Hallo.
I am going to breed my giant breed girl for the second time and hope that this time it is going to be puppies.

Today she is on day 7 in heat and the first progesteron test were taken today.
It was 0,6 ng so it is early in her heat.

I am a bit curious on progesterone levels and how rapid/slow ,they can rise and when to breed.

Please tell me about your experiences.
When did you start testing and how low/high were the progesteron levels, when did you breed etc.
Thankfull for answers

I don[t know but I had my girl tested same day with same result.  She ended up being ready on day 17 and was mated days 17, 18 and 19.  She is due my biggest litter that I've had in the breed.