During the Yayoi period around 300 BC, pigs were introduced and raised in ancient Japan, marking a significant development in agricultural practices. This introduction not only diversified the food sources available to early Japanese societies but also played a role in cultural and economic exchanges with neighboring regions. The domestication of pigs contributed to the evolution of Japanese cuisine and agricultural techniques, shaping the dietary habits of future generations.

The role of pigs in early Japanese agriculture around 300 BC influenced poetic references to farming and ritual animals. This agricultural practice became a symbol of prosperity and cultural identity, enriching the thematic depth of early Japanese poetry, particularly in works that celebrate the harmony between nature and human life.