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Relation of concentration of growth hormone in blood plasma to growth rate and carcass characteristics in the pig

Published online by Cambridge University Press:  02 September 2010

R. J. Chappel  and
A. C. Dunkin
R. J. Chappel
Affiliation:
Russell Grimwade School of Biochemistry, University of Melbourne, Parkville, Victoria 3052, Australia
A. C. Dunkin
Affiliation:
Pig Research Unit, Mt Derrimut Field Station, University of Melbourne, Deer Park, Victoria 3023, Australia
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Summary

1. Pig growth hormone (PGH) concentrations were measured in plasma samples from piglets of 3–4 to 7–8 weeks of age.

2. Plasma PGH concentrations decreased significantly with age. No difference was observed between the hormone concentrations of gilts and barrows.

3. Correlation coefficients were calculated between mean plasma growth hormone concentration over a 4-week period and several carcass characteristics and measures of growth rate. Plasma PGH over this period showed significant negative correlations with several measures of carcass backfat thickness at bacon weight. In barrows only, PGH concentrations showed a significant direct correlation with relative growth rate from 3 to 7 weeks.

Type
Research Article
Information
Animal Production , Volume 20 , Issue 1 , February 1975 , pp. 51 - 61
Copyright
Copyright © British Society of Animal Science 1975

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References

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