Pasture based pig farming continues to grow as small farms look for diverse income and local food markets. Raising pigs outdoors offers fresh air and natural behaviour. It also places a heavy demand on soil.
Healthy soil keeps a pasture productive. Poor soil quickly turns grazing areas into mud and bare ground.
Soil types vary widely across regions across Canada shaped by glacial history. Sandy soils drain quickly and help reduce mud, but these soils often lack nutrients and moisture during dry weather.
Clay soils hold water longer and stay wet after rain, but become compacted easily when pigs are present.
Loam soils usually perform better because they balance drainage with moisture holding ability.
Pig behaviour increases soil pressure. Pigs root with their snouts while searching for feed. Light rooting can add organic matter. Heavy rooting removes plants and exposes soil. Bare soil erodes easily and limits pasture recovery. Rotating pigs between paddocks reduces damage and allows ground cover to return.
Forage choice also protects soil surface. Grasses like orchardgrass, timothy, and perennial ryegrass form strong roots. These grasses reduce erosion and hold soil together.
Legumes such as clover can add nitrogen.
Cover crops and forages need proper rest periods to survive pig traffic. Diverse forage mixes help pastures recover under variable weather.
Drainage and site selection matter greatly. Pigs damage land fastest in wet areas near feeders and shelters. Many farmers use sacrifice areas to protect main paddocks during wet conditions. Moving high use areas limits mud buildup.
Stocking density controls soil stress. Smaller pigs cause less damage. Heavier pigs require more space. Farmers should consider adjusting stocking rates based on weather and pasture cover.
Manure adds nutrients and organic matter to soil. Uneven distribution occurs when pigs stay in one spot. Regular rotation spreads manure evenly and supports forage growth. Soil testing helps will help farmers to track fertility levels.
Healthy soil supports pigs, forage, and farm success. Good management protects pasture productivity year after year.