We are synchronizing heifers with this protocol and I had always been under the assumption that heat detection at morning and night for the first three days is adequate, prior to the timed A.I. on day 3. However, I read in an article while browsing the interwebs that additional heat detection is recommended. I've never heard of that but I'm no old hand at this. I wondered if any experts would insist that the extra heat detection should be standard protocol. Thanks for any help.