On the basis of gross and histologic study of ovaries, it was proposed in 1960 that two waves
of follicular activity occurred during bovine estrous cycles [1]. The two-wave hypothesis was …

In this review, the main features of folliculogenesis are summarized and compared among
species. In the past few years, ultrasonography has clarified follicle growth patterns, and our …

As the standard theriogenology text for veterinary students, Veterinary Reproduction and
Obstetrics is also a great reference to keep post-graduation. The 10th edition of this book …

It is not clear whether the turnover of ovarian follicles during the estrous cycle in cattle is
continuous and independent of the phase of the cycle, or whether waves of follicular growth …

Ovarian follicular development was studied in 13 heifers by daily ultrasound examination
during 2 complete and consecutive natural oestrous cycles. In 21 cycles (81%) 3 dominant …

Follicular growth rates were studied in 5 Hereford-Holstein cross heifers on Day 14 of the
oestrous cycle. The granulosa cell mitotic index (MI) was measured in non-atretic antral …

The paper presents an update of our 1993 model of ovarian follicular development in
ruminants, based on knowledge gained from the past 15 years of research. The model …

Transrectal diagnostic ultrasonography has profoundly enhanced our ability to evaluate the
reproductive organs in cattle. Ultrasonic imaging technology allows non-invasive …

Time of ovulation was determined for Holstein cows (n= 51) for estruses occurring
spontaneously (n= 33) or those induced by PGF2α (n= 86). Ultrasound examination of …

Abstract Multiparous Holstein cows (n= 52) were fed one of six diets consisting of a totally
mixed ration (corn silage, corn grain, soybean meal, dried distillers grains, and whole …