Preparation Bradley method Hypnobirthing Lamaze Nesting instinct. Amniocentesis Cardiotocography Chorionic villus sampling Nonstress test Abortion. Prostaglandins are also the compounds responsible for causing the myometrium to contract and expel the menses from the uterus, during menstruation. Therefore, even though lower seminal volumes were observed, the participating stallions may still be sufficiently fertile dependent on the measurements obtained through analysis of additional semen parameters, such as total sperm count and progressively motility, which are considered to be main parameters in semen quality assessment. Lastly, the number of inseminations per cycle may also contribute favorably to increased pregnancy rates, for Squires et al. In modern species conservation, semen collection and artificial insemination is used also in birds.
Sperm concentration significantly influenced semen motility and morphology at arrival of the shipped semen.
Quality and fertility of cooled-shipped stallion semen at the time of insemination.
Archived January 7,at the Wayback Machine. Views Read Edit View history. The difference in semen quality between competing and non-competing stallions, as well as the difference between disciplines suggests endocrinological and physiological changes occur in relation to training intensity and competition. If good records are not kept, the offspring when grown up risk accidental incest. Unlike many other countries, the US does provide regulations for the selection of breeding stallions based on fertility, but instead stands stallions based on their show record.