The presence of progestogens in the cervical mucus suppresses and arrests sperm penetration. Using the Kremer technique, the effects of in vitro released progesterone, d norgestrel, and cyproterone acetate were studied by ...

Objective of the investigation was to characterize biochemically the cervical mucus collected prior to the artificialinsemination of Holstein heifers comparing spontaneous oestrus with induced oestrus. The concentration ...

Two standardized techniques for in vivo and in vitro clinical evaluation of sperm migration are described. The in vivo test consists of postcoital sperm recovery, from the cervical canal and from the uterine cavity, with ...

The use of intravaginal sponges (IS) to synchronize estrous onset in ewes provokes vaginitis, an increase in the vaginal bacterial load, and growth of bacterial species that are not present during spontaneous estrous ...

Since our previous results suggest that lactoferrin (LF) might have roles in the reproductive process and that its levels might change in the female tract as a response to various factors, the aim of this investigation was ...

Se evaluó durante tres años consecutivos las pérdidas por abortos en un rodeo de cría bovino, libre de brucelosis y tuberculosis, con control de enfermedades venéreas y aplicación de vacunas contra enfermedades reproductivas. ...