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Production responses of lambs immunized against somatostatin

Published online by Cambridge University Press:  02 September 2010

A. S. Zainur ,
R. M. Hoskinson  and
R. C. Kellaway
A. S. Zainur
Affiliation:
M. C. Franklin Laboratory, Department of Animal Science, University of Sydney, Camden, New South Wales 2570, Australia
R. M. Hoskinson
Affiliation:
M. C. Franklin Laboratory, Department of Animal Science, University of Sydney, Camden, New South Wales 2570, Australia
R. C. Kellaway
Affiliation:
M. C. Franklin Laboratory, Department of Animal Science, University of Sydney, Camden, New South Wales 2570, Australia
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Abstract

The production responses of crossbred lambs [Poll Dorset (♂ × (Border Leicester ♂ × Merino ♀)] immunized against somatostatin (sornatotropin release inhibiting factor; SRIF) and whose mothers were also given anti-somatostatin vaccination was investigated in this study. There were no significant differences between immunized and control lambs in term of live-weight gain, food intake, food conversion efficiency, digestibility, eating pattern, wool growth and carcass composition. The concentration of growth hormone in plasma of immune lambs was not significantly elevated, even though the lambs had a generally increasing anti-SRIF antibody titre during the experiment. The findings suggest that although the lambs were successfully immunized against SRIF, homeorhetic mechanisms maintained growth hormone and productivity traits within normal levels.

Keywords

food intakegrowthimmunizationsomatostatin
Type
Papers
Information
Animal Production , Volume 53 , Issue 3 , December 1991 , pp. 339 - 344
Copyright
Copyright © British Society of Animal Science 1991

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