Tony -- the reason a Cidr will work as good as it does, it beause it increases the systemic Progesterone levels, warding off any high level of Estrogren, and forcing the system to HOLD a CL longer than normal. In your case here, she will grow a CL normally any way in 7 days, and the Cidr will only help her make a good one.
Rule of thunmb -- a cow must be at least 6-7 days past her normal heat to be viable for a recycle. No progesterone, no heat from prostoglandins.
If you used the Gnrh - Cidr - Prostoglandin program, the Gnrh will make sure she ovulated on time, then the whole system is reset.
Normally speaking -- Jill is right -- most cows might not work well by re-shooting in 7 days past her natrual heat -- some do. The Cidr will deffinately help get that done, and you should be OK to go.
You are right -- we are all busy now -- so timing is everything -- we just can't have a mix up once things are scheduled, simply no time to fit it in later once the calender is full! Best of luck up there --
Terry
PS -- as I was typing this -- the new post came in from Diamond S -- yes that is also correct -- assuming she ovulatres on time with no hold ups -- you MAY be alright to not put in a Cidr and just give her a shot wit hthe rest. Keep this in mind however -- important -- Non Cidr implanted cows will take close to 72 hours to cycle off of one shot of Lut -- Cidr cows will cycle in 48 hours +/-. That means you will need to give her a shot one day earlier than the rest -- and if you do, she will only be 6 days from heat. She may not have had enough time to build a good CL and thus -- won't regress it and come back for you!! Don't you love technology???
