Therapeutically increasing the uterine blood vessel
density of pregnant sows could be the key to producing
more uniform litters of pigs, so adding greatly to production
efficiency.
This is one of the findings of a three-year study, which
has shown that a specialized population of the mother’s
white blood cells increases blood-supplying tubes at healthy
conceptus attachment sites, but stops the production of
molecules for building the blood delivery system at attachment
sites where the pig embryos are dying.