Animal husbandry and improving genetics have raised the production bar from fewer than 10 pigs per sow per year in the 1930s to the current level north of 20 to 30 piglets per sow per year.
Source: The Farmer, July 13, 2026. Link. The number of hog farms has diminished while the amount of production on those farms has improved in both quantity and quality.
U.S. pork producers are nearing 12 pigs saved per litter, according to recent USDA numbers, representing a jump in efficiency for hog production.” – National Pork Board
Related: Pigs per litter continues steady growth, November 12, 2024, AHD Archives. Link.
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