New Zealand Journal of Agricultural Research abstracts
Serum progesterone levels using radioimmunoassay during oestrous cycle of
indigenous Damascus does
M. ZARKAWI
A. SOUKOUTI
Division of Animal Production
Department of Agriculture
Atomic Energy Commission
P.B. Box 6091
Damascus, Syria
Abstract An experiment was conducted on Damascus does to
characterise the oestrous cycle and activity of the corpus luteum and to
determine normal progesterone patterns during different phases of the oestrous
cycle using radioimmunoassay. Fifteen 2-5-year-old indigenous cycling Damascus
does were used during the normal breeding season for two consecutive oestrous
cycles. Average length of the oestrous cycles was 21.2 +/- 1.5 days (range:
19-26 days), consisting of 2.9 +/- 0.8 days (2-5 days) where progesterone level
was low, averaging 0.69 +/- 0.85 nmol l-1 (range: 0.00-3.08 nmol
l-1), followed by a sharp increase in progesterone secretion
indicating presence of active corpora lutea which lasted an average of 15.3 +/-
1.4 days (range: 13-20 days), with an average progesterone level of 13.41 nmol
l-1 (range: 3.26-27.98 nmol l-1), followed by a sharp
decline in progesterone level, indicating inactive corpora lutea, which lasted
an average of 3.1 +/- 0.6 days (range: 2-5 days), with an average progesterone
level of 0.68 nmol l-1 (range: 0.00-2.81 nmol l-1).
Maximum progesterone level during the luteal phase averaged 18.67 +/- 3.15 nmol
l-1 (range: 14.00-27.98 nmol l-1), which, on average,
occurred on the 12.2th +/- 3.2 day of the oestrous cycle. It was possible, for
the first time, to characterise the oestrous cycle of the indigenous Damascus
doe, and to determine normal progesterone patterns during different phases of
the oestrous cycle. Based on the results reported above, it is also concluded
that progesterone levels under 3.18 nmol l-1 were found on average
during 2.9 days at the start of the oestrous cycle and during 3.1 days at the
end of the oestrous cycle (follicular phase), and that progesterone levels
above 3.18 nmol l-1 were found during the luteal phase lasting, on
average, for 15.3 days.
Keywords oestrous cycle; Damascus does; progesterone;
radioimmunoassay
New Zealand Journal of Agricultural Research, 2001, Vol. 44: 165-169
0028-8233/01/4402&3-0165 $7.00/0 (c) The Royal Society of New Zealand
2001
PDF file of entire paper: medium quality (379K); (scanned from paper original: notes about this process)
This year's abstracts |
Journal home page |
All abstracts |
Publishing home page
