New Zealand Journal of Agricultural Research abstracts
The evaluation of two doses of prostaglandin F2 analogue, Prosolvin, for
oestrous synchronisation of Syrian Awassi ewes
M. ZARKAWI
Division of Animal Production
Department of Agriculture
Atomic Energy Commission
P.B. Box 6091
Damascus, Syria
Abstract An assessment was made of the effectiveness of two
doses of Prosolvin, a synthetic prostaglandin F2, on oestrous synchronisation
in local ewes during the breeding season. Thirty cycling Awassi ewes were
divided equally into three groups. Ewes in group T10 and group T15 were
injected intramuscularly twice with either 10 mg (T10) or 15 mg (T15) of
Prosolvin, with an interval of 11 days. The third group received no treatment
and served as a control group (C). Oestrus commenced in the ewes in group T10
at 83.3 +/- 42.9 hours, and in the ewes in the T15 group at 136.5 +/- 109.9
hours, after the second injection of Prosolvin. In the control group (C),
oestrus behaviour was more variable and commenced 251.2 +/- 130.9 hours after
introduction of the rams. In the time to onset of oestrus, the difference
between the effects of the two doses was not significant (P > 0.05)
but there was a significant difference (P < 0.05) between treated and
untreated ewes. The mean serum progesterone level dropped sharply within 24
hours after the treatment, from 8.48 nmol l-1 to 0.52 nmol l-1
in the ewes in group T10, and from 7.95 nmol l-1 to 0.45 nmol
l-1 in the group T15. The treatment had no effect on either the
duration of pregnancy or birth weight. It could be concluded that it is
possible to use the synthetic prostaglandin Prosolvin at doses of 10 or 15 mg
for oestrous synchronisation in local Awassi ewes during the breeding season.
Keywords Prosolvin; oestrous synchronisation; reproduction;
Awassi sheep; progesterone; radioimmunoassay
New Zealand Journal of Agricultural Research, 2000, Vol. 43: 509-514
0028-8233/00/4304-0509 $7.00/0 (c) The Royal Society of New Zealand
2000
PDF file of entire paper: medium quality (425K); (scanned from paper original: notes about this process)
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