A domestic pig, also known as a sow, can have a varying number of piglets in one litter, depending on factors such as breed, genetics, and management practices. On average, a domestic pig can give birth to a litter size ranging from 8 to 14 piglets. However, litter sizes can be as small as 1 or 2 piglets or as large as 20 or more in some cases. It's worth noting that the number of piglets in a litter can also be influenced by the age and health of the sow, as well as the quality of the breeding program.
Pigs are known for their relatively large litter sizes compared to many other domesticated animals. This high prolificacy is one of the reasons why pigs are considered efficient in terms of meat production. After giving birth, the sow typically nurses and cares for her piglets, providing them with milk and warmth until they are weaned, which typically occurs around 4 to 6 weeks of age.