by shraza6719 on 12 October 2012 - 05:10
by jdiaz1791 on 12 October 2012 - 07:10
by Miro on 12 October 2012 - 08:10
0-2 nmol/L Baseline concentrations too early to estimate ovulation
3 - 6 nmol /L Minimum 2 days before ovulation expected however result of 3 - 4 nmol/L may persist for a week or longer before increasing. Earliiest estimating breeding 4 - 6 days but could be longer (re test needed)
7 - 12 nmol/L Minimum 1 day before ovulation. Estimated window for breeding 3 - 5 days but could be longer ( re test recommended)
13 - 18 nmol/L Ovulation impending or just occurred. Estimated breeding window 2 - 4 days
19 - 31 nmol/L Ovulation recently occurred. Estimated breeding window 1 - 3 days
32 - 64 nmol/L Ova have matured, optimal potential for fertility. Estimated breeding window 0 - 2 days
65 - 90 nmol/L Ova have matured but aging, decreased potential for fertility. Breed at once
Above 90 nmol/L Too late
by Diane on 13 October 2012 - 12:10
by BlackthornGSD on 13 October 2012 - 15:10
- The initial progesterone rise during estrus in the bitch coincides with the LH peak.
- Before the LH peak the progesterone is < 1.0 ng/ml.
- On the day of the LH peak, progesterone rises to around 1.5 - 2.0 ng/ml. Thereafter the progesterone is > 5 ng/ml.
- Using our lab ovulation occurs at about 3.8-5.0 ng/ml (11.7 nmol/L) of progesterone (including the day of ovulation and the 24 hours it takes to ovulate) and the best days to breed occur at about 17.6-24.1 ng/ml (54-74 nmol/L) of progesterone.
by shraza6719 on 15 October 2012 - 20:10
Is this ok?
by HighDesertGSD on 16 October 2012 - 01:10
But there are two schools of thoughts.
1. LH surge most reliable therefore about P=2.0ng/ml is LH surge
2. Ovulation is P=5mg/ml.
The practical difference between the two thoughts is likely 12 to 24 hours.
Why did you allow mating so early? Your first mating was day of LH surge. Far too early from ideal, but report is that a single natural mating any time between day of LH surge and 5 days after LH surge results in the same conception rate and litter size.
You do not need to do any more P test, but you should count the days correctly.
In your case, third and fifth day (or 4th or 6th day) after P=1.77 would have been the best two mating days.
If you trust ovulation more, then 1 and 3 days (or 2 and 4 days) after P=4 would have been the best two mating days.
by shraza6719 on 16 October 2012 - 06:10