From the AGHA website:
The American Guinea Hog is the ideal sustainable heritage farm pig, rnknown for its moderate size, excellent foraging abilities, friendly rntemperament, excellently flavored meat and indispensable lard. While rnthe American Guinea Hog is smaller than industrial hog breeds, it is a rngood-sized farm pig providing a nice, well-marbled carcass.
Well-conditioned,rn fully adult American Guinea Hogs range from 150 poundsrn to 300 pounds, depending on sex, frame-size, and body condition. rnBecause American Guinea Hogs easily fatten, care should be taken to NOT rnoverfeed, especially with grain. Excess weight will likely lead to rnfertility problems.
The American Guinea Hog is exceptionally calm and friendly making it an rnexcellent choice for small sustainable family farms. They have rnexceptional mothering skills. Females with piglets are easily managed, rnas are adult males. They do well with children and a wide range of farm rnanimals. It should be a goal of breeders to maintain the good temperament of the American Guinea Hog.
While American Guinea Hogs are suited to a wide variety of environments rnand will do better than most breeds on low grade forage, they prefer rnlush pastures with clover along with access to minerals, kitchen scraps,rn quality hay in winter, clean water to drink, access to a muddy wallow, minimal shelter from precipitation and wind, dry bedding, and rnperhaps a small amount of grain. They thrive where ranging and grazing rnis a constant activity giving them plenty of exercise. They are minimal rnrooters when good grazing and adequate feed is available.
At six months, the American Guinea Hog may provide a nicely marbled rncarcass of up to 75 pounds hanging weight of gourmet-quality rnhighly-flavored meat. Fat tends to peel easily from the meat. There is rnno need to castrate young male hogs intended for slaughter at six monthsrn of age.