Duroc boars are used as natural servers as a back up to AI, with all selected breeding sows reared at Harnhill.
Uses For the active immunization of sows, gilts, boars and growing pigs as an aid in the control of swine erysipelas.
According to Stanislas Julien a ceremonial ordinance was established in China by the emperor Chin-nung 2800 years B.C., in accordance with which the emperor sows the rice himself while the seeds of four other kinds may be sown by the princes of his family.
Many brood sows are fattened to greatest profit after the second or third litter.
I have 2 sows (female guinea pigs) avalible for sale both from different litters, but live together great at the moment.