Heat detection

[Stihlpro]

I use CIDR's and a paint stick on the tailhead.  I have had alot of success with this over the past 4 years observing cows in the AM and PM (have to work during the day).  I have noticed that at the beginning I worried way to much and bred too early. (cow)

 

[Joe Boy]

My vet says the side winders are the best that there is some problem with the blockage ring... can't remember what he said..... old age I guess....

I have AI bred since 1979 and all I have ever done was watch.  I have noticed that one cow seems to be more aggressive in mounting than others and that cow usually guides me to the one ready.  I have found heifers are more likely to ride those in heat than older cows.  I have tried a couple of different ways to synchronize and it works pretty good, but I have had greater success with just watching.

Thanks to all who put in their two cents worth.