., 17, 89 (1962).
Alcock, M. B., Symposium on Crop Efficiency, Welsh Plant Breeding Station, Bangor (1964).
Harrington, G., Pig Carcass Evaluation, Tech. Comm. No. 12, Common-wealth Agricultural Bureaux, Farnham Royal, Bucks, England (1958).
Kirton, A. H., Proc. N.Z. Soc. Anim. Prod., 24, 77 (1964).
Kirton, A. H., Barton, R. A., and Rae, A. L., J. Agric. Sci., 58, 381 (1962).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
KIRTON, A., DE LA MARE NICHOLS, G. & PHILLIPS, D. Estimation of Body-weight, Carcass Weight and Carcass Composition of Live Lambs with a Radio Frequency Bridge. Nature 206, 940–941 (1965). https://doi.org/10.1038/206940a0
Issue Date:
DOI: https://doi.org/10.1038/206940a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.