The doctor signs an affidavit stating that the account had been paid in full.
There are no details about the type of rifle or the type of pigs. In all seriousness, the court really wasn't interested in the type of rifle or pigs used to pay the bill--just that the bill had been paid.
Common usage of the time would indicate that since the animals were referred to as "pigs" and not "hogs" that they were younger animals, perhaps recently weaned and not fully grown. But that's speculation.
And there's no record of the gun permit or the transfer of ownership--(smirk!).
Sometimes there's interesting details in those estate accountings.
Pig: Image courtesy of Tina Phillips at FreeDigitalPhotos.net.
Pig: Image courtesy of Suat Eman at FreeDigitalPhotos.net