Word: semen
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
Perhaps the most imaginative of all animal researchers is J. Rockefeller Prentice, son of the chicken pioneer. Rockefeller Prentice has brought to commercial perfection the technique of quick freezing (at 320° below zero) the semen of prize beef bulls, flying it anywhere in the U.S.-or the world...
...give stock raisers the benefit of superb sires at low cost, Prentice has a bull donor service. In a pasture, one bull may cover only 20 to 35 cows a year. Prentice divides the semen, thus enables a bull to service up to 20,000 cows. He has one bull that has fathered 118,000 calves. Others long since dead are still siring calves. But he is not stopping there...
...donor cows would be fed hormones to make them super-ovulate. Formidable cost problems must be faced before the experimental process is commercially possible. Another big obstacle may turn out to be the purebred beef cattle associations. They already object to Prentice's selling a service of semen for $5 (plus a $5 vet's fee for injection). The associations say there is a danger slip-ups could blur purebred lines. The real reason, says Prentice, is that cattlemen want to preserve their market for high stud fees...
...father of a child conceived by artificial insemination? The man whose semen was used, decided a tribunal of Italian magistrates last week. But in arguing the case, the presiding judge made the point that artificial insemination was a fact of modern life and should be treated as such, rather than as the sin the Roman Catholic Church says it is. "The magistrate cannot accept the church's totally negative views on artificial insemination," he said. "That is the religious viewpoint, but a lay magistrate must see other viewpoints beside the religious...
...Artificial insemination is bringing down the price and increasing the range of a prize bull's capacities. Instead of servicing only two cows a week, a bull can theoretically father 100,000 calves in its lifetime, and ranchers 1 ,000 miles away can get semen by air within 24 hours and upgrade their herd at a nominal...