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Tosa Jidori
土佐地鶏Native breed No.30
Tosa Jidori is one of the 38 native breeds listed in Japan's JAS standard for jidori (No. 30 in Annex A).
- National natural monument
- No individual designation
Brands whose crosses include this breed
- Tosa Jiro — A first-generation cross of the Tosa-jidori — a designated natural monument — with Rhode Island Red females; only hatching eggs produced at the Kochi Livestock Experiment Station may be used
These are the brands whose mating scheme, as given in that brand's source, names this breed. The share of its bloodline is not shown.
In numbers
All brands using Tosa Jidori are in Kochi. One sets a minimum rearing period: 120 days (all chicken brands range from 75 to 150). One caps birds per square metre at 4 (all brands: 2 to 10).
Counts cover only the brands in this guide.
Sources
Sources are in Japanese
- [J001] 地鶏肉の日本農林規格（平成11年農林水産省告示第844号、最終改正 令和7年9月2日） — Ministry of Agriculture, Forestry and Fisheries ・ Primary source ・ Accessed 2026-09-24
- [J002] 地鶏肉の日本農林規格 新旧対照表（令和7年9月2日、JAS 0844:2025 附属書A 在来種） — Ministry of Agriculture, Forestry and Fisheries ・ Primary source ・ Accessed 2026-09-28