Ukokkei(White)(Tokyo Strain)

Left: Photo credit, KIKUCHI, Kazuhiro, National Institute of Agrobiological Sciences / Right: Photo credit, Ibaraki Prefectural Poultry Experiment Station

Ukokkei (Silkie) was said to have been introduced from China in early Edo Era, however, original place of Ukokkei is not clear. This breed shows many special morphological features: Black walnut comb with crest, Silky feather, Shank feather, Hind limb with fifth digit, Black colored skin, muscle, visceral organ and bone. Ukokkei is named after its black meat and bone. Ukokkei is known as medicinal chicken for revitalizer in traditional Chinese medicine and also has premium position as an ornamental animal. Ukokkei was registered as one of Natural Monuments of Japan in 1942. Recently, Peoples are raising this breed not only as for an ornamental animal, also for production of the special meat and egg. Females still keep high broodiness.

Tokyo strain was bred in Tokyo Metropolitan Animal Husbandry Experiment Station and shows higher egg production rate than usual Ukokkei population.