Reproductive outcomes in Holstein heifers synchronized with timed‐<scp>AI</scp> protocols that provide for a lengthened proestrus

Dirandeh, E.; Khaninezhad, S.; Ansari Pirsaraei, Zarbakht; Rezaei, Arman; Colazo, M.G.

doi:10.1111/rda.14696

Public

Reproductive outcomes in Holstein heifers synchronized with timed‐AI protocols that provide for a lengthened proestrus

Published in Reproduction in Domestic Animals • Aug 1, 2024

Authors:

E. Dirandeh

S. Khaninezhad

Zarbakht Ansari Pirsaraei

Abstract

This study compared reproductive outcomes among two protocols for synchronization of ovulation that provide for a lengthened proestrus with the conventional oestradiol-based protocol currently used for timed-AI (TAI). Holstein heifers (13-15 months) at one location were assigned randomly to one of t...

Subject

Ovulation

Artificial insemination

Andrology

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