Nevertheless, as breeding technicians were celebrating the success of these new breeds, they were sobered by a sudden turn of events. After 16 years of free breeding on the mountain slopes, it was found upon investigation that some pigs had jumped the fences at an unknown time, disappearing without a trace.
然而，就在畜試人員慶賀蘭嶼豬「轉型」成功之際，回頭驀然卻驚覺，16 年來用「放牛吃草、放豬亂跑」方式養在山坡上的保種豬群，經過盤點之後發現，有的不知何時已經跳出柵欄、逃逸無蹤。