What is the appropriate stocking density for raising pigs?

The stocking density of pigs refers to the pen area occupied by each pig, usually expressed as "sq m/pig". Stocking density indicates how densely the pigs are housed in the barn.

Stocking density has a great influence on the air environment inside the barn. If too many pigs are housed, more heat is released, which helps keep the pig barn warm in winter but is unfavorable for heat protection and cooling in summer; it increases the levels of harmful gases, water vapor, dust and microorganisms in the barn, and also makes fighting among pigs frequent, affecting feed intake and rest. If too few pigs are housed, the total building area of the pig barn increases, raising the civil engineering investment, and it is also unfavorable for keeping the pig barn warm in winter. Therefore, each type of pig group should have an appropriate stocking density.