Progesterone induced acrosome reaction in stallion spermatozoa is mediated by a plasma membrane progesterone receptor.
Stallion candidates are evaluated at a young age on their own performance by a panel of medical experts and trainers.
One stallion was housed elsewhere on the farm.
The best advice one could offer an individual breeder is to breed only the best mares to the best stallions, where best is defined by objective performance criteria.
There may be a difficulty in finding suitable mares for the stallions without a proper premium.
Rations allowed under the present proposals for stallions and mares kept for breeding are adequate to allow the continuance of breeding.
Excluding horses under four years old, brood mares, and stallions, there are 1,600,000 horses in the country which would be available.
Many of the commercial stud farms send their mares to visit stallions around the country.
