It all began when Ong-ard Panyachatiraksa, a farm owner in the north of Thailand who is licensed to grow medicinal cannabis, was wondering what to do with the many excess leaves he had amassed. He asked: could his brood of chickens benefit from the leftovers?
Academics at Chiang Mai University were also curious. Since last January they have studied 1,000 chickens at Ong-ard’s Pethlanna organic farm, in Lampang, to see how the animals responded when cannabis was mixed into their feed or water.