Beef and dairy productivity depends directly on the reproductive efficiency and genetic gain
of the herd, which can be related to the appropriate use of biotechnologies, such as timed …

The aim of this review is to compare the performance of different reproductive programs
using natural service, estrus synchronization treatment before natural service (timed natural …

Fixed-time artificial insemination (FTAI) has been widely applied in South America within the
last 20 years for the genetic improvement of commercial beef herds. Most FTAI treatments for …

This study evaluated the efficiency of a rapid reinsemination program allowing timed AI (TAI)
every 21d (ReBreed21) in a commercial beef cow-calf operation. Nelore females from …

Abstract Knowledge of follicular wave dynamics obtained through the use of real-time
ultrasonography and the development of the means by which follicular wave dynamics can …

The present study evaluated follicular and endocrine dynamics during ReBreed21, a
reproductive strategy that allows resynchronization of ovulation every 21 days in Bos indicus …

The aim of the present study was to investigate the effects of a strategy for extending pro-
oestrus (the interval between luteolysis and ovulation) in an oestrus synchronisation …

Semen deposition through the cervix into the uterus is a difficult technique in ewes and
represents the main limiting factor for insemination in this species. The objective of this study …

Up to the 18th century, the prevailing view of reproduction, or 'generation'as it was referred
to, was that organisms develop from miniatures of themselves, termed preformation. The …

As our understanding of ovarian function in cattle has improved, our ability to control it has
also increased. Luteal function in cattle has been studied in detail, and prostaglandin F2α …