We have always A.I'd using Cydrs & Lutalyse w/Cistorellin or Factrel. However, Silent Heat is my nemesis! ARGH! (where is a pirate when you need one?!) So, switching over now to Allflex Cow Monitoring for Heat Detection (not cheap!), eliminates the need for hormonal drugs. My question is if we do NOT use hormonal drugs disposing entirely with Cydrs & Cistorellin & such, (which of course do give the cow a big boost) will that somehow diminish our reproductive success? Thank you! (always learning!)