Fertilization failure, mostly due to absence of sperm in the oviducts, is a major cause of
reproductive inefficiency of farm animals. Sperm may be transported to the oviducts of cattle …

This review considers the use of prostaglandin F2α and its synthetic analogues (PG) for
controlling the estrous cycle of the ewe. Aspects such as phase of the estrus cycle, PG …

The main objective of this study was to investigate the effectiveness of certain progestagen–
gonadotrophin treatments on synchronization of estrus in sheep. In Experiment I, 30 Chios …

Goats are amongst the most fertile of the domestic species. In the temperate zones
seasonality may constitute a limiting factor if intensive production systems are to be …

The role of follistatin as an activin-binding protein has dominated the study of this molecule
for the last 10 years. However, there is emerging evidence that follistatin has a role in …

Two experiments were conducted in ewes in order to develop an oestrus–ovulation short
time synchronization protocol based on combined FGA, PGF2α, GnRH, eCG treatments, for …

Synchronization of ovulation (Ovsynch) is an effective method for controlling time of first and
subsequent AI in lactating dairy cows. However, validation of the original Ovsynch program …

Oestrus was synchronized in ewes by (a) withdrawal of an intravaginal progestagen sponge
after 12 days or (b) injection of PGF-2α on Day 11 of the oestrous cycle. In addition, ewes …

Intrauterine insemination by laparoscopy is required to achieve acceptable lambing rates in
ewes when using frozen semen but the procedure has evoked welfare concerns. Oxytocin …

The journey that spermatozoa take following deposition in the female tract is a long and
perilous one. The barriers they face within the female tract differ depending on whether they …