Timed-AI after synchronization of ovulation has become one of the most used reproductive
technologies developed during the past 40 years. Various adaptations of this technology are …

Simple Summary Reproductive efficiency is critical for profitability of dairy operations. The
first part of this manuscript discusses the key physiology of dairy cows and how to practically …

Heat stress has consequences on both the physiology and reproductive performance of
cows, but the most dramatic effect for dairy producers is the decrease produced in fertility …

The objective was to evaluate if expression of estrus by dairy cattle altered fertility in timed
artificial insemination (AI; n= 5,430) or timed embryo transfer (ET; n= 2,003) programs that …

Currently, timed artificial insemination (TAI) can be applied routinely in the reproductive
programs on farms. TAI protocols are designed to promote control of both luteal and …

Reproductive efficiency is not optimal in high-producing dairy cows. Although many aspects
of ovarian follicular growth in cows are similar to those observed in heifers, there are …

Contents Equine chorionic gonadotropin (e CG) is a member of the glycoprotein family of
hormones along with LH, FSH and thyroid‐stimulating hormone. In non‐equid species, e CG …

Two experiments were conducted to investigate the effects of equine chorionic gonadotropin
(eCG) at progestin removal and gonadotropin-releasing hormone (GnRH) at timed artificial …

The objective was to evaluate the effect of estrus occurrence (based on removal of tail-head
marks) on ovarian responses and pregnancy per AI (P/AI; 30 d after AI) in suckled Bos …

Contents Over the last several decades, a number of therapies have been developed that
manipulate ovarian follicle growth to improve oocyte quality and conception rates in cattle …