New Zealand Journal of Agricultural Research abstracts
Short-term alteration in voluntary feed intake after selenium supplementation
in Angora goat kids
J. J. WICHTEL1
K. G. THOMPSON2
A. L. CRAIGIE1
N. B. WILLIAMSON1
1Department of Veterinary Clinical Sciences
Massey University
Palmerston North, New Zealand
2Department of Veterinary Pathology and
Public Health
Massey University
Palmerston North, New Zealand
Abstract The objective of this study was to examine the
effect of selenium (Se) supplementation on voluntary feed intake in
Se-deficient Angora goat kids and its temporal relationship to alterations in
the concentrations of thyroid hormones in plasma and the activity of
glutathione peroxidase in serum. Angora goat kids were fed pelleted lucerne
with a Se concentration of 20 ug/kg of dry matter (DM) and treated orally
with either Se (0.1 mg/kg of liveweight weekly, as sodium selenate) or
deionised water. Supplementation with Se had no effect on DM intake measured
over 21 days. Serum activity of glutathione peroxidase was increased by Day 1
of treatment (P < 0.001), plasma concentration of thyroxine
was decreased by Day 21 of treatment (P < 0.01), and plasma
concentration of triiodothyronine was unaffected by treatment. It is concluded
that increased appetite is unlikely to be the primary mechanism involved in the
response to Se supplementation in Angora goats.
Keywords goats; selenium; dry matter intake; thyroid
hormones; glutathione peroxidase
New Zealand Journal of Agricultural Research, 1996, Vol. 39: 107-110
0028-8233/96/3901-0107 $2.50/0 (c) The Royal Society of New Zealand
1996
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